QPSK分别在AWGN、Rayleigh、Rican三种信道下误码率仿真程序，附带一份完整的分析报告，是了解QPSK的在衰落条件下的非常好的素材。-QPSK respectively in AWGN, Rayleigh, Rican three channel BER simulation program, with a complete analysis report is a very good understanding of the material under fading condi