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Questions tagged [multiplexing]

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Choosing a suitable modulation format

I'm trying to deal with this question about multiplexing and choosing an appropriate modulation format. It's in two parts. (i) You need to design a system for the transmission of surround audio ...
j_ik_c's user avatar
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What does the bandwidth of a medium even mean?

Whenever the bandwidth of a medium linking two devices is greater than the bandwidth needs of the devices, the link can be shared. Multiplexing is the set of techniques ... Forouzan, Data ...
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Scaling plots after FFT

I have multiplexed 32 signals into 1 signal with python. Now I want to plot that signal in time domain and to plot it's amplitude spectrum. Professor gave us his plots so we can look up to it. These ...
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What are different encoding schemes used in gigabit ethernet?

I was reading about digital transmission, there are many steps namely Analog to Digital conversion Source coding Channel coding Line coding Pulse shaping Modulation Multiple access techniques Out of ...
SUNITA GUPTA's user avatar
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Why is a multiplexed FM signal broadcasting silence so... spiky?

I'm trying to understand how American FM multiplexing works. As I understand it, your average FM signal can be made out of: The mono "sum" channel from 30 Hz to 15 kHz, made out of left + ...
Chris Akridge's user avatar
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Resources on multiplexer and demultiplexer?

If I search multiplexer in Google and start reading, I find sources that describe a multiplexer as a device that selects between several analog or digital signals, then outputs a single signal. For ...
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Combining CDMA with differential Manchester-like encoding?

I wonder to which extend it is possible to combine a self-clocking code (like Differential Manchester encoding) with synchronous CDMA, and how it would be done? Suppose I want to receive some bits ...
divB's user avatar
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The use of FDM for a single message signal

Suppose I have a single message signal, m(t), that is subjected to AWGN upon transmission. Is there any way that FDM (or any multiplexing strategy) can be used to ultimately improve the SNR of the ...
Jonah F's user avatar
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Length of CDMA code and message length vs. number of participants

What is the minimum code size for CDMA codes for synchronuous CDMA (not asynchronous CDMA!) with N number of participants? Furthermore, suppose N parties want to uniquely transmit a message of length ...
divB's user avatar
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MU-MIMO Sensitivity to Line of Sight (LOS)

Why do researchers talk about MU-MIMO being "less sensitive to line of sight" / "LOS Okay"? For example in this video, time=[00:40,00:42] Similarly, "User separation based on spatial channel ...
Tompa's user avatar
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The difference about WPCN and TDMA or FDMA

I am a little bit confused about the difference WPCN and TDMA or FDMA,i mean the level difference. WPCN is a wireless powered communication network,as the name implies,it can transmit the information ...
Shine Sun's user avatar
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Are convolution and multiplexing synonymous?

Other than preferences to use one or the other words in different domains, do they refer to essentially the same process? And likewise for the opposite operations, demultiplexing and deconvolution?
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How is multiplexing on FM signals performed? [closed]

How does multiplexing differ from FM signals to AM signals. If both FM and AM shift the message signal in frequency, then is there a difference between multiplexing for FM or AM signal?
user281270's user avatar
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Noise floor of a FM duplex

If these 2 signals, that form this duplex, have ranges of 15-30 [kHz] and 30-45 [kHz] using: $NoiseFloor_{dBm} =10\log _{10}(k\times T_{0}\times 1000)+NF+10\log _{10}(BW)$ (formula from wikipedia) ...
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Receiving multiple signals at the same frequency at the same time

I'm doing a project for my school it's a communication platform for different mobile devices I'm gonna build and I need to send data from the devices to station am making, I figured how to use signal ...
user4920718's user avatar