Buffer-aided max-link relay selection in amplify-and-forward cooperative networks
journal contributionposted on 2017-06-30, 10:43 authored by Zhao Tian, Gaojie Chen, Yu GongYu Gong, Zhi Chen, Jonathon Chambers
This paper investigates the outage performance of an amplify-and-forward (AF) relay system that exploits buffer-aided max-link relay selection. Both asymmetric and symmetric source-to-relay and relay-to-destination channel configurations are considered. We derive the closed-form expressions for the outage probability and analyze the average packet delays. We prove that the diversity order is between N and 2N (where N is the relay number) , corresponding to a relay buffer size between 1 and ∞, respectively. We also analytically show the coding gain. Numerical results are given to verify the theoretical analyses.
This work was supported in part by the Important National Science and Technology Specific Projects of China under Grant 2013ZX03001024.
- Mechanical, Electrical and Manufacturing Engineering