Decision-Directed Channel Estimation and High I/Q Imbalance Compensation in OFDM Receivers

被引：16

作者：

Traverso, Sylvain ^{[1
]}

Ariaudo, Myriam ^{[2
]}

Fijalkow, Inbar ^{[2
]}

Gautier, Jean-Luc ^{[2
]}

Lereau, Christian ^{[3
]}

机构：

[1] THALES Land & Joint Syst, Dept Embedded Digital Syst, FR-92704 Colombes, France

[2] Univ Cergy, CNRS, ETIS ENSEA, FR-95014 Cergy, France

[3] THALES Land & Joint Syst, Dept Unite Commun Tact, FR-49309 Chollet, France

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2009年 / 57卷 / 05期

关键词：

I/Q imbalance; Orthogonal Frequency Division Multiplexing (OFDM); zero-IF; equalization;

D O I：

10.1109/TCOMM.2009.05.070161

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：

Direct-conversion architectures suffer from the mismatch between the In-phase (I) and the Quadrature-phase (Q) branches, commonly called I/Q imbalance. Even low I/Q imbalances imply poor performance of Orthogonal Frequency Division Multiplexing (OFDM) systems. In this paper, we propose a new algorithm that uses both training and data symbols in a decision-directed fashion to jointly estimate the channel and compensate for high receiver I/Q imbalance. Simulation results show that our method can compensate for high I/Q imbalance values and also estimate a frequency selective channel.

引用

页码：1246 / 1249

页数：4

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