This document is about 16 QAM demapping of received data. But its a soft demapping method based Log likelihood ratio(llr). So results can be used as inputs for viterbi decoder or turbo decoder. It is very usefull to decrease BER for communication sys

4qam，16qam，64qam在高斯信道下的误码率仿真程序-4qam, 16qam, 64qam under Gaussian channel BER simulation program