1. 在matlab中，对k均值聚类算法的原理进行仿真实现；
2. 在不同信噪比下，比较接收QAM信号的星座图；
3. 对接收的星座图使用K均值算法进行均衡，比较使用算法和不使用算法直接解调的误码率。(1.we simulate the principle of K means clustering algorithm in MATLAB.　　　　　
2. the constellation diagram of receiving QAM signals is compared at different signal-to-noise ratios.　　　　　
3. equalizing the received constellation using the K means algorithm, comparing the bit error rate of the algorithm and the direct demodulation without using the algorithm.)