cp0203_ofdm_qpsk_demod.m

来自「uwb无线电基础书本（电子工业出版社）的MATLAB程序」· M 代码 · 共 20 行

function [R_bits] = cp0203_OFDM_qpsk_demod(y,N)

ntcp = N/4;
NT = 2*N + 2*ntcp;
r_n = max(size(y))/NT;
Y1 = zeros(1,2*N*r_n);
Y = zeros(1,(N-1)*r_n);
Z = zeros(1,2*N);

for a = 1:r_n
    Z = fft(y(2*ntcp+1+(a-1)*NT:NT+(a-1)*NT));
    Y1(1+(a-1)*2*N:2*N+(a-1)*2*N) = Z(1:2*N);
    Y(1+(a-1)*(N-1):N-1+(a-1)*(N-1)) = Y1(2+(a-1)*2*N:N+(a-1)*2*N);
end

[r_bits] = cp0203_qpsk_demod(Y);
R_bits = r_bits;