DocumentCode :
1950453
Title :
Simultaneous information and power transfer in MISO interference systems
Author :
Khandaker, Muhammad R. A. ; Kai-Kit Wong
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, London, UK
fYear :
2015
fDate :
12-15 July 2015
Firstpage :
596
Lastpage :
600
Abstract :
This paper considers simultaneous wireless information and power transfer (SWIPT) in multiple-input single-output (MISO) interference systems in presence of energy harvesting nodes. We investigate the interference temperature minimization problem while satisfying signal-to-interference-and-noise ratio (SINR) and energy harvesting thresholds at the information and energy receivers, respectively. The objective is to improve the received SINR as well as to reduce cross-link information leakage in order to improve physical-layer security. The formulation leads to a non-convex problem which we solve using semidefinite relaxation (SDR) technique. A rank-constrained optimization algorithm is proposed and a rank reduction procedure is developed in order to achieve a lower rank solution. Interestingly, we show that the SDR is in fact tight and an optimal rank-one solution can be developed in certain scenarios. Numerical simulations are performed to demonstrate the effectiveness of the proposed algorithm.
Keywords :
concave programming; energy harvesting; minimisation; numerical analysis; radio receivers; radiofrequency interference; radiofrequency power transmission; telecommunication power management; telecommunication security; MISO interference system; SDR technique; SINR; SINR improvement; SWIPT; cross-link information leakage reduction; energy harvesting node; energy harvesting threshold; energy receiver; information receiver; interference temperature minimization problem; multiple input single output interference system; nonconvex problem; numerical simulation; physical layer security improvement; rank reduction procedure; rank-constrained optimization algorithm; semidefinite relaxation technique; signal-to-interference-and-noise ratio; simultaneous wireless information and power transfer; Array signal processing; Energy harvesting; Interference; Receivers; Signal to noise ratio; Transmitters; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal and Information Processing (ChinaSIP), 2015 IEEE China Summit and International Conference on
Conference_Location :
Chengdu
Type :
conf
DOI :
10.1109/ChinaSIP.2015.7230473
Filename :
7230473
Link To Document :
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