TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Simultaneous Wireless Information and Power Transfer in Two-hop OFDM Decode-and-Forward Relay Networks |
| 영문제목(English Title) |
Simultaneous Wireless Information and Power Transfer in Two-hop OFDM Decode-and-Forward Relay Networks |
| 저자(Author) |
Xiaofei Di
Ke Xiong
Yu Zhang
Zhengding Qiu
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| 원문수록처(Citation) |
VOL 10 NO. 01 PP. 0152 ~ 0167 (2016. 01) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
This paper investigates the simultaneous wireless information and power transfer (SWIPT) for two-hop orthogonal frequency division multiplexing (OFDM) decode-and-forward (DF) relay network, where a relay harvests energy from radio frequency signals transmitted by a source and then uses the harvested energy to assist information transmission from the source to its destination. The power splitting receiver is considered at the relay. To explore the performance limit of such a SWIPT-enabled system, a resource allocation (RA) optimization problem is formulated to maximize the achievable information rate of the system, where the power allocation, the subcarrier pairing and the power splitting factor are jointly optimized. As the problem is non-convex and there is no known solution method, we first decompose it into two separate subproblems and then design an efficient RA algorithm. Simulation results demonstrate that our proposed algorithm can achieve the maximum achievable rate of the system and also show that to achieve a better system performance, the relay node should be deployed near the source in the SWIPT-enabled two-hop OFDM DF relay system, which is very different from that in conventional non-SWIPT system where the relay should be deployed at the midpoint of the line between the source and the destination.
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| 키워드(Keyword) |
Energy harvesting (EH)
relay network
orthogonal frequency division multiplexing(OFDM)
resource allocation
SWIPT
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| 파일첨부 |
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