qam16demod.m

来自「对Vblast—oFdm系统地仿真」· M 代码 · 共 20 行

% 
function bits = QAM16Demod(rx_symbols)

soft_bits = zeros(1,4*length(rx_symbols));  % Each symbol consists of 4 bits

bit0 = real(rx_symbols);
bit2 = imag(rx_symbols);

bit1 = 2/sqrt(10)-(abs(real(rx_symbols)));
bit3 = 2/sqrt(10)-(abs(imag(rx_symbols)));

soft_bits(1:4:end) = bit0;
soft_bits(2:4:end) = bit1;
soft_bits(3:4:end) = bit2;
soft_bits(4:4:end) = bit3;


bits=soft_bits>0;