摘要
本文对MIMO-OFDM系统中的信道估计技术进行了介绍,根据是否使用训练序列,信道估计可以分为导频辅助信道估计、盲信道估计及半盲信道估计,本文分别对已有的信道估计算法进行了综述,并对一种已有的基于m序列的时域信道估计方法进行了改进。
The research of MIMO-OFDM has received much attention in the communication signal processing field. However, for the wireless mobile communication systems, the radio channel is frequency selective and time-varying. In order to improve the performance of MIMO-OFDM systems,it is especially important to estimate the channel accurately. The existing channel estimation algorithms for MIMO-OFDM are reviewed, based on the m-sequence, a time-domain channel estimation algorithm for MIMO-OFDM is improved.
出处
《中国新通信》
2009年第5期46-49,共4页
China New Telecommunications
