% channel

function [Rx] = channel(SNR, y_s)

% Tx_1 : transmitted data through the antenna 1
% Tx_2 : transmitted data through the antenna 2

% % variable in MIMO
% Rx = zeros(L/bit_n, 2);
% Rx_1 = zeros(L/bit_n, 1);
% Rx_2 = zeros(L/bit_n, 1);
% 
% % channel 1甫 芭模 單撈磐
% % channel 2甫 芭模 單撈磐
% Rx_1 = awgn(Tx_1, SNR, 'measured'); 
% Rx_2 = awgn(Tx_2, SNR, 'measured'); 
% Rx = [Rx_1 Rx_2];

Rx = awgn(y_s, SNR, 'measured');