Title :
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
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;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2014.2379718
