最小二乘算法联合判决反馈均衡器进行信道仿真，用于优化信道性能。-Joint least-squares algorithm for decision feedback equalizer channel simulation, to optimize channel performance.

叠加训练序列的最小二乘信道估计与最小均方误差均衡，QPSK调制，做了4次迭代估计的性能对比。-superimposed training, least squares (LS) channel estimation, MMSE equalizer, QPSK modulation, 4 times iteration.