Analytical BER Performance of M-QAM-OFDM Systems in the Presence of IQ Imbalance

Author

Zareian, Hassan ; Vakili, Vahid TabaTaba

Author_Institution

Iran Univ. of Sci. & Technol., Tehran

fYear

2007

fDate

2-4 July 2007

Firstpage

1

Lastpage

5

Abstract

It is well known that the performance of OFDM systems is severely affected by the inphase and quadraure (IQ) imbalances of down converter modulators in receivers. In this paper, the effects of IQ imbalance on the performance of the OFDM systems with rectangular M-QAM constellations are investigated and a closed form of bit error rate (BER) of these systems in additive white Gaussian noise (AWGN) channels is derived. Theoretical results show perfect matching with those obtained by simulations and they can be used to derive the OFDM system performance, without the need to run extensive simulations.

Keywords

OFDM modulation; error statistics; quadrature amplitude modulation; AWGN channels; BER; IQ Imbalance; M-QAM-OFDM systems; additive white Gaussian noise channels; bit error rate; down converter modulators; inphase and quadraure imbalances; AWGN; Baseband; Bit error rate; Digital audio broadcasting; Digital video broadcasting; Fading; OFDM modulation; Performance analysis; System performance; Wireless LAN; BER Performance; IQ imbalance; M-QAM modulation; OFDM; theoretical anallysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Networks, 2007. WOCN '07. IFIP International Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-1005-3

Electronic_ISBN

1-4244-1005-3

Type

conf

DOI

10.1109/WOCN.2007.4284141

Filename

4284141