Adaptive protocol for full-duplex two-way systems with the buffer-aided relaying

作者：Lin, Betene Anyugu Francis^*; Ye, Xiangshen; Hao, Shengqi

来源：IET Communications, 2019, 13(1): 54-58.

DOI：10.1049/iet-com.2018.5155

• probability
• protocols
• relay networks (telecommunication)
• queueing theory
• wireless channels
• Markov processes
• two-way relaying
• finite buffers
• cumulative network throughput
• buffer states
• lossy link
• outage probability
• queue state transition
• analytic Markov chain model
• queueing delay
• buffer overflow
• buffer-aided relaying
• full-duplex decode-and-forward relay
• adaptive protocol

In this study, the authors explore two-way relaying having a full-duplex decode-and-forward relay with two finite buffers. Chiefly, they propose a novel adaptive protocol (that maximises the cumulative network throughput) based on the combination of the buffer states, lossy link, and the outage probability; a decision is generated as to whether it can transmit, receive or even simultaneously receive and transmit information. Towards this objective, first, based on the queue state transition and the outage probability, an analytic Markov chain model is proposed to analyse this scheme, and the throughput and queueing delay are derived. Second, they evaluate the performance of the throughput according to the variation of the self-interference. The authors' numerical results reveal exciting insights. First, the adaptive protocol is optimal when the length of the buffer is superior to a certain threshold. Second, they demonstrate that the adaptive protocol can boost the transmission efficiency and prevent buffer overflow.

• 出版日期2019-1-4
• 单位上海交通大学