Questions tagged [multiplexing]

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How to form the common message for the 6G Rate Splitting scheme?

Recently, there have been some interest regarding the rate splitting scheme for 6G due to its higher rate capability Short Tutorial on Rate-Splitting (Multiple Access) for 6G This video states that ...
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27 views

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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1answer
39 views

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 ...
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38 views

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 ...
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101 views

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 ...
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2answers
152 views

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 ...
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23 views

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 ...
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1answer
142 views

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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195 views

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?
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48 views

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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199 views

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 ...