With criterion of minimized average energy and criterion of maximize minimum Euclidean distance as the basic policies, it presents the optimazition mechanism of star-QAM constellation with fading channel and using Quasi-Coherent demodulation.
以平均能量最小以及最小欧氏距离最大为原则,确定了在衰落信道下OFDM系统中采用准相干解调时,星型QAM调制星座图优化的方法。