Blind carrier frequency offset estimation in SISO, MIMO, and multiuser OFDM systems

被引：228

作者：

Yao, YW ^{[1
]}

Giannakis, GB ^{[1
]}

机构：

[1] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 USA

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2005年 / 53卷 / 01期

关键词：

carrier frequency offset (CFO); kurtosis; multi-input multi-output orthogonal frequency-division multiplexing (MIMO-OFDM); multiuser OFDM; orthogonal frequency-division multiplexing (OFDM);

D O I：

10.1109/TCOMM.2004.840623

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：

Relying on a kurtosis-type criterion, we develop a low-complexity blind carrier frequency offset (CFO) estimator for orthogonal frequency-division multiplexing (OFDM) systems. We demonstrate analytically how identifiability and performance of this blind CFO estimator depend on the channel's frequency selectivity and the input distribution. We show that this approach can be applied to blind CFO estimation in multi-input multi-output and multiuser OFDM systems. The issues of channel nulls, multiuser interference, and effects of multiple antennas are addressed analytically, and tested via simulations.

引用

页码：173 / 183

页数：11

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