TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Energy-efficient Buffer-aided Optimal Relay Selection Scheme with Power Adaptation and Inter-relay Interference Cancellation |
| 영문제목(English Title) |
Energy-efficient Buffer-aided Optimal Relay Selection Scheme with Power Adaptation and Inter-relay Interference Cancellation |
| 저자(Author) |
Xiaorong Xu
Liang Li
Yingbiao Yao
Xianyang Jiang
Sanqing Hu
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| 원문수록처(Citation) |
VOL 10 NO. 11 PP. 5343 ~ 5364 (2016. 11) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Considering the tradeoff between energy consumption and outage behavior in buffer-aided relay selection, a novel energy-efficient buffer-aided optimal relay selection scheme with power adaptation and Inter-Relay Interference (IRI) cancellation is proposed. In the proposed scheme, energy consumption minimization is the objective with the consideration of relay buffer state, outage probability and relay power control, in order to eliminate IRI. The proposed scheme selects a pair of optimal relays from multiple candidate relays, denoted as optimal receive relay and optimal transmit relay respectively. Source-relay and relay-destination communications can be performed within a time-slot, which performs as Full-Duplex (FD) relaying. Markov chain model is applied to analyze the evolution of relay buffer states. System steady state outage probability and achievable diversity order are derived respectively. In addition, packet transmission delay and power reduction performance are investigated with a specific analysis. Numerical results show that the proposed scheme outperforms other relay selection schemes in terms of outage behavior with power adaptation and IRI cancellation in the same relay number and buffer size scenario. Compared with Buffer State relay selection method, the proposed scheme reduces transmission delay significantly with the same amount of relays. Average transmit power reduction can be implemented to relays with the increasing of relay number and buffer size, which realizes the tradeoff between energy-efficiency, outage behavior and delay performance in green cooperative communications.
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| 키워드(Keyword) |
Buffer-aided relay selection
power adaptation and IRI cancellation
energy-efficiency
buffer state
outage probability
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| 파일첨부 |
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