A multi-relay-selection scheme with cyclic delay diversity

Author

Qiang Li ; Qing Yan ; Teh, Kah Chan ; Li, K.H. ; Yongxu Hu

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

17

Issue

2

fYear

2013

fDate

Feb-13

Firstpage

349

Lastpage

352

Abstract

In our proposed multi-relay-selection scheme with cyclic delay diversity (CDD), relays with spectral efficiency above a threshold are chosen to forward information, and a distinct cyclic shift is assigned to each selected relay. We derive an approximate expression of the end-to-end mutual information for the proposed scheme. We further analyze the outage probability and diversity-multiplexing tradeoff (DMT) performance. Numerical results show that the proposed scheme can realize full diversity and achieve the same outage probability and DMT performance as that of the selection cooperation scheme without the need for feedback information and strict synchronization among relays.

Keywords

cooperative communication; diversity reception; error statistics; numerical analysis; CDD; DMT performance; cyclic delay diversity; distinct cyclic shift; diversity-multiplexing tradeoff performance; end-to-end mutual information; multirelay-selection scheme; outage probability; selection cooperation scheme; spectral efficiency; Approximation methods; Decoding; Delay; Mutual information; Relays; Signal to noise ratio; Synchronization; Cyclic delay diversity; diversity-multiplexing tradeoff (DMT); multi-relay selection; outage probability;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.121912.122493

Filename

6400350