qam16_thresholds.m

Qam 16 in rayleigh channel

function    [Real16,Imag16] = QAM16_thresholds(RxChannelSymbols)

numChannelSymbols = length(RxChannelSymbols);
Thresholds = [-2,0,2] / sqrt(10) ;

RealRxChannelSymbols = real(RxChannelSymbols);
ImagRxChannelSymbols = imag(RxChannelSymbols);
Real16=zeros(1,numChannelSymbols);
Imag16=zeros(1,numChannelSymbols);

for count = 1 : numChannelSymbols
    
    if  RealRxChannelSymbols(count) <= Thresholds(1)
        Real16(count) = 1 ;
    elseif RealRxChannelSymbols(count) <= Thresholds(2)
        Real16(count) = 2 ;
    elseif RealRxChannelSymbols(count) <= Thresholds(3)
        Real16(count) = 3 ;
    else
        Real16(count) = 4 ;
    end
    
    if  ImagRxChannelSymbols(count) <= Thresholds(1)
        Imag16(count) = 4 ;
    elseif ImagRxChannelSymbols(count) <= Thresholds(2)
        Imag16(count) = 3 ;
    elseif ImagRxChannelSymbols(count) <= Thresholds(3)
        Imag16(count) = 2 ;
    else
        Imag16(count) = 1 ;
    end
    
end