Joint carrier-frequency offset and channel estimation for MIMO-OFDM transmission

被引：5
|
作者：
Salari, S. [1 ]
Ardebilipour, M. [1 ]
Ahmadian, M. [1 ]
机构：
[1] KN Toosi Univ Technol, Fac Elect Engn, Tehran, Iran
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2008年 / 47卷 / 02期
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：
10.1007/s11277-008-9466-5
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
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：12
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