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Questions tagged [multiplexing]

In telecommunications and computer networks, multiplexing (also known as muxing) is a method by which multiple analogue message signals or digital data streams are combined into one signal over a shared medium.

In telecommunications and computer networks, multiplexing (also known as muxing) is a method by which multiple analogue message signals or digital data streams 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.

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Does IO multiplexing on one single read-only fd help get better performance than simply blocking read on it?

According to my knowledge, I think if I only need to perform reading operation on one single fd, IO multiplexing like select/poll will not help on performance, it even causes more overhead than just reading fd blockingly. But the linux auditd…
user2828102
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VHDL: Selection of images using switches

I am currently working with VGA in Vivado on a Basys3 FPGA and I am having some issues. I want to generate different images (test mires). I have a separate .vhd file for each of these images, and a top level file where I would like to use a…
Levente Rigán
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Entity Framework and Multiplexing

My company has a windows application that calls on a "Service Client" to retrieve data from SQL. The application is installed on say 10 users' machines. The SQL server has 1 licensed user. The Service Client uses that licensed user account to…
jjf1978
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Python - Multiple client servers for scaling

For my current setup, I have a single client server using Tornado, a standalone database server and another standalone server for my website. I'm looking at having a second client server process running on the same system (to take advantage of its…
TheQuickQuestioner
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Time Division Multiplexing: Frame rate and bit rate

Can someone explain to me how to get the answer I am so lost. Q1. A multiplexer combines four 100-kbps channels using a time slot of 2 bits. What is the frame rate and the bit rate? The answer is 50,000 Frame per sec and 400 kbps.
Mebighobo
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How Can I exemplify spectrum multiplexing (FDM/TDM)

I'm leading a lecture on mobile networks this week and would like to have some kind of code implementation that utilizes spectrum multiplexing in some way. This is tricky to research as spectrum is on the physical layer, so I thought I would ask for…
Broaj
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verilog mux not working

I wanted to build a small code for 2*1 mux where the inputs come from different modules (to make it more practical), but I'm always getting output as High Impedence ('Z'). Any suggestions? module mux_using_assign( din_0 , // Mux first input …
user3185902
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select() with const timeout parameter?

The select(2) system call is defined as follows in chapter 6.3 of Unix Network Programming (2003) by Stevens, Fenner and Rudoff: #include #include int select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set…
unix_newbie_programmer223
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How to Write A Mux With Several Inputs Without Creating a New Input Signal?

If this can't be done, just leave me with a simple "no" plus perhaps a short answer as to why, but I'd just like to double check this can't be done. I have this process: process(clk_p) begin if rising_edge(clk_p) then if rst_i = '1'…
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Handling multiple clients for game server

I am having trouble figuring out how to store client handles without blocking the server. I am following the concurrent server model detailed in "The Socket Networking API" by Stevens. My program creates tic tac toe matches between players. The…
mrQWERTY
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SPDY multiplexing makes requests slower than HTTP

I have an application that makes a mixture of network requests, some small items (~20kB) and some large items (>2mB). If my understanding of SPDY is correct, SPDY multiplexes requests on the same connection, so the smaller requests could potentially…
huan
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Multiplexer with variable size signals

I am using MATLAB/simulink 2014a and I would like to feed a multiplexer (with 3 ports) with 3 signals which have variable-sizes. But I get the error: Someone could help me to solve the problem? Thanks a lot.
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Approaches for having multiple applications receive data via port 80

I'm looking for suggestions about approaches to allow multiple applications to use port 80 for communication. I know it's impossible, or at lease not sensible to have multiple applications to actually bind to port 80, however, I've seen appliances…
TheMeaningfulEngineer
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Accept() returns a reference to stdout (1) when using pthreads

Original post: I have been learning network programming from Beej's Guide to Network Programming for school. I'm currently working on a prototype for myself to communicate among multiple connections concurrently by using threads and I/O…
Gallanoth
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How to see previous data using multiplexer

I am using arduino uno, 2 multiplexer and voltage devider network in my circuit. I am using 8:1 analog multiplexer. Here is my below code. Problem i wanted to read the values when i send so,s1,s2,s3. Currently in below program i am just enabling the…
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