Decision-feedback detection for block differential space-time modulation

Author

Du, Zheng ; Beaulieu, Norman C.

Author_Institution

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

Volume

54

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

900

Lastpage

910

Abstract

Time variation on fading channels hinders accurate channel estimation in differential space-time modulation and deteriorates the performance. Decision-feedback differential detection is studied for block differential space-time modulation, and compared with conventional differential space-time modulation. It is observed that the proposed scheme does not suffer effective fading bandwidth expansion, as does the conventional scheme. An improved effective signal-to-noise ratio approach is proposed for analyzing the performance of the proposed scheme in time-varying flat Rayleigh fading. Theoretical analysis and simulations show the improved performance of the proposed scheme over the conventional scheme.

Keywords

Rayleigh channels; channel estimation; modulation; time-varying channels; block differential space-time modulation; channel estimation; decision-feedback detection; differential detection; fading bandwidth expansion; fading channels; signal-to-noise ratio; time-varying flat Rayleigh fading; Bandwidth; Channel estimation; Fading; Performance analysis; Rayleigh channels; Signal to noise ratio; System performance; Time-varying channels; Transmitters; Transmitting antennas; Differential modulation; Doppler; diversity; fading channels; space–time; transmitter antenna;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2006.873983

Filename

1632104