[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5909/JBE.2015.20.2.215

Optimal Harvesting Time Allocation Scheme for Maximizing Throughput in Wireless Cognitive Relay Network with Secondary Energy Harvesting Relay

Im, Gyeongrae (Department of Electrical and Computer Engineering and INMC, Seoul National Univ.)
Lee, Jae Hong (Department of Electrical and Computer Engineering and INMC, Seoul National Univ.)

Publication Information

Journal of Broadcast Engineering / v.20, no.2, 2015 , pp. 215-223 More about this Journal

Abstract

Energy harvesting technique is an energy charging technique for communication device in energy-constrained environment. Recently, energy harvesting technique that harvests energy from wireless radio frequency signal is proposed. Representatively, there are time switching technique and power splitting technique. This paper proposes an optimal harvesting time allocation scheme in a wireless cognitive relay network when secondary user relay uses energy harvesting technique to transmit information. Secondary user relay receives information and energy simultaneously from the secondary user source's signal via time switching technique. We aim to maximize the instantaneous throughput by optimizing harvesting time of the secondary user relay. Simulation results show that using optimized harvesting time gets larger instantaneous throughput compared to using constant harvesting time.

Keywords

Energy harvesting; time switching; cognitive radio; amplify-and-forward relaying;

Citations & Related Records

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