Generalized BER Analysis of QAM and Its Application to MRC Under Imperfect CSI and Interference in Ricean Fading Channels

Author

López-Martínez, F. Javier ; Martos-Naya, Eduardo ; Paris, José F. ; Fernández-Plazaola, Unai

Author_Institution

Dept. Ing. de Comun., Univ. de Malaga, Malaga, Spain

Volume

59

Issue

5

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

2598

Lastpage

2604

Abstract

A general framework for the bit error rate (BER) analysis of quadrature amplitude modulation (QAM) systems is presented. This analysis is valid for any QAM system with independent bit mapping for in-phase and quadrature components and includes previous analyses in the literature as particular cases. We use this methodology to analyze BER in maximal ratio combining (MRC) systems with channel estimation errors in Ricean fading channels with Ricean-faded interference. An exact closed-form expression for the BER is obtained in this scenario, as well as an accurate simplified expression when perfect channel estimation is assumed, for the common case of Rayleigh-faded interference.

Keywords

Rician channels; channel estimation; diversity reception; error statistics; quadrature amplitude modulation; radiofrequency interference; BER analysis; CSI; MRC; QAM; Ricean fading channels; Ricean fading interference; bit error rate; channel estimation errors; maximal ratio combining systems; quadrature amplitude modulation; Bit error probability; Ricean fading; Ricean interference; independent mapping; maximal ratio combining (MRC); quadrature amplitude modulation (QAM);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2010.2042740

Filename

5415562