单天线OFDM系统的信道估计算法研究

Algorithms of single antenna channel estimation in OFDM systems

介绍MIMO-OFDM系统中几种基于导频的信道估计方法。首先研究了单天线OFDM系统的信道估计算法。一方面重点关注三种估计准则的原理,仿真表明LMMSE准则具有最佳的性能;另一方面介绍了几种插值的方法用来恢复非导频处的信道信息。

This paper introduces several kinds of channel estimation method in MIMO-OFDM systems based on pilot. Firstly, the single antenna channel estimation algorithms in OFDM systems are presented. A focus on aspects of the three principle of estimation criterion, the simulation results show that LMMSE has the best performance criteria; channel information on the other hand, it describes several methods of interpolation used to restore the non-pilot.