本程序是用MATLAB编写的用于仿真通信系统中信号经过QPSK和16QAM调制后，通过高斯白噪声和瑞利衰落信道的星座图仿真-This program written by MATLAB is for the students who are studying telecommunication.It s very useful to simulate the signal constellation.

论述了BPSK、QPSK、16QAM、2FSK 调制和解调基本原理，以及各种调制方式的在AWGN 信道和平坦Raleigh 信道下的误码性能。同时介绍了OFDM 的调制解调原理。并使用MATLAB编写程序，对其进行了实验仿真。-It discusses the BPSK, QPSK, 16QAM, 2FSK basic principles of modulation and demodulation, and various modulation error performance in AW