EM-based semi-blind channel estimation method for MIMO-OFDM communication systems

被引：7
|
作者：
Obradovic, D. [1 ]
Na, C. [1 ]
Scheiterer, R. Lupas [1 ]
Szabo, A. [1 ]
机构：
[1] Siemens AG, Corp Technol Informat & Commun, Munich, Germany
来源：
NEUROCOMPUTING | 2008年 / 71卷 / 10-12期
关键词：
semi-blind channel estimation; MIMO-OFDM; expectation maximization;
D O I：
10.1016/j.neucom.2007.08.031
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
This paper presents a novel semi-blind method for channel estimation and symbol detection in multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) digital communication systems over time-varying channels where the standard pilot-aided channel estimation (PACE) interpolation approaches are not directly applicable due to insufficient placement of pilot sequences over the frequency sub-channels. The presented channel estimation method utilizes the Expectation Maximization (EM) algorithm to exploit the information in the received signals and the statistical properties of the channel. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2388 / 2398
页数：11
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