Performance of diversity receivers in generalised gamma fading channels

Author

Aalo, V.A. ; Efthymoglou, G.P. ; Piboongungon, T. ; Iskander, C.D.

Author_Institution

Dept. of Electr. Eng., Florida Atlantic Univ., Boca Raton, FL

Volume

1

Issue

3

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

341

Lastpage

347

Abstract

The performance of M-ary modulation schemes operating in a generalised gamma fading environment in the presence of additive white Gaussian noise is studied. The multipath fading channel is modelled by the three-parameter generalised gamma distribution, which includes the Rayleigh, Nakagami and Weibull distributions as special cases and the log-normal distribution as a limiting case. The Suzuki distribution can also be adequately approximated by the generalised gamma distribution. The performances of the selection combining (SC), equal gain combining (EGC) and maximal ratio combining (MRC) diversity schemes are considered. Specifically, the exact average symbol error rates (ASER) for coherent multilevel modulation schemes with SC and MRC are derived using the moment generating function-based approach, while the ASER of EGC is obtained by employing the characteristic function-based approach. The analytical results are validated by computer simulation

Keywords

AWGN; diversity reception; fading channels; modulation; radio receivers; M-ary modulation schemes; Nakagami distributions; Rayleigh distributions; Suzuki distribution; Weibull distributions; additive white Gaussian noise; average symbol error rates; characteristic function-based approach; coherent multilevel modulation schemes; diversity receivers; equal gain combining; generalised gamma fading channels; log-normal distribution; maximal ratio combining; moment generating function-based approach; multipath channel; selection combining; three-parameter generalised gamma distribution;

fLanguage

English

Journal_Title

Communications, IET

Publisher

iet

ISSN

1751-8628

Type

jour

DOI

10.1049/iet-com:20050235

Filename

4247315