# Designing Rayleigh Fading Wireless Channel with particular properties [closed]

I have some information on particular wireless channel between an Access Point(AP) and K users as described in the picture below: How i can create this channel in Matlab?

## closed as off-topic by Marcus Müller, MBaz, Peter K.♦Feb 5 at 14:08

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## 1 Answer

theta0 = 6.25*10^-4;
di = 10; %whatever it is
h = theta0.*.*di^(-3).*(1/sqrt(2)).*(randn(1,500) + 1i.*randn(1,500));
g = theta0.*.*di^(-3).*(1/sqrt(2)).*(randn(1,500) + 1i.*randn(1,500));

• The paper said that they averaging over 500 randomized channel realizations. what is that supposed to mean? Is it equivalent to produce 500 sample? what is the averaging role? – Morteza Feb 1 at 19:10
• They compute something using these channels, using one realization a time, and then average over all 500 realizations. For example, suppose they want to compute average BER. Then you need a loop of 500 and find the BER for each realization, sum them up, and then divide the total sum by 500. The average role here is take into account the variations of the channels. In fading channels, the instantaneous performance fluctuates considerably with the channels. The average gives better insights. – BlackMath Feb 1 at 19:56
• If I answered your question you can choose it as the answer. – BlackMath Feb 1 at 21:20