Robust Power Control for Amplify-and-Forward Relaying Scheme

Author

Zhixin Liu ; Huanhuan Yuan ; Hongxiang Li ; Xinping Guan ; Hongjiu Yang

Author_Institution

Inst. of Electr. Eng., Yanshan Univ., Qinhuangdao, China

Volume

19

Issue

2

fYear

2015

fDate

Feb. 2015

Firstpage

263

Lastpage

266

Abstract

Power control problem is investigated for amplify-and-forward cellular relay network in this letter. Since the wireless channels vary with time, we aim at a power allocation scheme that is robust to the fluctuations. An optimization problem is formulated which targets at utility maximization subject to a pre-defined outage probability threshold and limited power at relay station. With that, a distributed iterative algorithm is proposed to obtain the optimal power. Numerical results show the effectiveness of the algorithm, and also present the robustness of this system.

Keywords

amplify and forward communication; cellular radio; iterative methods; optimisation; power control; probability; relay networks (telecommunication); robust control; telecommunication control; wireless channels; amplify-and-forward cellular relay network; distributed iterative algorithm; optimization problem; outage probability threshold; power allocation scheme; relay station; robust power control; utility maximization; wireless channels; Fading; Optimization; Power control; Relay networks (telecommunications); Resource management; Robustness; Power control; amplify-and-forward; amplify-and-forward (AF); robust distributed algorithm; utility maximization;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2379718

Filename

6987233