Low complexity IQ imbalance estimation in the presence of a carrier frequency offset for OFDM receivers

Author

Traverso, Sylvain ; Ariaudo, Myriam ; Fijalkow, Inbar ; Gautier, Jean-Luc

Author_Institution

Thales Commun., Colombes, France

fYear

2009

fDate

21-24 June 2009

Firstpage

628

Lastpage

632

Abstract

We propose a new algorithm for the IQ imbalance estimation and equalization of an Orthogonal Frequency Division Multiplexing (OFDM) system in the presence of a Carrier Frequency Offset (CFO) and of a dense multipath environment. Our algorithm has a low complexity and needs a single pilot symbol. Through numerical simulation and in the context of quick estimations of front-end non-idealities, our algorithm is shown to outperform conventional approaches for sensible values of IQ imbalance and CFO.

Keywords

OFDM modulation; numerical analysis; radio receivers; IQ imbalance estimation; OFDM receivers; carrier frequency offset; numerical simulation; orthogonal frequency division multiplexing system; Baseband; Degradation; Demodulation; Discrete Fourier transforms; Frequency estimation; Interference; Numerical simulation; OFDM; WiMAX; Wireless communication; Carrier Frequency Offset; IQ imbalance; Orthogonal Frequency Division Multiplexing (OFDM);

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2009. SPAWC '09. IEEE 10th Workshop on

Conference_Location

Perugia

Print_ISBN

978-1-4244-3695-8

Electronic_ISBN

978-1-4244-3696-5

Type

conf

DOI

10.1109/SPAWC.2009.5161861

Filename

5161861