Carrier-frequency offset estimation via the EM algorithm for MIMO-OFDM iterative receivers

被引：0
|
作者：
Salari, S. [1 ]
Ahmadian, M. [1 ]
Ardebilipour, M. [1 ]
Meghdadi, V. [2 ]
Cances, J. P. [2 ]
机构：
[1] KN Toosi Univ Technol, Tehran, Iran
[2] Univ Limoges, ENSIL, F-87065 Limoges, France
来源：
CNSR 2007: PROCEEDINGS OF THE FIFTH ANNUAL CONFERENCE ON COMMUNICATION NETWORKS AND SERVICES RESEARCH | 2007年
关键词：
D O I：
暂无
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 carrier-frequency offset (CFO) estimation issue in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system using low-density parity-check (LDPC) codes at transmitter and iterative detection based on the maximum a posteriori expectation-maximization (MAP-EM demodulator and a soft LDPC decoder at receiver. Based on the EM algorithm, we first present a novel pilot-aided CFO estimator that allows fast Fourier-transform (FFT)-based fast implementation. Then this CFO estimator is incorporated into the initialization step of the iterative receiver. Experimental results show the effectiveness of our receiver design in combating CFO.
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页码：101 / +
页数：2
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