The effect of I/Q Imbalances in OFDM systems with MPSK modulation over AWGN channel

Author

Cho, Kyongkuk ; Lee, Jaeyoon ; Yoon, Dongweon ; Park, Sang Kyu ; Kim, Sanggoo

Author_Institution

Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul, South Korea

fYear

2008

fDate

19-21 Nov. 2008

Firstpage

647

Lastpage

650

Abstract

In an orthogonal frequency division multiplexing (OFDM) system, in-phase and quadrature (I/Q) imbalances generated in the analog front-end introduce inter-channel interference (ICI) and, consequently, error performance degradation. In this paper, a general and exact expression involving the two-dimensional (2-D) Gaussian Q-function for symbol error probability of MPSK-OFDM signal with I/Q imbalances is provided. The effect of I/Q imbalances on the error performance and the distribution of an additive white Gaussian noise (AWGN) on the signal constellation are also exactly analyzed.

Keywords

AWGN channels; OFDM modulation; phase shift keying; 2D Gaussian Q-function; AWGN channel; I/Q imbalances; MPSK modulation; MPSK-OFDM signal; OFDM systems; additive white Gaussian noise; inter-channel interference; orthogonal frequency division multiplexing system; symbol error probability; AWGN channels; Additive white noise; Constellation diagram; Degradation; Error probability; Interchannel interference; OFDM modulation; Performance analysis; Signal analysis; Two dimensional displays; I/Q imbalances; MPSK; OFDM; Symbol error probability;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-2423-8

Electronic_ISBN

978-1-4244-2424-5

Type

conf

DOI

10.1109/ICCS.2008.4737265

Filename

4737265