alamouti_decoder21.m

alamouti結合ofdm系統下 做的仿真系統。 提供大家討論使用 不懂的再與我聯絡吧

function [Ich_shifted, Qch_shifted] = alamouti_decoder21(Ich, Qch, h0_I, h0_Q, h1_I, h1_Q)

len = length(Ich);

Ich_shifted = zeros(1, len);
Qch_shifted = zeros(1, len);

for k = 1:2:len-1
    Ich_shifted(k) = h0_I*Ich(k) + h0_Q*Qch(k) + h1_I*Ich(k+1) + h1_Q*Qch(k+1);
    Qch_shifted(k) = h0_I*Qch(k) - h0_Q*Ich(k) - h1_I*Qch(k+1) + h1_Q*Ich(k+1);
    
    Ich_shifted(k+1) = h1_I*Ich(k) + h1_Q*Qch(k) - h0_I*Ich(k+1) - h0_Q*Qch(k+1);
    Qch_shifted(k+1) = h1_I*Qch(k) - h1_Q*Ich(k) + h0_I*Qch(k+1) - h0_Q*Ich(k+1);  
end