信号在传输过程中存在着多路径干扰，根据最小均方误差准则实现时域均衡，达到良好的解复用效果-The existence of multi-path interference signal during transmission, time-domain equalization based on minimum mean square error criterion, to achieve a good effect of the demultiplexed

Estimates the power spectral densities (PSDs) using both the generalized Ridge Regression (GRR) method [Hoerl, Kennard] and the ordinary RR method with loading level decided by the harmonic mean (HKB) and a Bayesian estimator (LW) for deciding the di