Diversity Effect of OFDM Communication with IQ Imbalance in the Rayleigh Fading Channel

Author

Ryu, Heung-Gyoon

Author_Institution

Dept. of Electron. Eng., Chungbuk Nat. Univ., Cheongju, South Korea

fYear

2010

fDate

26-28 Feb. 2010

Firstpage

489

Lastpage

493

Abstract

Orthogonal frequency division multiplexing (OFDM) has been used widely in several communication systems. However, OFDM is very sensitive to the radio frequency (RF) impairments. One of the serious major impairments is the IQ imbalance between In-phase (I) and Quadrature (Q) branches. This IQ imbalance can be the mail reason of bit error rate (BER) performance degradation in the high-speed OFDM communication system. In this paper, the closed form of BER of OFDM with IQ imbalance is derived in the Rayleigh fading channel and novelly investigates the effect of transmit and receive diversity on this OFDM communication system with Q imbalance in the Rayleigh fading channel. Via the computer simulation, it is verified that analytical result is very close to simulation result. So, it is very useful and convenient to evaluate the BER performance of multi-input multi-output (MIMO) system with IQ imbalance in the Rayleigh fading environment.

Keywords

MIMO communication; OFDM modulation; Rayleigh channels; error statistics; IQ imbalance; MIMO system; OFDM communication; Rayleigh fading channel; bit error rate; diversity effect; multiinput multioutput system; orthogonal frequency division multiplexing; radio frequency impairments; Analytical models; Bit error rate; Computational modeling; Computer simulation; Degradation; Fading; MIMO; OFDM; Postal services; Radio frequency; IQ imbalance; OFDM; Rayleigh fading and MIMO diversity;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Software and Networks, 2010. ICCSN '10. Second International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-5726-7

Electronic_ISBN

978-1-4244-5727-4

Type

conf

DOI

10.1109/ICCSN.2010.78

Filename

5437715