Improved joint compensation scheme of transmitter and receiver IQ imbalances in OFDM systems

Author

Yan, Liang ; Feng, Shu ; Xiajie, Shi ; Haiqiang, Fan ; Stevan, Berber ; Jinhui, Lu

Author_Institution

Inst. of Wireless Commun. & Sensor Network, Nanjing Univ. of Sci. & Technol., Nanjing, China

fYear

2011

fDate

9-11 Nov. 2011

Firstpage

1

Lastpage

4

Abstract

The in-phase and quadrature-phase (IQ) imbalances can be present at both the transmitter and receiver in OFDM systems and lead to system performance degradation. An improved LS based joint channel and IQ imbalance estimation scheme is proposed. Simulations show that the improved scheme with only two training symbols per frame could achieve better BER performance than the original LS compensation scheme using up to 32 training symbols per frame.

Keywords

OFDM modulation; channel estimation; error statistics; least squares approximations; BER performance; LS compensation scheme; LS-based joint channel-IQ imbalance estimation scheme; OFDM systems; improved joint compensation scheme; inphase-quadrature-phase imbalances; orthogonal frequency division multiplexing; system performance degradation; transmitter-receiver IQ imbalance; Bit error rate; Estimation; Joints; OFDM; Receivers; Training; Transmitters; IQ imbalance; OFDM; least squares (LS) estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Signal Processing (WCSP), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4577-1009-4

Electronic_ISBN

978-1-4577-1008-7

Type

conf

DOI

10.1109/WCSP.2011.6096691

Filename

6096691