%
% Generating binary{+1,0} data matrix(K x B)
%
% K: num. of user; B: num. of bit per user
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function y=binaryO(bits_per_ch,ch)

for ith_symbol=1:bits_per_ch*ch
    data(ith_symbol)= 2*round(rand)-1;
end

data_reshape=reshape(data,ch,bits_per_ch)
y=data_reshape