function SymDeQAM=rx_QPSK_mod(SymFFT,OFDM_per_Symbol,Carrier_Num,Bit_Num)

SymDeQAMtmp=reshape(SymFFT,1,OFDM_per_Symbol*Carrier_Num);

bit0=real(SymDeQAMtmp);
bit1=imag(SymDeQAMtmp);

SymDeQAMtmptmp=zeros(Bit_Num,OFDM_per_Symbol*Carrier_Num);
SymDeQAMtmptmp(1,:)=bit0;
SymDeQAMtmptmp(2,:)=bit1;

for j=1:(Bit_Num*OFDM_per_Symbol*Carrier_Num)
    if SymDeQAMtmptmp(j)>0
        SymDeQAMtmptmp(j)=0;
    else SymDeQAMtmptmp(j)=1;
    end
end

SymDeQAM=reshape(SymDeQAMtmptmp,1,Bit_Num*OFDM_per_Symbol*Carrier_Num);