demodulation.m

是一个根据最新LTE标准写的一个链路实现程序和信道估计程序

function turbo_re = demodulation(data_re_p1,data_re_p2)
x1 = data_re_p1;
x2 = data_re_p2;
x1_odd = sqrt(2).*real(x1);
x1_even = sqrt(2).*imag(x1);
x2_odd = sqrt(2).*real(x2);
x2_even = sqrt(2).*imag(x2);
leng1 = length(x1_odd);
temp1 = cat(1,x1_odd,x1_even);
temp2 = cat(1,x2_odd,x2_even);

y1 = reshape(temp1,1,2*leng1);
y2 = reshape(temp2,1,2*leng1);
% 解调结束
leng2 = length(y1);
temp3 = cat(1,y1,y2);
y = reshape(temp3,1,2*leng2);
% 奇偶码位逆映射结束
y_re = (y+1)./2;
turbo_re(1,1:8265) = y_re(1,1:8265)