Introduction - If you have any usage issues, please Google them yourself
Either way, the performance in AWGN channel is obviously due to the performance in Rayleigh attenuation channel. This is also in line with reality. After all, AWGN channel is a special case of Rayleigh attenuation channel. In addition, the larger the number of sample frames, the smoother the BER curve will be, and less prominence will appear when studying the BER of a single encoding mode.