?? ber.m
字號:
function [y]=ber(snr,modulation_type,fading_type);
%根據調制方式和衰落方式計算單鏈路ber
switch fading_type
case 'Rayleigh'
switch modulation_type
case 'BPSK'
y=(1-sqrt(snr./(1/2+snr)))/2;
case 'QPSK'
y=(1-sqrt(snr./(1+snr)))/2;
otherwise
error(['Modulation-type unkonwn:',modulation_type]);
end
case 'no'
switch modulation_type
case 'BPSK'
y=q(sqrt(2*snr));
case 'QPSK'
y=q(sqrt(snr));
otherwise
error(['Modulation-type unkonwn:',modulation_type]);
end
otherwise
error(['Fading-type unknown:',fading_type]);
end
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