华中师范大学学报（自然科学版）2007，Vol.41Issue(1)：55-59,5.
基于四阶累积量的MIMO信道及其相关性的联合估计
Joint estimation of MIMO channel and correlation based on the forth order cumulant
摘要
Abstract
Up to be the concept of multiple-input multiple-output(MIMO) system has drawn a lot of attention, up to be listed as a potential improvement of mobile communication systems in standardization forums. Channel state information has to be estimated for diversity combining or space-time decoding. Former work on channel estimation always under the assumption that MIMO channels are independent and identically distributed (i. i. d. ). Actually, there exists spatial correlation among channels corresponding to different pairs of transmit and receive antennas. Otherwise, we can make use of this spatial correlation to improve the performance of chosen antenna, adaptive modulation,adaptive power location and so on. In the former work, the channel correlation matrix which was hard to observe in practice environment was given directly. In this paper, we estimate the MIMO channel using the forth order cumulant and simultaneity estimate the spatial correlation matrix.关键词
四阶累积量/MIMO信道估计/相关性估计Key words
forth order cumulant/MIMO channel estimation/correlation estimation分类
信息技术与安全科学引用本文复制引用
谢凌,谢文武,刘守印..基于四阶累积量的MIMO信道及其相关性的联合估计[J].华中师范大学学报（自然科学版）,2007,41(1):55-59,5.基金项目
The National Natural Science Foundation of China (60572117) （60572117）
The Natural Science Foundation of Hubei Province (2005ABA244). （2005ABA244）
