OFDM通信系统与QPSK系统性能比较(15)

%判决门限取0 if((fftout(K))>=0) outsign(count)=0; count=count+1; else

outsign(count)=1; count=count+1; end

if((fftout(N/2+1))>0) outsign(count)=0; count=count+1; else

outsign(count)=1; count=count+1; end for K=2:N/2

realpart=real(fftout(K)); imagpart=imag(fftout(K)); if(realpart>=0) outsign(count)=0; count=count+1; else

outsign(count)=1; count=count+1; end

if(imagpart>=0) outsign(count)=0; count=count+1; else

outsign(count)=1;