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# Cooperative Relay

32 Threads found on edaboard.com: Cooperative Relay

## relay selection Matlab code

Hello I do need Matlab code for relay selection in cooperative wireless communication. Please, if any one has this code, may he send it to me? Thanks

## Need Help Please! Simulate Quantize-and-Forward Multi-hop Relay (BER vs SNR)

Hi guys, i'm trying to simulate Multi-hop relay cooperative communication using Quantize-and-Forward to find BER vs SNR. The result isn't correct yet, and i'm really confused right now. I really need your help guys. Here's the Matlab code i've made (just try to run it on your Matlab): %BER vs SNR for Direct and QF multi-hop relay%

## cooperative communication

hi... i have doubt , how two signals one from relay and another one from source (direct path)are combined at the destination?? can anyone send me any sample code for cooperative single relay communication??

## single relay, and Multi relay cooperative Communication matlab code ?

Hello! I need single relay, and Multi relay cooperative Communication matlab code thanks in advance

## Energy Efficiency of cooperative communication in Cellular Networks

Hi, I am working on Energy Efficiency of cooperative communication in Cellular Networks. Anybody send me the matlab codes for: Direct Transmission, Single relay, and Multi-hop Transmission and outage probability. i need to compare them. so Urgent Please.... Thanks in advance.

## network coding in cooprative relay

i am doing a thesis work in cooperative relaying. does anyone can expalin a best way to reduce intereference from a network coed cooperative relaying.

## AF Cooperative Diversity MATLAB Code (Variable gain vs Fixed gain)

Hi if I have dual hop cooperative system; S (source), R(relay), and D (Destination). and we have H_sr , H_rd for the fading channels between source-relay and relay-destination respectively. Ps is the Source Power; Pr is the relay Power; N is the total number of bits; G is the AMPLIFICATION FACTOR (...)

## Cooperative relay communications

Hello, everybody! I would be very appreciated if someone can help with Matlab codes of AF, DF and CC codes in cooperative communications. The case is: 1 source, 1 relay and 1 destination. Need to compare BER vs SNR plot of three relay techniques. Thanks a lot.:-D

## Cooperative communication

Hi, I am working about incremental relaying on cooperative communication system. System model: Source S, relay R, destination. I need the Matlab simulation code for "Throughput" in incremental relaying of Amplify-and-Forward cooperative protocol, over Rayleigh fading channels). If you have, please send me (...)

## amplify and forward network

sir, I am working on a cooperative diversity topic using AF relay, at which the received signal from the source is amplified and forwarded by the relay to the destination. I need the code for it so please mail email id is

## A question regarding cooperative diversity systems

Hi, Can a relay transmit using a subset of sub carriers, while receiving on another orthogonal subset of sub-carriers at the same time? In another word, can it transmit on a frequency and receive on another frequency at the same time like using FDMA? Thanks

## Information Theory Problem in Cooperative Diversity Systems

Hello, Suppose we have M sources, K relays, and one destination. The sources transmit sequentially using TDMA multiple access technique. Then the best relay is selected to transmit an XORed version of all signals from all sources, i.e.: we need M+1 time slots to transmit M signals. The question is, what is the mutual information between each

## MATLAB codes for relay selection in cooperative communication

hye there, i'm facing some trouble in finding the solution for my project. can anybody help me regarding the matlab codes for relay selection in cooperative communication?i am using the geographic random forwarding (GeRaF) protocol for the relay selection. i need the codes urgently. do email me akuspees@gmail.com tq :)

## need help about the variance

hello i am doing project on Power allocation in cooperative communication.. i am using source, relay and destination so channel(1) from source to destnation channel(2) from source to relay channel(3) from relay to destnation i want to set the variance of channel link between source to (...)

hello i am doing project on Power allocation in cooperative communication.. i am using source, relay and destination so channel(1) from source to destnation channel(2) from source to relay channel(3) from relay to destnation i want to set the variance of channel link between source to (...)

## hello, want help in cooperative communication project

i am doing project on " cooperative communication in cdma" i have done some work using 1 relay and equal gain using Amplify and forward protocol i want to do the next step for different gain for each path using Amplify and forward protocol??? code is attached with this please any body is having idea please guide me. thanks in advance

## AF Cooperative Diversity MATLAB Code Needed

Hi, I have trouble in programming AF cooperative diversity technique. I have the following MATLAB code, but the result does not match the theoretical results. I assumed that the power at the source is equal to the power at the relay. clear all; clc N=10^6;%Number of bits b=rand(1,N)>0.5;%Generate 0s and 1s s=2.*b-1;%NRZ SNRdB=0:2:

## cooperative relaying schemes

Hi all! I am working on a code to compare the scenario of bidirectional relaying with 3 nodes (sender , receiver and relay) in which the sender and receiver want to exchange their information via relay. I am working on amplify and forward and decode and forward case but they are giving very high BER , of the order of 1 in 100. If anyone (...)

## AF cooperative network matlab code

Hello, I'm trying to perform a simulation for a cooperative network that uses amplify and forward protocol in MATLAB and I find it very hard to produce a MATLAB code. The network consists of a source, a relay and a destination. I'll try to produce graphs mainly for BER and outage probability, not excluding any other graphs. If someone could help

## Looking for coopMAC Matlab codes or other related to cooperative relay communications

I am doing a research in cooperative relay communication.Can you please send me a source code for coopMAC or any other code related cooperative relay communications.*** bless you.

## LDPC code over relay channel

Hello If someone has LDPC code over relay channel in cooperative wireless communications by MATLAB please send it to me or upload it. Thanks in advance

## Relay Selection in Cooperative Communication with Interferen

Im also Working on cooperative Communication. but not on relay Selection. im just simulating relaying Protocols i.e AF DF etc if you have some material, advise regarding this topic do share with me Ch 8 of the Book May Help you. cooperative Communications and Networking K. J. R A Y L I U AHMED K. SADEK W E I F E N (...)

## What are the advantages of two-way/bi-directional relaying?

Hi,everyone~ I'm a beginner on cooperative communication,and I want to do some research on two-way relay(aka,bi-directional relay) network for my PhD thesis. I've read some articles on this topic,but still i'm not quite sure what are the advantages of two-way relaying(compared to unidirectional relaying). (...)

## how to measure SNR in cooperative communi for MRC

I have relay cooperative communication system.two relays and 2 data nodes. some defination in MATLAB codes for my simulation are as follows s1 = randint(N,1,); x1 = symbols(s1+1); s2 = randint(N,1,); x2 = symbols(s2+1); h11 = sqrt(0.5) * randn_c(N); h21 = sqrt(0.5) * randn_c(N); h12 = sqrt(0.5) * randn_c(N); h22 = sqrt(0

## Is relay transmission or cooperative comm. worth to work

My question simply is that Is relay transmission or cooperative communications is worth working field OR Its just a hype to produce the paper and to pass time. Please comment !!!!!!!!

## help!cooperative communication!

Hi, Maybe over a direct contact?:-): Paul Anghel (University of Minnesota) anghel@ece.umn.edu On the optimum power allocation in interference-free cooperative systems We consider an interference-free fixed wireless cooperative system where transmissions from different terminals are orthogonal. In the proposed system the idle

## Relay selection in cooperative communication !

I am a PhD student working on coopcom with relay selection. You may know the journal of Bletsas about "Simple cooperative diversity method based on network path selection". In my system, there are 2 relays ,I select the best relay, and send my BPSK signal to the destination. The relay selection (...)

## matlab code for multihop system over fading channel

Hi all I'm working on multihop systems and i want simulate one relay cooperative system (source, relay, destination) over a bloc fading rayleigh channel to trace throughput as a function of snr. could someone help me? wainting for urs comments

## matlab code for multi-relay cooperative communication system

Hi, I am working on cooperative communication system. Anybody send me the matlab codes for: * Generation of unifrom node distribution according to homogeneous PPP, *select any random node as relay from these nodes, *select the nearest node as relay, and *finally derive the outage probability for the end to end system. Thanks in advance.

## SNR Calculation in a two hop relaying system

Hello, I don't know if I can help you, but I will do my best. First of all, I will tell you how to compute the end-to-end SNR for Channel State Information (CSI)-assisted Amplify-and-Forward (AF) cooperative diversity system, at which the relay and the destination both have access to the instantan

## Amplify-and-Forward Cooperative Diversity

Hello, I am working on a cooperative diversity topic using AF relay, at which the received signal from the source is amplified and forwarded by the relay to the destination. Now, if we suppose that the source S has a single antenna, and the relay has N_A receive antennas, and we assume that the channels between S

## Need suggestion for PhD topic...MIMO, MIMO-OFDM, OFDMA

MIMO relay channel, cooperative MIMO and MIMO communications with limited feedback are some of the hot topics right now. You also have to decide if you want to go to information theoretical part of mimo or maybe signal processing part of mimo or could be other direction. You can read Professor Heath's webpage to get an overview of the current hot t

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