|
x=10*x2;%所求的周期脉冲信号N=8;%长度为8n=[0:1:N-1];k=[0:1:N-1];WN=exp(-j*2*pi/N);nk=n'*k;WNnk=WN.^nk;Xk=x*WNnk;magXk=abs([Xk(N/2+1:N),Xk(1:N/2+1)]);subplot(2,1,1);stem(n,x);%画出周期脉冲信号subplot(2,1,2);stem(k,magXk);xlabel('k');ylabel('Xtilde(k)');title('DFS of SQ.wave :L=2,N=8')%该信号频谱图不好意思写掉了一点x1=ones(1,2... |
