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Frequency Division Multiplexing (FDM) and Time Division Multiplexing (TDM)/FDM and TDM Multiplexing
 
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Visit My BLOG for more Details- www.engineeringmadeeasypro.com This video explains the concepts of Frequency Division Multiplexing (FDM) and Time Division Multiplexing (TDM). Here You will understand what is the difference between Frequency Division Multiplexing (FDM) and Time Division Multiplexing (TDM) i.e (FDM vs TDM). We will also see here what is multiplexing and why the multiplexing used. Applications of multiplexing and types of multiplexing. you will get an idea about how time division multiplexing in computer networks and telecommunication used and how the frequency division multiplexing is used in telecommunication and computer networks. For more details you can visit my BLOG- http://www.engineeringmadeeasypro.com/ This video is created by Lalit Vashishtha, Founder and owner of 'Engineering Made Easy, YouTube Channel. . . Like my Facebook Page https://www.facebook.com/lalitvas/?ref=aymt_homepage_panel Visit My blog for more information https://www.engineeringmadeeasypro.com/ Join my Facebook Group https://www.facebook.com/groups/1865786296998316/ Join me on Google+ https://plus.google.com/collection/ohUqmB Follow me on reddit https://www.reddit.com/r/EngineeringMadeEasy/ PLAYLISTS on diffent Topics (Choose from the Large Collection of Videos) Random Variables and Probability Distribution https://www.youtube.com/playlist?list=PLDp9Jik5WjRtVUYHjx_Q0KohHqqDVKhcX Continuous Wave Modulation (AM, FM and PM) https://www.youtube.com/playlist?list=PLDp9Jik5WjRtjhcs_NJrhydaQ8H5zSWPw Laplace Transform (Basic to Advanced Level) https://www.youtube.com/playlist?list=PLDp9Jik5WjRv1K8TkyD1NtI3CwjjdQOVn Circuit Simulator (Electronic Circuits Animations) https://www.youtube.com/playlist?list=PLDp9Jik5WjRvDBiUXyGxhV4nH-0Y5uF8V Modulation Basics https://www.youtube.com/playlist?list=PLDp9Jik5WjRsXMtMxv80RTi-9Kvvo4Uvu Vectors Basics https://www.youtube.com/playlist?list=PLDp9Jik5WjRtaD_LBF-EzTjc9Yf98E5xh Optical Fibers (Basic to Advanced Level) https://www.youtube.com/playlist?list=PLDp9Jik5WjRuxzZArqomE59SFmhVv5qPO Electronics Fundamentals https://www.youtube.com/playlist?list=PLDp9Jik5WjRu-ntz8lYYI1XxD2RHQhqXH Signals and Systems https://www.youtube.com/playlist?list=PLDp9Jik5WjRswczwmEVUtsfMMJSBwdiqy Communication Systems (Analog and Digital ) https://www.youtube.com/playlist?list=PLDp9Jik5WjRuUyDT6961r8pkelgJMG8fG Pulse Modulation Techniques https://www.youtube.com/playlist?list=PLDp9Jik5WjRvjqQ6ruRFC6hZcxnOsp3BE Digital Modulation Lectures [HD] https://www.youtube.com/playlist?list=PLDp9Jik5WjRs5ismlsqP_Q3JNlWOe-2an GRAPHS (Basics to Advanced) https://www.youtube.com/playlist?list=PLDp9Jik5WjRupAy80mWcbYq-Z-krB1_04 GATE ACADEMY https://www.youtube.com/playlist?list=PLDp9Jik5WjRv7YnOIecOSLE_UG6wS8_zj Solved Numerical Problems in Engineering [HD] https://www.youtube.com/playlist?list=PLDp9Jik5WjRvrQe4a_kr7JLOS_DMREsUq Energy Bands in Solids [HD] https://www.youtube.com/playlist?list=PLDp9Jik5WjRuIS4hbKhxr7e1sueAboaQA
Views: 97083 Engineering Made Easy
MULTIPLEXING||COMMUNICATION SYSTEM||BTECH ||PART36
 
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MULTIPLEXING||COMMUNICATION SYSTEM||BTECH ||PART36
Views: 13267 KS ACADEMY
L-55 Time Division Multiplexing TDM, TDM/PAM in Digital Communication by Engineering Funda
 
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In this video, i have explained Time Division Multiplexing TDM, TDM/PAM by following outlines: 1. Time Division Multiplexing TDM, TDM/PAM 2. Basics of Time Division Multiplexing TDM 3. Block Diagram of Time Division Multiplexing TDM 4. Working of Time Division Multiplexing TDM 5. Waveforms of Time Division Multiplexing TDM 6. Advantages of Time Division Multiplexing TDM For free materials of different engineering subjects use my android application named Engineering Funda with following link: https://play.google.com/store/apps/details?id=com.viaviapp.ENG_Funda Above Android application of Engineering Funda provides following services: 1. Free Materials (GATE exam, Class Notes, Interview questions) 2. Technical Forum 3. Technical discussion 4. Inquiry For more details and inquiry on above topic visit website of Engineering Funda with given link: http://www.engineeringfunda.co.in Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Digital communication. #Engineering Funda, #Communication Engineering, #Digital Communication, #Time Division Multiplexing TDM, #Basics of Time Division Multiplexing TDM, #Block Diagram of Time Division Multiplexing TDM, #Working of Time Division Multiplexing TDM, #Waveforms of Time Division Multiplexing TDM, #Advantages of Time Division Multiplexing TDM, #TDM, #TDM/PAM
Views: 11278 Engineering Funda
Time Division Multiplexing or TDM | Hindi / Urdu | RKTCSu6e12
 
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Time division multiplexing or TDM is used for multiplexing of digital signals. When a large number of signals have to be transmitted over a common channel, multiplexing is required. After watching this video you will be able to- 1. Explain multiplexing of signals. 2. Explain time division multiplexing of digital signals. 3. Explain frame time. 4. Illustrator how commutator is used to as sampler. 5. Write relation between bit duration and frame time. 6. Explain why additional bits are transmitted at the end of each frame. 7. Explain the need of synchronization of commutator and decommutator. At "Learn By Watch" we teach you everything from Electronics Engineering. So, don't forget to subscribe us. Subscription links: YouTube: https://goo.gl/JT9uzi Facebook: http://www.facebook.com/learnywatch Twitter: http://www.twitter.com/learnbywatch Most Popular uploads: https://goo.gl/isq6mo Most Recent uploads: https://goo.gl/U9RL5E We upload Electronics Engineering videos every day at 7:00 PM so don't forget to visit our channel every day at 7:00 PM.
Views: 85604 Learn By Watch
multiplexing techniques
 
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FDM technique
Views: 57826 SHARAYU MAHAJAN
Multiplexing and Demultiplexing  in Urdu and Hindi
 
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__________________________________________________________ Website ----------------------------------------------------------------------------------------------- http://academy-khi.com/ http://salman.academy-khi.com ----------------------------------------------------------------------------------------------- Social Media Links ----------------------------------------------------------------------------------------------- Facebook = https://www.facebook.com/academykhi/ Twitter = https://twitter.com/academy_khi Instagram = https://www.instagram.com/academykhi/ Google+ = https://plus.google.com/+Academykhi2015 ----------------------------------------------------------------------------------------------- About Academy ----------------------------------------------------------------------------------------------- Academy of Technology Academy of Technology is an online resource in Urdu and Hindi languages. The website focuses on providing quality video lectures and notes related to topics. Our aim is to help people by giving them comprehensive information and techniques to improve their knowledge in computer and communication networking. Our focused audience is beginner level but some topics need some background.We are opening doors for everyone to get some knowledge.Our target study areas are Technology. Computer Networks. Telecom Networks. IT Trainings. Basic Sciences Vision To be recognized and respected as one of the best online educational resources. Mission Our mission is to provide best online education in the Urdu language. ____________________________________________________________ About me -------------------------------------------------------------------------------------------------- Hafiz Salman Ahmad MS Computer and Communication Networks ____________________________________________________________ Multiplexing Multiplexing is a technique which allows sending multiple signals over a single data link. In simple words, Sharing of the medium between multiple signals. Topic What is Multiplexing (MUX)? What is Demultiplexing? MUX types. What is FDM Frequency division MUX? What is TDM Time division MUX? What is WDM wavelength division MUX? What is CDM Code division MUX? What is Demultiplexing? It is reverse order of mux. one into many patterns. Multiplexer. It is a device that combines multiple signals into one signal. Demultiplexer. It is a device that separates the multiplexed signal. What is FDM Frequency Division Mux? What is TDM Time division Mux? What is Synchronous TDM? What is Asynchronous TDM? What is WDM Wavelength division mux? What is CDM code division mux?
Views: 65659 Academy-khi
Lecture -7 Transmission of Digital Signal - I
 
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Lecture Series on Data Communication by Prof.A. Pal, Department of Computer Science Engineering,IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 166711 nptelhrd
Multiplexing FDM and TDM
 
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This video describes the concepts of Frequency Division Multiplexing and Time Division Multiplexing.The language used for explanation is a mix of hindi and english.. For downloading the slides kindly visit http://ashutoshrastogi.in/students/third-year-students/poc/
Views: 133396 Ashutosh Rastogi
L-56 Examples on Time Division Multiplexing TDM in Digital Communication by Engineering Funda
 
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In this video, i have explained Examples on Time Division Multiplexing TDM by following outlines: 1. Time Division Multiplexing TDM, TDM/PAM 2. Basics of Time Division Multiplexing TDM 3. Examples on Time Division Multiplexing TDM For free materials of different engineering subjects use my android application named Engineering Funda with following link: https://play.google.com/store/apps/details?id=com.viaviapp.ENG_Funda Above Android application of Engineering Funda provides following services: 1. Free Materials (GATE exam, Class Notes, Interview questions) 2. Technical Forum 3. Technical discussion 4. Inquiry For more details and inquiry on above topic visit website of Engineering Funda with given link: http://www.engineeringfunda.co.in Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Digital communication. #Engineering Funda, #Communication Engineering, #Digital Communication, #Time Division Multiplexing TDM, #Basics of Time Division Multiplexing TDM, #Examples on Time Division Multiplexing TDM, #TDM, #TDM/PAM
Views: 3694 Engineering Funda
Time Division Multiplexing (TDM)
 
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Time Division Multiplexing (TDM) Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
Signal Encoding 1: Digital Signals
 
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Several digital encoding schemes are presented: NRZ-L, NRZI, Bipolar-AMI, Pseudoternary, Manchester, and Differential Manchester
Views: 142170 Jacob Schrum
Electronic Basics #5: How to Multiplex
 
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Twitter: https://twitter.com/GreatScottLab Facebook: https://www.facebook.com/greatscottlab Previous video:http://youtu.be/EnM3p2TmWXc Arduino Code+Schematic: http://www.mediafire.com/download/asi6yba4l8844qx/Electronic_Basics#5_Multiplexing.rar In this video i am going to show you how to control a huge amount of LEDs inside a matrix or a cube with only a few I/O pins of your Arduino. Music: Killing Time, Kevin MacLeod (incompetech.com) You want to support my videos? You can browse and buy tools&materials from my Amazon Store. This way I get a small commission: Amazon.de: http://astore.amazon.de/great043-21 Amazon.com:http://astore.amazon.com/gre09a-20 Amazon.co.uk: http://astore.amazon.co.uk/gre0b-21 Or you feel super generous and want to use this Amazon link as your Amazon home page. And do not worry, your purchases are all anonym and the prices are all the same: Amazon.de:http://www.amazon.de/?_encoding=UTF8&camp=1638&creative=19454&linkCode=ur2&site-redirect=de&tag=great043-21&linkId=ORZEQZEOVJAFURCZ Amazon.com:http://www.amazon.com/?_encoding=UTF8&camp=1789&creative=390957&linkCode=ur2&tag=gre09a-20&linkId=I5NDCEAVCD2OWM4S Amazon.co.uk:http://www.amazon.co.uk/ref=as_li_ss_tl?_encoding=UTF8&camp=1634&creative=19450&linkCode=ur2&tag=gre0b-21
Views: 332082 GreatScott!
L-58 Examples on Time Division Multiplexing TDM in Digital Communication by Engineering Funda
 
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In this video, i have explained Examples on Time Division Multiplexing TDM by following outlines: 1. Time Division Multiplexing TDM, TDM/PAM 2. Basics of Time Division Multiplexing TDM 3. Examples on Time Division Multiplexing TDM For free materials of different engineering subjects use my android application named Engineering Funda with following link: https://play.google.com/store/apps/details?id=com.viaviapp.ENG_Funda Above Android application of Engineering Funda provides following services: 1. Free Materials (GATE exam, Class Notes, Interview questions) 2. Technical Forum 3. Technical discussion 4. Inquiry For more details and inquiry on above topic visit website of Engineering Funda with given link: http://www.engineeringfunda.co.in Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Digital communication. #Engineering Funda, #Communication Engineering, #Digital Communication, #Time Division Multiplexing TDM, #Basics of Time Division Multiplexing TDM, #Examples on Time Division Multiplexing TDM, #TDM, #TDM/PAM
Views: 1148 Engineering Funda
DS1 (T1) Fundamentals
 
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This presentation gives a quick overview of the fundamental concepts necessary to understand DS1 (a.k.a T1) interface technology, framing, signaling and general concepts. DS1 is a widely used telecommunications standard in North America and Japan (J1) to transmit voice and data between central offices and PBXs.
Views: 12207 VeEX Inc.
How Analogue-Digital Conversion & Multiplexing Works - Old A-level Physics Video
 
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An old but great video about how multiplexing work. Short and concise. No copyright infringement intended. This has been uploaded for educational purposes only
Views: 7669 Capra Physics
OFDM - Orthogonal Frequency Division Multiplexing
 
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Today I will talk about variation of FDM: Orthogonal Frequency Division Multiplexing, or OFDM. OFDM is being used for many of the latest wireless and telecommunications standards, such as Wi-Fi 802.11ac, both 4G LTE and 5G cellular technologies, WiMAX, and many more. It is a very popular multiplexing technology. So what is big deal of the OFDM? Why does it have many advantages over FDM? My topics are organized by playlists: https://www.youtube.com/user/sunnylearning/playlists My most popular videos: https://www.youtube.com/user/sunnylearning/videos?sort=p&view=0&flow=grid Wireless and Wi-Fi https://www.youtube.com/watch?v=PcbTMSf0D2M&list=PLSNNzog5eydvJG48PYnWnNY7-tQIfxTRb This is my education channel. My topics cover networking, security, programming, data structure, algorithm, programming and other computer-related materials. Please leave comments, questions and subscribe! Thank you very much! Sunny Classroom
Views: 22253 Sunny Classroom
Frequency division multiplexing (fdm) in hindi.
 
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Frequency Division Multiplexing (FDM) is a networking technique in which multiple data signals are combined for simultaneous transmission via a shared communication medium. FDM uses a carrier signal at a discrete frequency for each data stream and then combines many modulated signals. NOTES http://electronicnotes4u.blogspot.in/2018/03/frequency-division-multiplexing-fdm.html TIME DIVISION MULTIPLEXING ;https://www.youtube.com/watch?v=21VOTzZs9tk&ab_channel=dddecker Please like and subscribe . https://www.youtube.com/channel/UCoso4R5bT6RVGtyJ6Rs93NQ?sub_confirmation=1 Thank u for watching .
Views: 12755 Get Set Electronics
ASK FSK PSK Modulation/Digital Modulation Techniques/Amplitude, Frequency and Phase Shift Keying
 
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For More Details Visit My BLOG - https://www.engineeringmadeeasypro.com/ This Video discusses Digital Modulation Techniques (ASK, FSK and PSK). The Waveforms, Definition and Basic Concepts of each digital modulation Techniques are discussed here. This Video also explains the basic difference between digital modulation and analog modulation. The digital modulation techniques are amplitude shift keying (ASK), frequency shift keying (FSK) and Phase shift keying (PSK). First of all let's understand, what is modulation? Modulation is a process, where some characteristic of the carrier wave (amplitude, frequency or phase) is varied in accordance with the instantaneous value of the modulating (message or baseband) signal. So if amplitude of the carrier wave is varied, then it is called as amplitude modulation, but if frequency or phase of the carrier wave is varied, according to the instantaneous value of the modulating signal, then it is known as frequency modulation or phase modulation respectively. So now let's Understand the basic difference between continuous wave modulation and digital modulation- Difference between Continuous Wave Modulation and Digital Modulation- Amplitude Modulation (AM), Frequency Modulation (FM) and Phase Modulation (PM) are the examples of Continuous Wave (CW) modulation, while Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK) and Phase Shift Keying (PSK) are examples of Digital Modulation Techniques. The basic difference between continuous wave Modulation and digital modulation techniques is based on the nature of message signal (modulating signal). In continuous wave modulation, the message signal is of analog nature but in digital modulation, the message signal is of digital nature (Binary or M-ary encoded version). In both of these modulation techniques, the carrier wave is of analog form. Here it is interesting to note that, the three forms of digital modulation techniques that is ASK, FSK and PSK are analogous to AM, FM and PM of continuous wave modulation respectively. So now let's discuss each digital modulation technique (ASK, FSK and PSK) in detail- Amplitude shift keying (ASK) In ASK, the amplitude of the carrier wave is changed (switched) according to the digital input signal (modulating signal). Therefore amplitude shift keying is analogous to Amplitude Modulation (analog modulation). ASK is analogous to AM, because in Amplitude Modulation (AM), amplitude of the carrier wave is changed according to the instantaneous value of the modulating (message) signal, in the same way in ASK also, the amplitude of the carrier wave is switched (varied) according to the instantaneous value of the modulating signal (digital input signal). The difference is only of the nature of the modulating signal. In amplitude modulation, the modulating signal is of analog kind but in digital modulation, it is a stream of digital bits. the amplitude of the sinusoidal carrier wave is switched, as per the digital input signal. The carrier wave is either not transmitted or transmitted for digital input signal '0' or '1' respectively. That is why amplitude shift keying (ASK) is also called as "ON - OFF Keying (OOK)". Now we will discuss the Frequency Shift Keying (FSK) Frequency Shift Keying (FSK) If the frequency of sinusoidal carrier wave is varied (switched) as per the digital input signal, then it is known as the frequency shift keying (FSK). It is analogous to frequency modulation (analog modulation). The reason behind why FSK is analogous to FM, is.... In Frequency Modulation (FM), the frequency of the carrier wave is varied according to the instantaneous value of the modulating signal, in the same way in frequency shift keying also, the frequency of the sinusoidal carrier wave is varied (switched) as per the digital input signal. The difference is only of the nature of the modulating signal. In FM the modulating signal is of analogue nature while in FSK modulating signal is digital. So here the basic purpose of Frequency Shift Keying (FSK), is to modulate (change/switch) the frequency of the carrier wave, according to the digital input signal. So in Frequency Shift Keying (FSK), we have two types of frequencies of the carrier wave, low frequency for the transmission of '0' and high frequency for the transmission of '1'. In this way, in Frequency Shift Keying (FSK), the information of the digital input signal is present in the frequency variations of the carrier wave. That is why it is known as frequency shift keying. Now let's discuss the Phase Shift Keying (PSK) Phase Shift Keying (PSK) In phase shift keying, phase of the carrier wave (analog) is varied as per the digital input signal. Phase shift keying is analogous to Phase Modulation (analogue phase modulation). The phase shift keying is very much similar to Phase Modulation (PM), because in both of these modulation techniques #Modulation #modulationTechniques
Views: 86780 Engineering Made Easy
What is MULTIPLEXING? What does MULTIPLEXING mean? MULTIPLEXING meaning, definition & explanation
 
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✪✪✪✪✪ WORK FROM HOME! Looking for WORKERS for simple Internet data entry JOBS. $15-20 per hour. SIGN UP here - http://jobs.theaudiopedia.com ✪✪✪✪✪ ✪✪✪✪✪ The Audiopedia Android application, INSTALL NOW - https://play.google.com/store/apps/details?id=com.wTheAudiopedia_8069473 ✪✪✪✪✪ What is MULTIPLEXING? What does MULTIPLEXING mean? MULTIPLEXING meaning - MULTIPLEXING pronunciation - MULTIPLEXING definition - MULTIPLEXING explanation - How to pronounce MULTIPLEXING? Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In telecommunications and computer networks, multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium. The aim is to share an expensive resource. For example, in telecommunications, several telephone calls may be carried using one wire. Multiplexing originated in telegraphy in the 1870s, and is now widely applied in communications. In telephony, George Owen Squier is credited with the development of telephone carrier multiplexing in 1910. The multiplexed signal is transmitted over a communication channel, such as a cable. The multiplexing divides the capacity of the communication channel into several logical channels, one for each message signal or data stream to be transferred. A reverse process, known as demultiplexing, extracts the original channels on the receiver end. A device that performs the multiplexing is called a multiplexer (MUX), and a device that performs the reverse process is called a demultiplexer (DEMUX or DMX). Inverse multiplexing (IMUX) has the opposite aim as multiplexing, namely to break one data stream into several streams, transfer them simultaneously over several communication channels, and recreate the original data stream.
Views: 8866 The Audiopedia
Lec 50: T1 Digital Carrier Systems (TDM Hierarchy) [In Hindi]
 
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Hi guys in this Lecture PCM- T1 Digital Carrier Systems (TDM Hierarchy) are explained along with it's significance. If you like it don't forget to subscribe my channel also like it and share it with your colleagues. Thanking You. Knowledge in Depth : https://youtube.com/c/KnowledgeinDepth Principles of Communication/Analog & Digital Communication : https://www.youtube.com/playlist?list=PLHDdxli24zbgc8blbggBb4L2mBBPeDFg5 Digital Communication : https://www.youtube.com/playlist?list=PLHDdxli24zbjmNqk6AQj9wgat5o_dshSI Digital Logic Design : https://www.youtube.com/playlist?list=PLHDdxli24zbhueUQvDAx1HOdYRJ7WCZfp&disable_polymer=true Tutorials on POC/ADC : https://www.youtube.com/playlist?list=PLHDdxli24zbgeumbzLMNU83B5tRPFvBzh Digital Signal Processing : https://www.youtube.com/playlist?list=PLHDdxli24zbhaoZ17oHf8X0dPF98ZPIK_ GATE EC Previous Years Papers : https://www.youtube.com/playlist?list=PLHDdxli24zbhJlAq9eQ31Pu2_qAx1Iry6&disable_polymer=true Engineering Maths : https://www.youtube.com/playlist?list=PLHDdxli24zbhauJ6JpzJ6soo6mCrYL1C- My Website: http://knowledgeindepth.com Blogs Website: http://blogs.knowledgeindepth.com Online School : https://www.youtube.com/c/OnlineSchoolbyasha Amazon deal : https://amzn.to/2kQIwXA #T1DigitalCarrier #TDMHierarchy #DigitalMultiplexing #DigitalCommunication #AdvancedCommunicationSystems #CommunicationEngineering #ADC #POC #PrinciplesofCommunication #Analog&DigitalCommunication
Views: 10203 Knowledge in Depth
Ep.54 Analog Input Multiplexing with the 74HC4051 - 8 Sensors on 1 Pin
 
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Contribute: Patreon: https://www.patreon.com/EE_Enthusiast Analog Input Multiplexing with the 74HC4051 In this simple walkthrough, I explore a simple yet very useful IC which is the 74HC4051 Analog Mux. This IC allows you to take readings from multiple analog sources and channel them through the same pin by using the selector switches. The bottom line is that you can read up to 8 different channels on a single Arduino pin thus optimizing your hardware. Relevant Tutorials: 2. Analog Inputs: https://youtu.be/u_2SLqrKWLM Goals: - To build the hardware which is capable to channel 8 analog inputs into one Arduino pin. - To "sweep" through the 8 signals and store their readings in the Arduino memory. - To monitor the array and verify the functionality of the 8 inputs. Hardware Required (See detailed list on EEEnthusiast.com): - 74HC4051 (or any other Analog MUX) - Potentiometer - Pull-up resistors (10k ohm) - Push Button - Arduino - Jumper Cables Software: - https://github.com/VRomanov89/AnalogMultiplexing - Will be covered in detail on EEEnthusiast.com shortly. Get in touch: Facebook: https://www.facebook.com/EEEnthusiast Twitter: https://twitter.com/EE_Enthusiast Website: http://eeenthusiast.com GitHub: https://github.com/VRomanov89 Store: http://staticjolt.com Personal website: http://vladromanov.com
Views: 63171 EEEnthusiast
Lecture - 11a Multiplexing
 
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Lecture Series on Data Communication by Prof.A. Pal, Department of Computer Science Engineering,IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 74029 nptelhrd
Frequency Division Multiplexing (FDM)
 
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Frequency Division Multiplexing (FDM) Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
Modulation Techniques
 
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This EzEd Video explains - Modulation Techniques - Types of Modulation - Analog Modulation - Digital Modulation -Analog Modulation - Amplitude Modulation - Frequency Modulation - Phase Modulation
Views: 100190 EzEd Channel
Time Division Multiplexing Intro Part 1 of 4
 
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An introduction to Time Division Multiplexing as applied to "T" and "E" type digital PCM carrier systems. Extracted and modified from the "Extra Stuff" folder included on the KidsTricity-2 Student CD.
Views: 57581 noessllc
Frequency Divison Multiplexing
 
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Frequency Division Multiplexing (FDM) is primarily used with analogue signals rather than digital data streams. It works by dividing the entire bandwidth which is available in a data source, into sub-channels that each have a different frequency; hence the name ‘frequency division’. Each sub-channel then carries separate signals through a transmission line or an aggregated channel (a combination of channels with higher bandwidth). The sub-channels can travel independently through a transmission line or they can travel simultaneously besides one another. These two travelling types represent two types of transmissions that we use every day. When you listen to your radio, either through amplitude modulation (AM) or frequency modulation (FM), the multiplexer generates a single station that you can tune into. We are able to decide to listen to just one station because each individual data stream that is being transmitted is regulated by a provider. If this wasn’t happening, we would hear unwanted static interference as the signals would overlap. This is very much the same with television broadcasting, and the same process allows us to separate the data in to channels. FDM is normally transmitted through coaxial cable, optical fiber or using a radio transmitter. Read more at http://www.carritech.com/news/understanding-multiplexing-telecommunications/
Views: 1631 Carritech
How to: Code Division Multiplexing
 
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Watch me fumble over my words for 10 minutes as I struggle to explain a concept I barely grasp myself in a desperate attempt to not fail my first year. CSIT127 Networks and Communications.
Views: 687 ZamBz
What Is Multiplexing? What is FDM And What Is TDM? Use Of Multiplexing,Introduction Of Demultiplexer
 
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What Is Multiplexing? What is FDM And What Is TDM? Use Of Multiplexing,Introduction Of Demultiplexer. . for more future videos Plz do subscribe our channel . Follow our FB page https://www.facebook.com/ReviewMasterVikrant . Follow us On Twitter - https://twitter.com/RMVikrant . My Novel, Shop On Amazon - http://amzn.to/2k5iwoJ . If You like hindi poetry please like our FB poetry page https://ww.facebook.com/Shabd.Alfaaz Friends Thanks for watching my videos. My channel is inspired by technical guruji, sharmaji technical, gadget to use and lots of other channel who are making videos in Hindi and spreading knowledge to our local people. Please leave a comment about the channel and give suggestions to make channel REVIEW MASTER a leading channel. . About Me and The Channel - https://youtu.be/rm5TWpPhlfA . for How To Stream LIVE On YouTube Through Android App. How To Stream LIVE On YouTube Through Smart Phone. How To Stream LIVE On YouTube Through Any Android Device. How To Stream LIVE On YouTube Through Mobile Phone. https://youtu.be/YQ_w2BFgiOk . for how to hack any android phone , Please watch this video https://youtu.be/CiAN5keqpcU . how to Download Lastest Movies Absolutely Free https://youtu.be/3aAVR7vGAcs .
Views: 35328 REVIEW Master Vikrant
Wireless Technology | Tutorial #10 | Orthogonal Frequency Division Multiplexing
 
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Orthogonal frequency-division multiplexing (OFDM) is a method of digital signal modulation in which a single data stream is split across several separate narrowband channels at different frequencies to reduce interference and crosstalk. #RanjiRaj #WirelessTechnology #OFDM Follow me on Instagram 👉 https://www.instagram.com/reng_army/ Visit my Profile 👉 https://www.linkedin.com/in/reng99/
Views: 2400 Ranji Raj
Statistical Time Division Multiplexing
 
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Statistical Time Division Multiplexing Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
Lecture - 8 Transmission of Digital Signal - II
 
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Lecture Series on Data Communication by Prof.A. Pal, Department of Computer Science Engineering,IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 46070 nptelhrd
Analog Multiplexers
 
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Learn about using analog multiplexers for adding more analog inputs to your microcontroller project.
Views: 2796 Shiftedphase
Arduino MIDI Controller: Part 3 - Multiplexers
 
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Part 3 of the Arduino Midi Controller project. This time we add more inputs with the help of Multiplexers. Visit Notes and Volts for full Parts List and Software Download http://www.notesandvolts.com/2016/07/arduino-midi-controller-multiplexers.html Like my videos? Please consider supporting Notes and Volts on Patreon https://www.patreon.com/notesandvolts
Views: 66617 Notes and Volts
21. Multiplexing
 
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For More Video lectures from IIT Professors .......visit www.satishkashyap.com "DIGITAL COMMUNICATIONS" by Prof. S. Chakrabarti, IIT KGP 1. Syllabus and Overview 2. EM Spectrum and Narrowband Signals 3. Introduction to Digital Communication Systems 4. Introduction to Information Theoretic Approach 5. Introduction to Information Theoretic Approach & Discrete Probability 6. Discrete Probability 7. Measure of Information 8. Average Mutual Information & Entropy 9. Huffman coding 10. Huffman coding & Error Control Coding 11. Error Control Coding & Hamming Code 12. Quantization & PCM 13. PCM (Cont.) 14. Uniform Quantization 15. Non Uniform Quantization 16. Non Uniform Quantization (Cont..) 17. DPCM 18. DPCM (Cont..) 19. Data Modulation 20. Data Modulation (Cont..) 21. Multiplexing 22. Multiplexing (Cont..) 23. Multiplexing Cont.. & Signal Design 24. Gram Schmidt Orthogonalization 25. GramSchmidt Orthogonalization (Cont..) 26. Signal Space & Maximum Likelihood Detection 27. Signal Space & Maximum Likelihood Detection (Cont..) 28. Signal Space & Maximum Likelihood Detection (Cont..) 29. Digital Modulation 30. Digital Modulation (Cont..) 31. Digital Modulation (Cont..) 32. Digital Modulation (Cont..) 33. Digital Modulation (Cont..) 34. Response Of Bank Of Correlators 35. Error Performance of QPSK 36. Error Performance of BFSK & M-ARY PSK 37. Power Spectra 38. Matched Filter Receiver 39. Carrier & Timing Recovery; Non Coherent DeModulation
Views: 7113 kashyap B
4 : 1 Multiplexer Combinational Logic Circuit | Boolean Algebra & Logic Gates
 
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In electronics, a multiplexer (or mux) is a device that selects one of several analog or digital input signals and forwards the selected input into a single line. A multiplexer of 2n inputs has n select lines, which are used to select which input line to send to the output. In this Video tutorial we will study about the 4:1 MUX circuit diagram and study its truth table, working & circuit diagram. Mux essesntial perform parallel IN - Serial OUT operations. Boolean Algebra & logic Gates Full Playlist : https://www.youtube.com/playlist?list=PLIY8eNdw5tW-yJHsxApeilNjX2Dkll-Ox Simple Snippets Official Website - https://simplesnippets.tech/ Simple Snippets on Facebook- https://www.facebook.com/simplesnippets/ Simple Snippets on Instagram- https://www.instagram.com/simplesnipp... Simple Snippets Google Plus Page- https://plus.google.com/+SimpleSnippets Simple Snippets email ID- [email protected] For Classroom Coaching in Mumbai for Programming & other IT/CS Subjects Checkout UpSkill Infotech - https://upskill.tech/ UpSkill is an Ed-Tech Company / Coaching Centre for Information Technology / Computer Science oriented courses and offer coacing for various Degree courses like BSc.IT, BSc.CS, BCA, MSc.IT, MSc.CS, MCA etc. Contact via email /call / FB /Whatsapp for more info email - [email protected] We also Provide Certification courses like - Android Development Web Development Java Developer Course .NET Developer Course Check us out on Social media platforms like Facebook, Instagram, Google etc Facebook page - https://www.facebook.com/upskillinfotech/ Insta page - https://www.instagram.com/upskill_infotech/ Google Maps - https://goo.gl/maps/vjNtZazLzW82
Views: 20649 Simple Snippets
Frequency Division Multiplexing | Hindi/ Urdu | Communication System by Raj Kumar Thenua
 
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After watching this video you will be able to: 1. Define Frequency Division Multiplexing (FDM). 2. Explain concept of FDM with the help of real life examples. 3. Explain effective utilization of Communication Channel. 4. Compare conceptually FDM and TDM. 5. Explain effect of different carrier frequencies in FDM. 6. Explain the importance of Guard bands in FDM system. What is FDM? In FDM continuous wave modulation is used to translate each message signal to reside in a specific frequency slat inside the passband of the channel by assigning it a distinct carrier frequency. This video will help you to understand the construction of FDM, block diagram of FDM, use of FDM. Communication is a process of transmission of information from source to destination or from transmitter to receiver. More Communication system videos: http://www.learnbywatch.com/learn/communication-systems/ Join online course:http://www.learnbywatch.in/course/communication-systems-by-raj-kumar-thenua-hindi/ Subscription links: YouTube: https://goo.gl/KtpRMV Facebook: http://www.facebook.com/learnywatch Twitter: http://www.twitter.com/learnbywatch We upload Communication system videos every day at 7:00 PM so don't forget to visit our channel every day at 7:00 PM.
8:1 multiplexer
 
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8:1 MUX || data selector Multiplexers in hindi Raul s tutorialmux analog multiplexer multiplexers digital multiplexer demultiplexer multiplexer ic multiplexer circuit multiplexer chip analogue multiplexer signal multiplexer analog multiplexer ic multiplexer analog multiplexer demultiplexer mux switch ic multiplexer 4 channel multiplexer 4 to 1 multiplexer mux multiplexer 8 to 1 multiplexer serial multiplexer 4 1 multiplexer 8 1 multiplexer multiplex switch multiplexer switch usb multiplexer digital mux demultiplexer ic mux and demux optical multiplexer 16 to 1 multiplexer fiber multiplexer 4 1 mux analog signal multiplexer analog demultiplexer 2 1 multiplexer electronic multiplexers analog switch analog mux ic 2 to 1 multiplexer mux ic multiplexer and demultiplexer 16 channel multiplexer video multiplexer 2 1 mux multiplexer mux high voltage multiplexer multiplexer logic analog switch multiplexer analog multiplexer circuit multiplexer design digital multiplexer ic switch multiplexer voltage reference 8 1 mux ethernet multiplexer data multiplexer analog multiplexer demultiplexer i2c analog multiplexer 8 input multiplexer 16 input multiplexer 16 channel digital multiplexer 8 to 1 mux 2 input multiplexer 16 channel analog multiplexer 16 bit multiplexer multiplexer 4 to 1 multiplexer 8 to 1 4 input multiplexer i2c multiplexer high speed multiplexer multiplexer 16 to 1 multiplexer 2 to 1 logic multiplexer add drop multiplexer differential multiplexer 2 bit multiplexer quad multiplexer staco energy nmea multiplexer 16 multiplexer mux chip analog multiplexing multiplexer applications digital logic multiplexer multiplexer digital 16 to 1 mux multiplexer digital logic multiplexer in digital electronics multiplexer in dld cctv multiplexer mux 4 to 1 cmos multiplexer power multiplexer ic power multiplexer analog switches and multiplexers 16 to 4 multiplexer multiplexer and demultiplexer in digital electronics 4 to 16 multiplexer adc multiplexer 4 way multiplexer
Views: 164300 RAUL S
Quadrature Amplitude Modulation (QAM)/QAM Modulation/QAM Transmitter and Receiver/Block Diagram [HD]
 
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For More Details Visit My BLOG - https://www.engineeringmadeeasypro.com/ This video is about Quadrature Amplitude Modulation (QAM). Quadrature Amplitude Modulation (QAM) Transmitter and Receiver have been discussed here. You will get here the basic concept of QAM modulation and why it is called as Quadrature Amplitude Modulation. Block Diagrams of QAM transmitter and Receivers are also explained here. Quadrature Amplitude Modulation (QAM) is also called as bandwidth conservation scheme. In Quadrature Amplitude Modulation two carries are used in quadrature (phase shift of 90 degrees). QAM is a combination of AM and PM in analog case and ASK and PSK in digital case. Introduction of Quadrature Amplitude Modulation (QAM) Quadrature Amplitude Modulation (QAM) can be used, either with analog signals or digital signals. If the message signal is analog in nature, then we use it with Amplitude Modulation (AM) but when the message signal is in digital form, then Amplitude Shift Keying (ASK) is used. Using QAM, it is possible to transmit two analog message signals or two digital bit sequences by modulating carrier wave's amplitude using analog modulation technique (AM) or digital modulation technique. This modulation scheme is also known as 'Quadrature Carrier Multiplexing'. Now we will understand, what is the meaning of 'Quadrature' in Quadrature Amplitude Modulation (QAM). Actually in quadrature amplitude modulation, the two carrier waves are used, that are out of phase by 90 degrees. Therefore this scheme is known as quadrature amplitude modulation, and these carriers are known as Quadrature Carriers. These modulated waves are summed at the output of the transmitter, therefore the final waveform is the combination of both PSK and ASK in digital case or PM and AM for analogue case. Now we will understand this concept with the help of block diagrams of QAM Transmitter and QAM receiver. In this image, you can see that here we are transmitting two message signals of analog nature x1(t) and x2(t). Observe that it contains two product modulators. The inputs to the first product modulator is, message signal x1(t) and the carrier wave, while the inputs to the second product modulator are analogue message signal x2(t) and the carrier wave with a phase shift of 90 degrees. Here we have used a 90 degree phase shifter for phase shifting. Mathematical Representation of Multiplexed Signal s(t) Because we know, when the product modulator is supplied with a message signal and the carrier wave, then we get amplitude modulated wave in the output. So you can observe here that, quadrature amplitude modulation (QAM) is the combination of both Amplitude Modulation and phase modulation (As phase change of carrier wave takes place here). This was the case for analog modulation, but if we talk about QAM with digital modulation, then, at the place of analog message signal, we use digital messages. In this case it would be a combination of Amplitude Shift Keying (ASK) and Phase Shift Keying (PSK). Now see the Output of the QAM transmitter. Here the outputs of two product modulators are added and the resultant output is the multiplexed signal S(t). So this QAM scheme enables two modulated signals to occupy the same transmission channel and allows the separation of these two message signals at the receiver output therefore it is also known as 'Bandwidth Conservation Scheme'. With this scheme we are simultaneously transmitting two amplitude modulated waves (in case of analog modulation) or two amplitude shift keying signals (in case of digital modulation). Therefore this allows us to use the same transmission channel. And at the receiving end we can easily detect these message signals. Now it's time to discuss the block diagram of QAM receiver. As you can see here, block diagram contains 5 components... Two product modulators, one 90 degree phase shifter, and two low pass filters. Multiplexed signal S(t), which is output of the QAM transmitter, acts as the input to the QAM receiver. This multiplexed signal is applied to the inputs of both the product modulators. For the First product modulator therefore two inputs are- Multiplexed signal s(t) and the carrier wave while the inputs to the second product modulator are- multiplexed signal s(t) and the carrier wave with 90 degree phase shift. Now the outputs of these product modulators are passed through the Low Pass Filters (LPF) as depicted in the image. So at the outputs of these are low pass filters, we get the message signals. The oscillators used to produce carrier waves at the transmitting and receiving ends must be in coherence i.e. the carriers at the transmitting and receiving ends must be in same phase. In this way we get back the modulating signals x1(t) and x2(t)(message signals) at the receiving end. For more details you can visit my BLOG- http://www.engineeringmadeeasypro.com/
Views: 21564 Engineering Made Easy
FDM, TDM, CDM multiplexer in Hindi ⏰
 
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FDMA, TDMA, CDMA,Multiplexer
Views: 40617 All in one
Channelization – FDMA, TDMA and CDMA with Examples(Hindi, English)
 
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Channelization – FDMA, TDMA and CDMA with Examples(Hindi, English) Data Communication and Networking Lectures in Hindi Frequency Division Multiplexing Access(FDMA), Time Division Multiplexing Access(TDMA) and Code Division Multiplexing Access(CDMA)
Views: 104081 Easy Engineering Classes
Synchronous Time Division Multiplexing
 
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Synchronous Time Division Multiplexing Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Arnab Chakraborty, Tutorials Point India Private Limited
Demultiplexer |  very easy
 
07:51
Demultiplexer || explanation || simple || short || easy Demultiplexer || explanation || simple || short || easyW Raul s tutorialimplementation of Boolean function using multiplexer 8:1 MUX || data selectorDemultiplexer || explanation || simple || short || easy Multiplexers in hindi Raul s tutorialmux analog multiplexer multiplexers digital multiplexer demultiplexer multiplexer ic multiplexer circuit multiplexer chip analogue multiplexer signal multiplexer analog multiplexer ic multiplexer analog multiplexer demultiplexer mux switch ic multiplexer 4 channel multiplexer 4 to 1 multiplexer mux multiplexer 8 to 1 multiplexer serial multiplexer 4 1 multiplexer 8 1 multiplexer multiplex switch multiplexer switch usb multiplexer digital mux demultiplexer ic mux and demux optical multiplexer 16 to 1 multiplexer fiber multiplexer 4 1 mux analog signal multiplexer analog demultiplexer 2 1 multiplexer electronic multiplexers analog switch analog mux ic 2 to 1 multiplexer mux ic multiplexer and demultiplexer 16 channel multiplexer video multiplexer 2 1 mux multiplexer mux high voltage multiplexer multiplexer logic analog switch multiplexer analog multiplexer circuit multiplexer design digital multiplexer ic switch multiplexer voltage reference 8 1 mux ethernet multiplexer data multiplexer analog multiplexer demultiplexer i2c analog multiplexer 8 input multiplexer 16 input multiplexer 16 channel digital multiplexer 8 to 1 mux 2 input multiplexer 16 channel analog multiplexer 16 bit multiplexer multiplexer 4 to 1 multiplexer 8 to 1 4 input multiplexer i2c multiplexer high speed multiplexer multiplexer 16 to 1 multiplexer 2 to 1 logic multiplexer add drop multiplexer differential multiplexer 2 bit multiplexer quad multiplexer staco energy nmea multiplexer 16 multiplexer mux chip analog multiplexing multiplexer applications digital logic multiplexer multiplexer digital 16 to 1 mux multiplexer digital logic multiplexer in digital electronics multiplexer in dld cctv multiplexer mux 4 to 1 cmos multiplexer power multiplexer ic power multiplexer analog switches and multiplexers 16 to 4 multiplexer multiplexer and demultiplexer in digital electronics 4 to 16 multiplexer adc multiplexer 4 way multiplexer Raul s tutorial
Views: 123641 RAUL S
Advantages and Disadvantages of Digital Communication System [HD]
 
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Visit My BLOG for more Details- www.engineeringmadeeasypro.com Here you will know, why digital communication is preferred to analog communication. We will also discuss Disadvantages along with advantages of digital communication. We know, that the electronic communication can either be analog or digital. Today’s world is going digital, so it is really important to understand, the advantages of digital communication, that are responsible for the digitalization everywhere. So here in this post, we will see, why digital communication is preferred over analog communication? But there are also some disadvantages associated with the digital communication. These disadvantages will also be discussed here. So first let's start with the advantages of digital communication. Advantages of digital communication # Digital communication systems are simpler and cheaper in implementation as compared to analog communication systems. It has become possible due to advancements in Integrated Circuits (IC) technology. These ICs are very small in size, reliable and cost-effective. Such ICs are used in digital communication, # In digital communication, it is possible to use multiplexing to merge speech, video and other forms of data for transmission over a common channel. The multiplexing is of various types like Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM) or Code Division Multiplexing (CDM). I don’t want to deviate from the current topic, so I will discuss the multiplexing in separate post. # High level of privacy can be obtained in digital communication using data encryption technique. This privacy provides the facility to allow the transmitted signals, to be received only by the permitted receivers. This feature is of great importance in military applications. # In digital communication channel encoding is used. Because of this encoding, there is less accumulation of noise from repeater to repeater, in case of long-distance communication. Apart from this, the digital signals tend to be less affected by noise as compared to analog signals. # It is possible to perform lots of operations on digital signals, like Digital Signal Processing (DSP), data compression, image processing etc. # It is easy to detect and correct errors in digital communication. This easy detection and correction of errors is possible due to the use of channel coding in digital communication. So these were the advantages of using digital communication. These benefits encourage the use of digital communication in place of analog communication. Now we will discuss some disadvantages that are associated with the digital communication. Disadvantages of digital communication # More transmission bandwidth is required in digital communication as compared to analog communication. This is due to the increase in the data rate when analog signal is converted into digital signal. # In digital communication, in case of synchronous modulation, synchronization is required. # Due to various stages used in conversion, high power consumption is another drawback of digital communication. # Sampling error is introduced in the sampling of signal. # Circuits that are used in digital communication are comparatively more complex and sophisticated. So this was the discussion about both advantages and disadvantages of digital communication but it’s worth mentioning that the advantages of using digital communication are more in comparison to disadvantages. Therefore digital communication is replacing analog communication nowadays. This video is created by Lalit Vashishtha, Founder and owner of 'Engineering Made Easy, YouTube Channel.
Views: 18866 Engineering Made Easy
(TDM) Time division multiplexing & demultiplexing
 
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Video created by faculty of SRM University.
Views: 9557 anand soni
8:1 multiplexer using 4:1 and 2:1 Multiplexers | very easy
 
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8:1 multiplexer using 4:1 and 2:1 Multiplexers implementation of Boolean function using multiplexer 8:1 MUX || data selector Multiplexers in hindi Raul s tutorialmux analog multiplexer multiplexers digital multiplexer demultiplexer multiplexer ic multiplexer circuit multiplexer chip analogue multiplexer signal multiplexer analog multiplexer ic multiplexer analog multiplexer demultiplexer mux switch ic multiplexer 4 channel multiplexer 4 to 1 multiplexer mux multiplexer 8 to 1 multiplexer serial multiplexer 4 1 multiplexer 8 1 multiplexer multiplex switch multiplexer switch usb multiplexer digital mux demultiplexer ic mux and demux optical multiplexer 16 to 1 multiplexer fiber multiplexer 4 1 mux analog signal multiplexer analog demultiplexer 2 1 multiplexer electronic multiplexers analog switch analog mux ic 2 to 1 multiplexer mux ic multiplexer and demultiplexer 16 channel multiplexer video multiplexer 2 1 mux multiplexer mux high voltage multiplexer multiplexer logic analog switch multiplexer analog multiplexer circuit multiplexer design digital multiplexer ic switch multiplexer voltage reference 8 1 mux ethernet multiplexer data multiplexer analog multiplexer demultiplexer i2c analog multiplexer 8 input multiplexer 16 input multiplexer 16 channel digital multiplexer 8 to 1 mux 2 input multiplexer 16 channel analog multiplexer 16 bit multiplexer multiplexer 4 to 1 multiplexer 8 to 1 4 input multiplexer i2c multiplexer high speed multiplexer multiplexer 16 to 1 multiplexer 2 to 1 logic multiplexer add drop multiplexer differential multiplexer 2 bit multiplexer quad multiplexer staco energy nmea multiplexer 16 multiplexer mux chip analog multiplexing multiplexer applications digital logic multiplexer multiplexer digital 16 to 1 mux multiplexer digital logic multiplexer in digital electronics multiplexer in dld cctv multiplexer mux 4 to 1 cmos multiplexer power multiplexer ic power multiplexer analog switches and multiplexers 16 to 4 multiplexer multiplexer and demultiplexer in digital electronics 4 to 16 multiplexer adc multiplexer 4 way multiplexer Raul s tutorial Raul s tutorial
Views: 84211 RAUL S
Analogue and digital signals: GCSE revision
 
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GCSE level covering: analogue, digital, oscilloscope, sound recording, amplification, multiplex, resolution, frequency, sampling rates
Views: 12922 DrPhysicsA
What is Pulse Code Modulation (PCM)
 
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http://www.fiberoptics4sale.com/wordpress/what-is-pulse-code-modulation-pcm/ http://www.fiberoptics4sale.com/wordpress/ In a brief sentence, pulse code modulation is a method used to convert an analog signal into a digital signal. So that it can be transmitted through a digital communication network, and then converted back into the original analog signal. The PCM process includes three steps: Sampling, Quantization, and Coding. In the sampling process, the magnitude of the analog signal is sampled regularly at uniform intervals. The obtained values are called samples. For a 4 kHz voice channel, the sampling rate is 8000 Hz, which means the signal is sampled 8000 times per second. The samples will then be converted to digital numbers as we will see in the quantization process. Quantization is the process of converting the obtained samples into discrete digital values. The most basic type of quantization is called uniform quantization. In an uniform quantization, the vertical axis, which represents the amplitude, is divided into equal sized steps. As shown in this figure, the range between 1 volt and -1 volt is divided into 16 steps, each step represents 0.125 volt. All the samples whose amplitude falls within an step, take the same step value. However, the quantization process introduces an error. This is because that the real amplitude of a sample is replaced by an approximate value. This error is called quantization noise or quantization distortion. In uniform quantization, the quantization distortion presents a problem. For example, let's assume a quantization error of 0.05 volt, if this happens at a high level signal, such as 5 volt, the noise ratio is 0.05 volt divided by 5 volt, which is 1%, not too bad. But if the same quantization error happens at a low level signal, such as 0.5 volt, the noise ratio is 0.05 volt divided by 0.5 volt, which is 10%. Simply put, for uniform quantization, the signal to noise ratio is good at high level signals, but bad at low level signals. That is why non-uniform quantization was introduced. In non-uniform quantization process, the steps are not of equal size. Small steps are used for small signal values and large steps for large values. The purpose of doing so is to achieve that the signal-to-noise ratio is nearly independent of the signal level. This is done by favoring low-level voice over higher-level voice. In other words, more code groups are assigned to speech at low levels than at the higher levels, progressively more as the level reduces. This is shown in this figure. There are two types of non-uniform quantization methods in popular use today. They are the A-law and the u-law. Let's first look at the A-law. A law follows the logarithmic formula listed here, with A equals to 87.6. We can see that the curve consists of linear piecewise segments, seven above and seven below the origin. The segment just above and the segment just below the origin consists of two linear segments. Counting the collinear elements by the origin, there are 16 segments. Each segment has 16 8-bit PCM codes assigned. These are the codewords that identify the voltage level of a sample at some moment in time. Each codeword, often called a PCM "word", consists of 8 bits. The first bit tells the receiver if the sample is a positive or negative voltage. We can see that all PCM words above the origin start with a binary 1, and those below the origin start with a binary 0. The next 3 bits in sequence identify the segment. There are eight segments above the origin and eight below the origin. The last 4 bits, shown as XXXX, indicate exactly where in a particular segment that voltage line is located. The second is called u-law. It follows the logarithmic formula listed here with u equals to 100. The North American T1 system uses the u-law quantization and coding process. The process is similar to that of A-law. Colin Yao Sales Manager Fiber Optics For Sale Co. 1532 Centre Pointe Dr. Milpitas, CA 95035 Web: http://www.fo4sale.com
Views: 231593 FOSCO CONNECT
Lec 47 Time Division Multiplexing, PAM PWM and PPM
 
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Subject : Communication Systems Faculty : Mr. SK Partydar Sir Genique Education is an educational organization that is committed to providing the best learning experience of Exams like GATE/ESE/PSU with something different conceptual approaches towards learning. Education is not all about studying and getting good marks but it means to discover new things and increase one's understanding towards their aim that is how exactly one can achieve their goal in an effective manner. We believe in education for all and we are redefining technical education from the bottom up. 1. Network Theory Crash Course : https://tinyurl.com/y7hvvxs9 2. Signal & System Crash Course : https://tinyurl.com/y7fsw47u 3. Communication System Crash Course : https://tinyurl.com/ya8gtfrz 4. Control System Crash Course : https://tinyurl.com/yazmxx8y 5. Digital Electronics Crash Course : https://tinyurl.com/y7dqer22 6. Analog Electronics Crash Course : https://tinyurl.com/y95rjogn 7. Electrical Machine Crash Course : https://tinyurl.com/y95rjogn 8. Power System Crash Course : https://tinyurl.com/ybe4m3lg 9. Power Electronics Crash Course : https://tinyurl.com/y7af7j2v 10. EDC Crash Course : https://tinyurl.com/yaw7d5cc 11 Mathematics Crash Course : https://tinyurl.com/y8odpapz 12. Aptitude Full Syllabus : https://tinyurl.com/yburode4
Views: 2087 Genique Education

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