Low-latency and high-reliability performance analysis of relay systems

Long, Hang, Xiang, Wei, and Sun, Yao (2018) Low-latency and high-reliability performance analysis of relay systems. IET Communications, 12 (5). pp. 627-633.

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The latency and reliability of single-relay and multi-relay systems are investigated in this study. In a single-relay system with the amplify-and-forward protocol, a new approximation analytical method is proposed for the outage probability, which can also be extended to be used in the multi-relay system. The latency-reliability trade-off degree (LRTD) of single- and multi-relay systems, i.e. the slope of the latency-outage probability curve with logarithmic scales, is analysed and proved to be the same as the number of relay nodes. In the multi-relay system, the relationship between the system LRTD and the channel state information overhead is investigated. The optimum number of relay nodes can be derived according to the approximate expression of the outage probability. A simple iterative method is proposed to obtain the optimum number of relay nodes. The convergence of the iterative method is also proved.

Item ID: 53460
Item Type: Article (Research - C1)
ISSN: 1751-8636
Keywords: relay networks (telecommunication), amplify and forward communication, protocols, telecommunication network reliability, probability, approximation theory, iterative methods, high-reliability performance analysis, relay systems, multirelay systems, single
Copyright Information: Copyright © The Institution of Engineering and Technology 2017
Funders: National Natural Science Foundation of China (NSFC), Doctoral Program of Higher Education of China (DPC)
Projects and Grants: NSFC Project 61302088, DPC grant no. 20130005120003
Date Deposited: 03 May 2018 12:15
FoR Codes: 40 ENGINEERING > 4006 Communications engineering > 400608 Wireless communication systems and technologies (incl. microwave and millimetrewave) @ 100%
SEO Codes: 89 INFORMATION AND COMMUNICATION SERVICES > 8901 Communication Networks and Services > 890103 Mobile Data Networks and Services @ 100%
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