单径瑞利信道中的BPSK相干解调的（理论）误码率性能

%author: ddatalent %date: 2021/06/28 clear;close;clc; snr=zeros(1,30); snr(1)=1e-3; for i=1:29 snr(i+1)=snr(i)*1.5; end Pb=zeros(1,length(snr)); for i=1:length(snr) Pb(i)=1/2*(1-sqrt(4*snr(i)/(1+4*snr(i)))); end; figure() plot(20*log10(snr),Pb); xlabel('SNR(dB)'); ylabel('Pe'); title('理想误码率曲线'); grid on