QoS-Constrained Energy Efficiency of Cooperative ARQ in Multiple DF Relay Systems

被引:24
作者
Hu, Yulin [1 ]
Gross, James [2 ]
Schmeink, Anke [1 ]
机构
[1] Rhein Westfal TH Aachen, UMIC Res Ctr, D-52074 Aachen, Germany
[2] KTH Royal Inst Technol, Sch Elect Engn, S-10044 Stockholm, Sweden
关键词
Cooperative automatic repeat request (C-ARQ); cooperative communications; decode-and-forward (DF) relaying; effective capacity; energy efficiency; multiple relays; WIRELESS NETWORKS; PERFORMANCE ANALYSIS; CAPACITY THEOREMS; PROTOCOLS; DIVERSITY; CHANNEL; RADIO;
D O I
10.1109/TVT.2015.2399398
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];
摘要
In this paper, we study the higher layer performance as well as the "throughput, delay, energy consumption" tradeoff problem for multirelay-assisted cooperative automatic repeat request (C-ARQ) protocols. We study a practical scenario where only the average channel state information (CSI) is available at the source and relays. We consider four multirelay C-ARQ protocols and derive closed-form expressions for the transmission delay distribution, the energy consumption, and the higher layer queuing performance. Furthermore, we analyze the quality of service (QoS)-constrained 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 QoS-constrained energy efficiency by 4%.
引用
收藏
页码:848 / 859
页数:12
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