QoS-Constrained Energy Efficiency of Cooperative ARQ in Multiple DF Relay Systems
2015 (English)In: IEEE Transactions on Vehicular Technology, ISSN 0018-9545, E-ISSN 1939-9359, 848-859 p.Article in journal (Refereed) Published
In this paper, we study the higher-layer performance as well as the "throughput, delay, energy consumption" tradeoff problem for multi-relay assisted cooperative automatic repeat request (C-ARQ) protocols. We study a practical scenario where only the average channel state information is available at the source and relays. We consider four multi-relay C-ARQ protocols, and derive closed-form expressions for the transmission delay distribution, the energy consumption and the higherlayer queuing performance. Furthermore, we analyze the QoSconstrained energy efficiency performances of the protocols. Our analysis is validated by simulations. In addition, we evaluate the system performance under these C-ARQ protocols and for different topologies. We conclude several guidelines for the design of efficient C-ARQ protocols. Finally, a simple extension of the studied C-ARQ protocols is proposed, which improves the QoSconstrained energy efficiency by 4%.
Place, publisher, year, edition, pages
IEEE Press, 2015. 848-859 p.
C-ARQ, cooperative communications, DF relaying, effective capacity, energy efficiency, multiple relays
Research subject Electrical Engineering
IdentifiersURN: urn:nbn:se:kth:diva-165935DOI: 10.1109/TVT.2015.2399398ISI: 000370754000029ScopusID: 2-s2.0-84962171184OAI: oai:DiVA.org:kth-165935DiVA: diva2:809164
FunderICT - The Next Generation
QC 201506042015-04-302015-04-302016-03-23Bibliographically approved