A simple IQ imbalance compensation scheme for OFDM systems

Author

Yang, Hyun ; Shim, Eu-Suk ; Song, Hyoung-Kyu ; You, Young-Hwan ; Jeong, Kwang-Soo ; Yi, Jae-Hoon

Author_Institution

uT Commun. Res. Inst., Sejong Univ., Seoul

fYear

2008

fDate

14-16 Oct. 2008

Firstpage

1

Lastpage

3

Abstract

This paper is concerned with a simple in-phase and quadrature-phase (IQ) imbalance compensation scheme using a single pilot symbol in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme can estimate the IQ imbalance factors with pilot subcarriers of an OFDM symbol while existing method requires more OFDM symbols. Also, the proposed method is computationally efficient and has a better performance than the conventional method over a flat fading channel. Performance of the proposed method is compared to the conventional method via computer simulation in terms of bit error rate (BER).

Keywords

OFDM modulation; compensation; error statistics; fading channels; BER; IQ imbalance compensation scheme; OFDM systems; bit error rate; flat fading channel; in-phase and quadrature-phase imbalance compensation scheme; orthogonal frequency division multiplexing systems; single pilot symbol; AWGN; Binary phase shift keying; Binary sequences; Bit error rate; Computer simulation; Degradation; Fading; Frequency domain analysis; OFDM modulation; Radio frequency; IQ imbalance compensation; OFDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2008. APCC 2008. 14th Asia-Pacific Conference on

Conference_Location

Tokyo

Print_ISBN

978-4-88552-232-1

Electronic_ISBN

978-4-88552-231-4

Type

conf

Filename

4773825