AWGN.rar_AWGN QPSK_QPSK_QPSK_AWGN_QPSK传输_c awgn

#include "const.h" void transmitter(int (*bit), double (*signal)[2]){ bit_generator(bit); QPSK_modulator(bit, signal); } void bit_generator(int (*bit)){ int n; for(n=0; n<BITN; n++){ bit[n] = rand() & 0x1; } } void QPSK_modulator(int (*bit), double (*signal)[2]){ int n, bit1, bit2, symbol; int bin2sym[2][2] = { { 0, 1}, { 3, 2} }; double sym2sgnl[4][2] = { { OneBySqrt2, OneBySqrt2}, {-OneBySqrt2, OneBySqrt2}, {-OneBySqrt2,-OneBySqrt2}, { OneBySqrt2,-OneBySqrt2} }; for(n=0; n<SYMBOLN; n++){ bit1 = bit[n*2]; bit2 = bit[n*2+1]; symbol = bin2sym[bit1][bit2]; signal[n][0] = sym2sgnl[symbol][0]; signal[n][1] = sym2sgnl[symbol][1]; } }