Joint Carrier-Frequency Offset and Channel Estimation for MIMO-OFDM Transmission

被引：0
作者：
S. Salari
M. Ardebilipour
M. Ahmadian
机构：
[1] K.N.Toosi University of Technology,Faculty of Electrical Engineering
来源：
Wireless Personal Communications | 2008年 / 47卷
关键词：
Carrier-frequency offset (CFO); Channel estimation; Cramer-Rao bound (CRB); Expectation–maximization (EM); Multiple-input Multiple-output (MIMO); Orthogonal frequency-division multiplexing (OFDM);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, we consider a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system operating over frequency-selective fading channels. We propose a novel scheme for joint carrier-frequency offset (CFO) and channel estimation based on the expectation–maximization (EM) algorithm. Furthermore, the Cramer-Rao bounds (CRBs) for both CFO and channel estimators are exploited to evaluate the performance of the proposed scheme. Computer simulations show that the proposed algorithm achieves almost ideal performance compared with the CRBs for both channel and frequency offset estimations.
引用
收藏
页码：303 / 314
页数：11
相关论文
共 44 条
[1]  
Stuber G.L.(2004)Broadband MIMO-OFDM wireless communications IEEE Proceedings, 92 271-294
[2]  
Mclaughlin S.W.(2002)MIMO-OFDM for wireless communications, signal detection with enhanced channel estimation IEEE Transactions on Communications, 50 1471-1477
[3]  
Li Y.(2002)On the capacity of OFDM based spatial multiplexing systems IEEE Transactions on Communications, 50 225-234
[4]  
Ingram M.(2005)EM-based iterative receiver design with carrier frequency offset estimation for MIMO OFDM systems IEEE Transactions on Communications, 53 581-586
[5]  
Pratt T.G.(2005)A MIMO-OFDM channel estimation approach using time of arrivals IEEE Transactions on Wireless Communications, 4 1207-1213
[6]  
Li Y.(2006)Optimal training signals for MIMO-OFDM channel estimation IEEE Transactions on Wireless Communications, 5 1158-1168
[7]  
Winters J.H.(2006)Maximum likelihood synchronization and channel estimation for OFDMA uplink transmissions IEEE Transactions on Communications, 54 726-736
[8]  
Sollenberger N.R.(2005)Hopping pilots for estimation of frequency-offset and multiantenna channels in MIMO-OFDM IEEE Transactions on Communications, 53 162-172
[9]  
Bolckei H.(2006)Joint carrier frequency synchronization and channel Estimation for OFDM systems via the EM algorithm IEEE Transactions on Vehicular Technology, 55 167-172
[10]  
Gesbert D.(1996)The expectation-maximization algorithm IEEE Signal Processing Magazine, 13 47-60
12345