Performance analysis of AF cooperative systems with HPA nonlinearity in semi-blind relays

Author

Jian Qi ; Aissa, Sonia ; Alouini, Mohamed-Slim

Author_Institution

King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia

fYear

2012

fDate

3-7 Dec. 2012

Firstpage

4182

Lastpage

4186

Abstract

In this paper, dual-hop amplify-and-forward (AF) cooperative systems in the presence of high-power amplifier (HPA) nonlinearity at semi-blind relays, are investigated. Based on the modified AF cooperative system model taking into account the HPA nonlinearity, the expression for the output signal-to-noise ratio (SNR) at the destination node is derived, where the interference due to both the AF relaying mechanism and the HPA nonlinearity is characterized. The performance of the AF cooperative system under study is evaluated in terms of average symbol error probability (SEP), which is derived using the moment-generating function (MGF) approach, considering transmissions over Nakagami-m fading channels. Numerical results are provided and show the effects of some system parameters, such as the HPA parameters, numbers of relays, quadrature amplitude modulation (QAM) order, Nakagami parameters, on performance.

Keywords

Nakagami channels; amplify and forward communication; cooperative communication; error statistics; interference suppression; power amplifiers; quadrature amplitude modulation; relay networks (telecommunication); AF cooperative system; HPA nonlinearity; MGF; Nakagami parameter; Nakagami-m fading channel; SEP; amplify and forward communication; destination node; high power amplifier; interference suppression; moment generating function; performance analysis; quadrature amplitude modulation; semiblind relay; signal to noise ratio; symbol error probability;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Communications Conference (GLOBECOM), 2012 IEEE

Conference_Location

Anaheim, CA

ISSN

1930-529X

Print_ISBN

978-1-4673-0920-2

Electronic_ISBN

1930-529X

Type

conf

DOI

10.1109/GLOCOM.2012.6503773

Filename

6503773