Joint estimation of carrier frequency offset, dc offset and I/Q imbalance for OFDM systems

被引：10

作者：

Liu, Tao ^{[1
]}

Li, Hanzhang ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Commun Engn, Sch Informat Engn, Beijing 100083, Peoples R China

[2] China Mobile Grp Shandong Co Ltd, Jinan 250100, Peoples R China

来源：

SIGNAL PROCESSING | 2011年 / 91卷 / 05期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Blind estimation; Carrier frequency offset (CFO); Dc offset (DCO); In-phase/quadrature (I/Q) imbalance; Orthogonal frequency division multiplexing (OFDM);

D O I：

10.1016/j.sigpro.2010.12.002

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：

Orthogonal frequency division multiplexing (OFDM) systems with direct-conversion receiver (DCR) are vulnerable to carrier frequency offset (CFO), dc offset (DCO) and inphase/quadrature (I/Q) imbalance. In this paper, we propose blind estimator for joint estimation of CFO, DCO and I/Q imbalance in OFDM systems with OCR. Simulation results show that performance of proposed estimator approaches Cramer-Rao lower bound (CRLB) asymptotically, which demonstrates its effectiveness. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1329 / 1333

页数：5

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