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.
引用
收藏
页码：101 / +
页数：2
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