Since the CSIT plays a key role in the precoding scheme, the CSIT acquisition model is studied firstly.

由于发射端获得的信道信息对预编码系统的性能有重要影响，因此，本文首先研究了动态CSIT模型。

Based on the dynamic CSIT model, varies of robust precoding schemes are studied in this dissertation, including robust linear ZF precoding, robust linear MMSE precoding and robust THP precoding.

基于动态CSIT获得的部分信道信息，本文深入研究了不同的预编码机制，包括线性迫零预编码、线性MMSE预编码和非线性THP预编码。