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# Relay Matlab

46 Threads found on edaboard.com: Relay Matlab

## i need help for matlab coding to calculate outage propability vs SNR in wireless sys

i have system and i want to write matlab code for this system to calculate outage probability vs SNR from relay to destination in defrent fading environment ( rayleigh one channel , nakagami onther channel ) can you please help me for that.

## amplification factor of Amplify and forward protocol

Hi all, in AF protocol the relay multiply the received signal from the source by an amplification factor β=sqrt(P/(N0+P|hsr|?) where P is the transmitted power,hsr is the channel 's vector between source and relay, my question is about how to calculate |hsr|? if we have hsr=randn(1,N)+j*randn(1,N) i other way hsrr is a N complex n

## Buffer aided Relay network

hi i want to simulate a buffer aided relay network with matlab. would any one help me , how can i simulate a (DF- thats my problem) relay network and how buffer work in this network and is there any specific code in matlab for it or what ?! thanks in advance

## 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 (...)

## single Relay simulation using QAM

Hi all I have code for single link (source- destination) using QAM simulation to produce BER curve. however I need to add relay node between source and destination and produce BER curve. can anyone help me with this please here is the code (matlab) M = 16; % Size of signal constellation k = log2(M); % Nu

## beamforming design for MIMO decode-and-forward relay channels

sir Help me to understand the matlab code for beamforming design for MIMO decode-and-forward relay channels

## relay placement or selection in networks matlab code

helo guys,, if any one having matlab code for relay placement in cellular networks .. plzz forward .. any related codes regarding relay placement or relay performance or simply relays also enough. plzz forwrd to me.. thnk you guys

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

The concept of cellular radio is based on the cell, which was decided to be a hexagon(6 sided). This is an approximation to a circular cell. The intuitive cell shape would be a square, but this is extremely hard to do with aerials and would be expensive, if it is possible to do at all. A big transmitter can have a hexagon radiation patter. Many s

## 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.

## matlab code of partial Relay selection in underlay cognitiveNetworks

I am sudiying an article "partial relay selection in underlay cognitiveNetworks with Fixed Gain relays" but i am facing some diffuculties in the simulation and analytic performance curves. if someone have matlab code for this article or any other partial relay selection which can help me please I am in great need of (...)

## Relay selection algorithm for cooperatice communication system

i kindly require the matlab code for relay selection as i am working with cooperati9ve system. thank you in advance.

## Decode and Forward in Matlab

Hi, can any one please help me to find the code of decode and forward strategy when using a relay station to transmit a signal from s1 to s2,in order to compare its SNR and BER to no-relay transmission ones please. Purpose is to show that transmission via relay is better than the direct transmission. PLease help..:(

## MatLab Code Problem Physical Layer Seccurity in Wireless Networks

Hi guys, basically I am working on this project for Physical layer security in wireless networks. I was supposed choose a information forwarding relay and a Jamming relay from a number of relays using particular criterias. The paper which I am following can be found here : -

## relay network optimisation

hey everyone, can anyone help me with optimisation? my project is on optimising a relay network and i am thinking of doing it using simulated annealing. i already have the problem formulation, all i need to do is implement it on matlab using simulated annealing. please reply. thanks

## Matlab Simulation - Physical Layer Security by Relay and Jammer Selection

Hi, I am doing my MSc on "Physical layer security". One of my main references is a paper entitled "Joint relay and Jammer Selection for Secure Two-Way relay Networks". I have a problem regarding this and would be grateful if you advise me. I am doing matlab simulating the secrecy rate in the scenarios that the best relay (...)

## Simulated annealing or genetic algorithms for relay deployment

Hey everyone, I am implementing a relay network and and my objective is to deploy a minimal number of relays while maximising capaci in the network. I will like to implement this using simulated annealing or genetic algorithms in matlab and I can't seem to find any source codes online. Please could anyone help me out? I will greatly (...)

## 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 by the (...)

## Anybody can share me matlab code for MIMO AF relay capaity

I'm working to evaluate performance of dual-dual AF relay MIMO network I need matlab code for simulate this problem ( ergodic Capacity) I have attached two papers Anybody can share me matlab code for this problem in these papers?

## 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

hi all, i am doing my final project on the above topic..i need a matlab code for one transmitter, relay and receiver with decode and forward and also the receiver should have feedback to the transmitter regarding the data received.. the modulation used should be chosen based on the channel strength..for example BPSK if the channel is noisy

## Htlp me matlab code for performace of multihop with fixed relay

What is the relaying mode of the relays?

## 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 a reference, my (...)

## Matlab code for Cognitive relay

How to write matlab code for finding the "Outage probability of Cognitive amplify and forward relay".

## 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 :)

hi guys i need a matlab code which represent relay in other words i need a code that represent the channel or link between source and relay also relay and destination (non line of sight) but by using \alpha-\mu fading distribution for cooperative relay using finite mixer method plz help me ASAP my (...)

## want help about Interference alignment project

Hi i am doing project on "Interference alignment with and without relay" and want your help in matlab code.... This is reference paper..."A Distributed Numerical Approach to Interference alignment and Applications to wireless Interference Networks"... in this paper there is algorithm " Distributed Interference Alignment algorithm".....

## need matlab code for MIMO

Hello , I am student of Communication signal processing and i want help from you. I am doing project on Interference Alignment scheme in MIMO. I have to implement The MIMO system using relay. So anyone can help me for matlab coding. I want code for MIMO system which is aided by relay ( relay like it can used (...)

## How to make relay fading for image in Matlab ?

Hi every one can any one help me how can I make Rayleigh fading for image in matlab I have spent long time to find this code but unfortunately I couldn't can any one help me ??

## Decode and Forward or Amplify and Forward Matlab code

Basically, if the underlying fading channels are Rayleigh, then SNR follows exponential distribution. That is y0, y1, and y2 are all exponentials, where y0, y1, and y2 are the instantaneous SNR of the direct path, the first hop of the relay path, and the second hop of the relay path, respectively. After generating them, calculate the equivalent SNR

## how to learn OFDM relay communication

dears, who can help me? now I am learning power allocation in OFDM relay channel, do you familiar with this field? could you give me some ideas and matlab codes to study, some codes about OFDM-AF, OFDM-DF, and subcarrier pairing. Thank you --- bless you all my email is

## 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:

## 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 (...)

## 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

## power allocation in relay networks

hello all please please guys i need help im doing a research on power allocation in relay networks and i have no idea what codes to use in matlab or algorithm to use for the simulation please can someone help me please.thanks

## 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

## eps in simulink relay block

HI, I want to use a relay in my simulink model and confused by the switch on point, the default value is 'eps' and the switch off point , default is '-eps', what is eps here? is it a number or something else? thanks.

## 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.

## PI auto tuning using Astrom's relay method

Hi......everyone I'm doing a project based on writing some matlab programs " M.files " to use it for the implementation of the Astrom relay method in PI self tuning.. is there any one have any idea about this subject???? Help me..... plz..

## constellation rearrangement at relay

I have new question, maybe anyone can help me in my final project. my title project is about constellation rearrangement at relay. but i get trouble in simulation using matlab. i can't simulate Rayleigh fading. maybe you can help me?

## Using relay as a comparator(1 bit quantizer) in simulink?!

Hi I am trying to model a sigma-delta modulator in matlab/Simulink. I need a 1 bit quantizer since my modulator is one bit. As we know a 1 bit quantizer would be a simple comprator but I could not find comparator in simulink blocks. Is it reasonable to use a relay instead or not? cheers, Mahyar

## relay as a comparator

I am trying to model some sigma delta ADC in matlab simulink. My question is that can I use a relay instead of a quantizer since I have a one bit comparator as a quantizer (N=1) ? the thing is that when I am trying to use quantizer for 1 bit as a result I get more than 2 level output! regards, Mahyar

## How can i draw these_? (matlab)

Hello Everybody, I have to draw images where blowe message. I have to use matlab or something :( Is there anybody who can help me? excessive current protect relay for electric lines How can i draw there msn ta1gs@hotmail.com Burak

## Explanation of PID auto tuning by relay tuning

Could some one tell me about PID autoning by relay tuning?.