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## simulation of mimo ofdm systems

Good day colleagues, please can anyone help with the MATLAB codes for the simulation of the performance of MIMO-OFDM system in a Nakagami q fading channel using different modulation schemes, antenna configuration, and equalization techniques? the performance measures to be used are the spectral efficiency, outage probability, and average (...)

## Strange bug with simulation of comparison of 1T1R, Beamforming(2T1R), STBC(2T1R)

Hello, I'm trying to make a Matlab simulation about the comparison of 1T1R, Beamforming(2T1R), and STBC(2T1R) under Rayleigh fading channel, but something strange happend. Below is my code. When I comment the first part of my code(1T1R), the results of the others is good, but when I uncomment the first part, the BER of the other two (...)

## Simulation of Rayleigh Fading Channel

Hello, I am relatively new to Matlab and I find it quite hard to really get started on my problem and I hope to find some help here. I checked the already existing threads, but it didn't really help me and since the threads are quite old I hope it's ok to start a new one. OK to my task: I need to simulate the bi-directional wireless com

## simulation of a rayleigh block fading channel in matlab

Hello Everyone ; I'm trying to simulate a communication system using matlab In my system the channel is assumed to be rayleigh block fading i.e the channel is static during the transmission of one block and vary from a block to another. My code is as follows : channel = (...)

## ber plot for qpsk in rayleigh channel changes every time I simulate

Plot of ber vs ebno for qpsk in rayleigh channel using the object rayleighchan changes for each simulation. Why does this happen? My code is as follows: % Create Rayleigh fading channel object. chan = rayleighchan(1/10000,0); % Generate data and apply fading channel. M = 4; % (...)

## simulation of a new modulation scheme in fading channel using MATLAB functions

Hi I want to simulate a new modulation scheme named DCSK for Differential Chaos Shift Keying. this modulation does not use sinusoidal signals as base signals, but uses chaotic signals (a noise-like signal). for each symbol to be sent, we have a signal consisted of N real samples. I want to pass this signals through a fading channel and I wan

## rayleigh channel simulation

hi all,I have a matlab code that I found on the net, it is the simulation of a Rayleigh channel, can you help me to send a picture on this channel?? code : % Script for computing the BER for BPSK modulation in a % Rayleigh fading channel clear N = 10^6 ;% number of bits or symbols % Transmitter (...)

how we simulate for rayleigh channel fading by using rayleighchan (built-in function in matlab)

## Outage Probability Simulation for Rayleigh fading channel

Outage is defined as events where the receiver cannot fulfill the required performance. So first you have to decide what is considered outage events - for example, you can define BER = 10E-4 is the minimum BER your system can handle. and all below it (i.e. BER = 10E-3) is a failure. So, after defining this criterion you now have to return to you

## Spatial Modulation using MATLAB

Hi all, I am currently working on this project - Spatial Modulation for Multiple-Antenna Wireless Systems This project will focus on building the simulation program using MATLAB to study the performance of SM under different channel fading conditions, number of transmit-antennas, and power allocation methods. I am having difficultie

Help me, please...... I tried to make a simulation how a system with no diversity goes trough Rayleigh channel. I used QPSK modulation. But the performance graphic looked so bad (I mean, it was not like a "waterfall". It had no pattern at all). The fading model ran well on system with MRC. But not with single input single output. Does (...)

## How to model the channel as clarke's flat fading model in matlab

while i am re-simulating a paper(attached file) the author at the (V. simulation result) section mentioned that the channel is "clarke's flat fading model " i want to know how to do that in matlab as i only found the "rayleighchan" function which is used to simulate Rayleigh channels but with jakes model Any Help?

## Correlated fading (time-invariant channel) in Matlab

Hello to everyone, I am currently working on a MATLAB project regarding the implementation of different adapting modulaction and coding (AMC) algorithms for a mobile TDMA communication system based on an existing Matlab simulation tool developed in cooparation with my university and a company. This project runs about 1 year now. It has been alr

## Adaptive modulation and coding average BER computation in Simulation

Hi everyone, i have written a Matlab simulation to compute average BER per average SNR over a Rayleigh fading channel. I want to know how do u calculate the average BER per SNR for AMC, do u restrict error contributions per AMC mode, or do you add all bit errors contributed by different AMC modes for a particular SNR?

Hi all, I have got a Rayleigh fading channel simulation code by Matlab but its performance about resulting BER is not right. The code list below: N=length(spread_sig); n = sigmaN*(randn(1,N)+1j*randn(1,N))/sqrt(2); % white gaussian noise, 0dB variance h = 1/sqrt(2)*(randn(1,N) + 1j*randn(1,N)); % Rayleigh (...)

## Rayleigh fading in MATLAB problem

I try to measure the theory BER value under Rayleigh fading and AGWN. For AWGN simulation i used Q function, BER_awng = qfunc(sqrt(2*EB_N0)). However there is a problem that i dont how to simulate theory BER value under Rayleigh fading. Someone can help me?

## matlab multipath channel visualization tool... [problem in recreating the plots]

Dear All; I would appreciate your help. I have been reading one of publication entitled "A Matlab-based Object-Oriented Approach to Multipath fading channel simulation" available to download from Mathwork website. This look at the theory behind Matlab Rayleigh and rice multipath fading simulator. I am (...)

## 16 QAM simulation over Rayleigh channel in Matlab

Hello everyone! I would like to demodulate 16 QAM modulated signal after Flat Rayleigh channel and AWGN by usining modem.qamdemod. My BER graph is far from the thoretical. Any help will be appreciated. Den. Here is my code: % Create Rayleigh fading channel object. chan = rayleighchan; g = chan.PathGains % (...)

## About values for Channel Matrix and SNR gap

Hi All I am trying to do a simulation for iterative water-filling algorithm involving two users communicating across a flat-fading channel of four subbands. To calculate for the rate in each sub-bands using shannon limit, i need to get the cross coupling between the two users. The cross coupling between the two users is a function of (...)

## Regarding the simulation of QAM on Rayleigh fading channel

Hi, I am very new in wireless systems I have tried to simulate QAM on Rayleigh fading channel This is a mathematical model of Rayleigh fading channel y = hx + n where y = complex receive vector h = channel gain according to Rayleigh fading x = complex transmit vector n = complex (...)