Effects of CSI on ASEP Based Opportunistic DF Relaying Systems

Author

Cui, Haixia ; Wei, Gang ; Wang, Yide

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China

Volume

60

Issue

4

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

1898

Lastpage

1904

Abstract

This paper addresses issues on the assessment of the performance degradation caused by decreasing channel state information (CSI) of cooperative communication systems that employ opportunistic decode-and-forward (DF) relay under Nakagami-m fading conditions. Exact closed-form performance expressions are derived for the end-to-end average symbol error probability (ASEP) for both partial- and full-CSI relaying schemes over a sufficiently wide range of signal-to-noise ratio (SNR) regions. Finally, the performances of the two schemes in terms of ASEP are compared, and the system performance degradation caused by decreasing CSI is investigated through both analysis and simulations.

Keywords

Nakagami channels; cooperative communication; decode and forward communication; error statistics; Nakagami-m fading conditions; channel state information; cooperative communication systems; end-to-end average symbol error probability; full-CSI relaying; opportunistic decode-and-forward relay; partial-CSI relaying schemes; signal-to-noise ratio regions; Analytical models; Closed-form solution; Decoding; Fading; Modulation; Relays; Signal to noise ratio; Channel state information (CSI); decode and forward (DF); error performance; opportunistic relaying; outage probability;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2011.2131694

Filename

5738355