eye pattern.rar_eye pattern_不同信噪比时的眼图

B=1; Ts=1; fD=1; s=sign(randn(1,1000)); Y=rcosflt(s,1,100,'fir',1,5); eyediagram(Y,500,5); title('无噪声时的眼图a=1'); figure(1); clc; snr=30; m=randint(1,100); x=m*2-1; var=10.^(-snr/10); y=rcosflt(x,1,100,'fir',1,5); n=sqrt(var)*randn(length(y),1); y1=y+n; y=eyediagram(y1,300); title('SNR=30dB时的眼图a=1'); figure(2); clc; snr=20; m=randint(1,100); x=m*2-1; var=10.^(-snr/10); y=rcosflt(x,1,100,'fir',1,5); n=sqrt(var)*randn(length(y),1); y1=y+n; y=eyediagram(y1,300); title('SNR=20dB时的眼图a=1'); figure(3); clc; snr=10; m=randint(1,100); x=m*2-1; var=10.^(-snr/10); y=rcosflt(x,1,100,'fir',1,5); n=sqrt(var)*randn(length(y),1); y1=y+n; y=eyediagram(y1,300); title('SNR=10dB时的眼图a=1'); figure(4); clc; snr=0; m=randint(1,100); x=m*2-1; var=10.^(-snr/10); y=rcosflt(x,1,100,'fir',1,5); n=sqrt(var)*randn(length(y),1); y1=y+n; y=eyediagram(y1,300); title('SNR=0dB时的眼图a=1'); figure(5);