Wireless communication method and apparatus

A wireless communication method, comprising:

• receiving, by a second device, a first signal sent by a first device, wherein the first signal carries a plurality of bits;
• receiving, by the second device, a second signal sent by a relay device, wherein the second signal carries a plurality of pieces of first information, the plurality of pieces of first information correspond to a plurality of first bits in a one-to-one manner, first information corresponding to a first bit of the plurality of first bits is determined by the relay device based on a probability that the first bit is 1 and a probability that the first bit is 0, and the plurality of first bits comprise a part or all of the plurality of bits carried in the first signal;
• demodulating, by the second device, the second signal based on a third modulation scheme to obtain the first information, wherein the third modulation scheme comprises a quadrature phase shift keying (QPSK) modulation scheme;
• and
• decoding, by the second device, the first signal and the second signal to obtain the plurality of bits carried in the first signal.