Analysis and optimization of switched diversity systems

Author

Ko, Young-Chai ; Alouini, Mohamed-Slim ; Simon, Marvin K.

Author_Institution

Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA

Volume

49

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

1813

Lastpage

1831

Abstract

We evaluate and optimize the performance of switch and stay diversity systems which have the advantage of offering one of the least complex solutions to mitigating the effect of fading. We study the impact of fading type and severity, unbalanced branches, fading correlation, and imperfect channel estimation on the performance of these systems, and compare this performance with that of more complex diversity schemes such as maximal-ratio combining and selection combining. We also propose, analyze, and optimize the performance of a generalized switched diversity scheme. In summary, the presented results offer a simple, generic, and useful analytical tool for the accurate performance evaluation and optimization of switched diversity systems

Keywords

correlation methods; diversity reception; fading channels; modulation; multipath channels; optimisation; M-ary digital modulation; fading correlation; fading severity; generalized switched diversity; i.i.d. branches; imperfect channel estimation; independent identically distributed branches; maximal-ratio combining; multipath fading; performance evaluation; selection combining; switched diversity systems; unbalanced branches; Bit error rate; Channel estimation; Channel state information; Communication switching; Diversity methods; Diversity reception; Fading; Performance analysis; Quadrature amplitude modulation; Switches;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.892586

Filename

892586