Data-aided approach to I/Q mismatch and DC offset compensation in communication receivers

Author

Sohn, Il-Hyun ; Jeong, Eui-Rim ; Lee, Yong H.

Author_Institution

Div. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejon, South Korea

Volume

6

Issue

12

fYear

2002

Firstpage

547

Lastpage

549

Abstract

A digital signal processing technique for compensating both the I/Q mismatch and the DC offset in communication receivers is derived with an emphasis on direct-conversion architectures. The I/Q mismatch and DC offset are estimated in a least-squares sense using a training sequence. Also, a group of training sequences that minimizes the mean square error of the estimate is determined. The advantages of the proposed technique are demonstrated through computer simulation.

Keywords

mean square error methods; radio receivers; signal processing; DC offset compensation; DC offset estimation; I/Q mismatch; MSE; RF signal; communication receivers; computer simulation; data-aided approach; direct-conversion architectures; frequency-selective channel; least-squares; mean square error; quadrature mixing; training sequences; AWGN; Adaptive filters; Additive white noise; Computer architecture; Computer simulation; Digital signal processing; Discrete Fourier transforms; Frequency estimation; Mean square error methods; Passband;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2002.806451

Filename

1134140