In order to eliminate the rest ISI and ICI, a new optimum precoder design method was given with the consideration of channel estimation error and changes caused by time deday of feeback channel.

• 本文考虑到信道估计误差和反馈信道时延带来的变化，用信道变化统一描述，给出了最大信道变化意义下的最优预编码器的设计方法。