TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Outage Analysis and Optimization for Time Switching-based Two-Way Relaying with Energy Harvesting Relay Node |
| 영문제목(English Title) |
Outage Analysis and Optimization for Time Switching-based Two-Way Relaying with Energy Harvesting Relay Node |
| 저자(Author) |
Guanyao Du
Ke Xiong
Yu Zhang
Zhengding Qiu
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| 원문수록처(Citation) |
VOL 09 NO. 02 PP. 0545 ~ 0563 (2015. 02) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Energy harvesting (EH) and network coding (NC) have emerged as two promising technologies for future wireless networks. In this paper, we combine them together in a single system and then present a time switching-based network coding relaying (TSNCR) protocol for the two-way relay system, where an energy constrained relay harvests energy from the transmitted radio frequency (RF) signals from two sources, and then helps the two-way relay information exchange between the two sources with the consumption of the harvested energy. To evaluate the system performance, we derive an explicit expression of the outage probability for the proposed TSNCR protocol. In order to explore the system performance limit, we formulate an optimization problem to minimize the system outage probability. Since the problem is non-convex and cannot be directly solved, we design a genetic algorithm (GA)-based optimization algorithm for it. Numerical results validate our theoretical analysis and show that in such an EH two-way relay system, if NC is applied, the system outage probability can be greatly decreased. Moreover, it is shown that the relay position greatly affects the system performance of TSNCR, where relatively worse outage performance is achieved when the relay is placed in the middle of the two sources. This is the first time to observe such a phenomena in EH two-way relay systems.
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| 키워드(Keyword) |
Energy harvesting
network coding (NC)
two-way relay network
outage probability
GA-based optimization
simultaneous wireless information
and energy transfer (SWIET).
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