Relaying protocols for buffer‐aided energy harvesting wireless cooperative networks. Issue 3 (1st May 2018)

• Record Type: Journal Article
• Authors: Zhan, Jun; Liu, Yong; Tang, Xiaohu; Chen, Qingchun
• Is Part Of: IET networks. Volume 7:Issue 3(2018)
• Page Start: 109
• Page End: 118
• Publication Date: 2018-05-01
• Subjects: relay networks (telecommunication) -- energy harvesting -- cooperative communication -- radio networks -- telecommunication power management -- protocols; relaying protocols -- buffer‐aided energy harvesting wireless cooperative networks -- buffer‐aided relay system -- source node -- relay node -- energy harvesting nodes -- destination node -- energy buffer -- harvest‐then‐transmit protocol -- HtT protocol -- joint link selection‐and‐power allocation protocol -- JLSPA protocol -- buffer‐aided energy harvesting relay protocols -- average achievable throughput -- optimal power splitting factor -- channel state information -- buffer state information -- average achievable rate -- average data buffer size -- average delay -- throughput‐delay trade‐off -- buffer‐aided relaying scheme -- throughput performance -- energy harvesting relay system; Computer network architectures -- Periodicals; Computer network protocols -- Periodicals; Information networks -- Periodicals; Telecommunication systems -- Periodicals; 004.605
• DOI: 10.1049/iet-net.2017.0175
• Languages: English
• ISSNs: 2047-4954

Abstract

Abstract : Here, the authors study a buffer‐aided relay system, in which the source node and the relay node are energy harvesting nodes, and the source node transmits the information to the destination node via the relay node. Both the source node and relay node are assumed to equipped with an energy buffer and can temporarily store the harvested energy; in addition, the relay node possesses a data buffer to store the received information temporarily. Particularly, the authors propose two buffer‐aided energy harvesting relay protocols, namely the harvest‐then‐transmit (HtT) protocol and the joint link selection and power allocation (JLSPA) protocol. For the HtT protocol, the expressions of the average achievable throughput and the optimal power splitting factor are obtained in close form. For the JLSPA protocol, based on the channel state information and buffer state information, a JLSPA protocol which maximises the average achievable throughput is presented. Furthermore, for the JLSPA protocol, the bounds on average achievable rate, average data buffer size, and average delay are analysed and the throughput‐delay trade‐off is revealed. The simulation results show that the proposed buffer‐aided relaying scheme could improve the throughput performance of energy harvesting relay system significantly.