EM-based joint ML estimation of carrier frequency offset and channel coefficients in MIMO-OFDM systems

被引：0
作者：
Salari, S. [1 ]
Ardebilipour, M. [1 ]
Ahmadian, M. [1 ]
Meghdadi, V. [2 ]
Cances, J. P. [2 ]
机构：
[1] KN Toosi Univ Technol, Tehran, Iran
[2] Univ Limoges, Xlim C2S2, F-87065 Limoges, France
来源：
2007 IEEE 18TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-9 | 2007年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we propose a new scheme for joint maximum-likelihood (ML) estimation of carrier-frequency offset (CFO) and channel coefficients in multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. To reduce the prohibitive computational complexity of joint ML estimation problems, the expectation-maximization (END algorithm is employed. Moreover, the Cramer-Rao bounds (CRB) for both CFO and channel estimators are developed to evaluate the performance of the proposed scheme. Computer simulations show that the proposed algorithm achieves almost ideal performance compared with the CRB for both channel and frequency offset estimations.
引用
收藏
页码：1378 / +
页数：3
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