BPSK调制解调及误码率的计算(共3页).doc

%随机产生码元clcclear allnum=10;%码元个数ek=round(rand(1,num,1);%产生载波t=0:2*pi/999:2*pi;%周期num1=1000;%个数 len=length(t);c=-sin(t);%调制ektemp=;ctemp=;for n=1:numif ek(n)=0 ctemp=ctemp,-c; a=zeros(1,len); ektemp=ektemp,a; elseif ek(n)=1ctemp=ctemp,c; a=ones(1,len); ektemp=ektemp,a; endendsubplot(2,1,1); %分别画出原信号、已调信号示意plot(ektemp,LineWidth,1.5);title(原码元);grid on;axis(0 num1*num -2.5 2.5);subplot(2,1,2);plo