bpf.m

来自「自己做的一个OFDM系统的波形信道仿真,分成各种模块实现」· M 代码 · 共 12 行

function [t,st] = bpf(f,sf,B1,B2)
df = f(2)-f(1);
T=1/df;
hf = zeros(1,length(f));
bf = [floor(B1/df):floor(B2/df)];
bf1 = floor(length(f)/2) + bf;
bf2 = floor(length(f)/2) -bf;
hf(bf1) = 1/sqrt(2*(B2-B1));
hf(bf2) = 1/sqrt(2*(B2-B1));

yf = sf.*hf.*exp(-j*2*pi*f*0.1*T);
[t,st] = F2T(f,yf);