Large penalty of hybrid diversity with uncoded modulation in slow rayleigh fading

Author

Haghani, Sasan ; Beaulieu, Norman C. ; Win, Moe Z.

Author_Institution

Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta.

Volume

5

Issue

9

fYear

2006

fDate

9/1/2006 12:00:00 AM

Firstpage

2363

Lastpage

2368

Abstract

In hybrid selection/maximal ratio combining (H-S/MRC) the receiver selects the L branches with the largest signal-to-noise ratios (SNRs) from N available diversity branches and performs maximal ratio combining (MRC). A penalty is incurred with respect to MRC which can be defined as the increase in SNR required for H-S/MRC to achieve the same symbol error probability as MRC. Recently, this penalty was investigated specifically for two-dimensional modulations. In this paper, we derive the asymptotic SNR penalties in slow Rayleigh fading for small and large values of SNR for general uncoded signaling constellations

Keywords

Rayleigh channels; diversity reception; error statistics; modulation; asymptotic SNR penalties; diversity branches; general uncoded signaling constellations; hybrid diversity; hybrid selection-maximal ratio combining; large penalty; signal-to-noise ratio; slow Rayleigh fading; symbol error probability; two-dimensional modulations; uncoded modulation; Constellation diagram; Diversity reception; Error probability; Fading; Laboratories; Modulation; Phase shift keying; Rayleigh channels; Signal to noise ratio; Upper bound;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2006.1687759

Filename

1687759