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Matlab Rayleigh Noise

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17 Threads found on edaboard.com: Matlab Rayleigh Noise
i really need help with matlab code to create a basic 2x2 mimo system. I am a noob so please explain thoroughly. and i would also like to know how it can be changed to simulate a 4x4 etc. it doesnt need rayleigh fading or any noise as of yet. Just a basic mimo system. Thanks
I am writing a matlab code about convolutional encoder. I have created trellis for 4,8,16 and 32 states and their corresponding viterbi decoder(using vitdec matlab function). My system goes like this: Trellis Encoder-->DPSK Modulator-->rayleigh fading Channel + awgn noise-->DPSK Demodulator-->Viterbi Decoder For the 4 (...)
I am writing a matlab code about convolutional encoder. I have created trellis for 4,8,16 and 32 states and their corresponding viterbi decoder(using vitdec matlab function). My system goes like this: Trellis Encoder-->DPSK Modulator-->rayleigh fading Channel + awgn noise-->DPSK Demodulator-->Viterbi Decoder For the 4 (...)
Hi, in QPSK system: what are the matlab equations for noise and fading channel? also; what is the theoritical equation for calculating BER? this is because I see several different formula, for example: 1- N0 = 1/10^(SNR(i)/10); n = sqrt(N0/2)*(randn(1,length(sig))+1i*randn(1,length(sig))); h = sqrt(0.5*((randn(1,length(sig)))
Help me for neural network code for predicting a the errors in matlab and to succesfully receive the transmitted bits at the receiver end in a channel which is affected by rayleigh fading and gaussian noise.
use rayleighchan() matlab function directly.
Can any one tell me what is the difference between fast and slow rayleigh fading channel? And how can I represent them be matlab? Thanks in advance
I have a look on people's matlab on BPSK BER over rayleigh channel. I don't understand why noise and channel are the same as shown below. so rayleigh channel is the same as noise then? Can anyone explain it to me please. noise=1/sqrt(2)*(randn(1,N)+1i*randn(1,N)); %AWGN (...)
Hi, According DVB-T demo in matlab Communication block set, it is a fair simulation model with not having guard interval and so on. But we can simulate in AWGN noise and this shows zero BER. But after i modified by inlcuding rayleigh Multipath channel the BER is increasing to 0.5. That means i need to add something at the reciver (...)
I have an assignment on mobile communications and it's on Matalab and I need some help on some of the components that make up the code. I need to create a component that generates information bearing bits from the binary set {0 1}. Every 200 bits should form a frame. Also, I need to create a QPSK modulator that maps two binary bits to QPSK sy
Hi am using matlab 2007, what is "modulate(modem.pskmod,x)" ? can't u use directly pskmod? that is what i used in your code and obtained err of 50%, still very high.... so i suggest u use an equalizer onteh received signal before demodulating to reduce the efffect of the channel.
Hi all, I am trying to simulate different fading channels in matlab (rayleigh, Nakagami, Log-normal). I have done the rayleigh but need some help with the Nakagami and Log-normal Fading. For the rayleigh Case I have % rayleigh fading X = sqrt(0.5)*( randn( 1, symbols_per_frame) + j*randn( 1, (...)
simple question >>> when we model rayleigh channel we use in matlab this command h = 1/sqrt(2)*; % rayleigh channel also we can use the distribution of rayleigh channel which is very known p(gama)=(1/gama_ave).*esp(-gama/gama_ave); so what is relation between two commands ? thanks
Hi, Could you please help me how to use the Maximum Ratio combination in Multipath rayleigh fading channel, using matlab comands, and have a look for the program bellow you will see the error that I have, and could you tell me the problem, and how to solve it. clear all whos SNR=0:2:20; %Range of noise in dB. M=2; % DBPSK (...)
Could anyone please help me about the matlab code simulating the rayleigh fading in which having the white guassian noise and the doppler filters? Also,it will be very thankful if you could explain me some brief idea about it. ^__^" hOw to program the white guassian noise ? and how to program the doppler filter on (...)
I am trying to simulate a 16 QAM modulation in rayleigh channel. However the BER is always around 0.5 no matter the Eb/No is. The channel model I am using is: ch=1/sqrt(2)*(randn(N,1)+sqrt(-1)*randn(N,1)); where N is the number of bits. noise=1/sqrt(2)*(randn(N,1)+sqrt(-1)*randn(N,1)); is the AWGN. s_hat=sqrt(snr(k)).*abs(ch).*X + nois
Hi all, I have got a rayleigh Fading Channel Simulation code by matlab. The code list below: % rayleigh fading a = sqrt(0.5)*( randn( 1, symbols_per_frame) + j*randn( 1, symbols_per_frame) ); % complex noise noise = sqrt(variance)*( randn(1,symbols_per_frame) + j*randn(1,symbols_per_frame) ); % (...)