Distributed Role Selection With ANC and TDBC Protocols in Two-Way Relaying Systems
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
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AbstractThis paper advocates a distributed role selection strategy to coordinate two-way relaying transmissions among three cooperative nodes. For such, the local channel state information comparison and decision feedback mechanism are merged into classical analog network coding (ANC) and time division broadcast (TDBC) protocols such that the cooperative role of each node can be designated in a distributed fashion. We refer to this distributed role selection rule as d-ROSE. In both ANC-based and TDBC-based two-way relaying scenarios, strict proof for the equivalence of d-ROSE and optimal ROSE is given, which indicates that albeit the different form, their final role decision is essentially the same. Outage analysis for the d-ROSE strategy is carried out and the scaling law of the system outage behavior at high signal-to-noise ratio (SNR) is characterized, which manifests that d-ROSE can enhance the system diversity gain to one-order higher relative to the ANC and TDBC protocols. It is also shown that d-ROSE can reduce the signaling overhead upto 60% to perform the outage-optimal role selection. Finally, the impacts of node placement on the outage performance as well as the average signaling overhead of d-ROSE are numerically evaluated and some useful conclusions are drawn. © 2015 IEEE.
CitationDing H, da Costa DB, Alouini M-S, Ge J, Gong F-K (2015) Distributed Role Selection With ANC and TDBC Protocols in Two-Way Relaying Systems. IEEE Transactions on Communications 63: 4727–4742. Available: http://dx.doi.org/10.1109/TCOMM.2015.2482963.
SponsorsThe work of H. Ding, J. Ge, and F.-K. Gong was supported by the Natural Science Foundation of Shaanxi province under Grant S2014JC13058, by the National Natural Science Foundation of China under Grant 61301135, by the open research fund of the State Key Laboratory of ISN under Grant ISN15-05, by the R&D Program of China under Grant 2014AA01A704, by the Science and Technology Research and Development Program of Shaanxi Province under Grant 2014KJXX-49, and by the National Natural Science Foundation of China under Grant 61372067. The work of D. B. da Costa was supported by the CNPq under Grant 304301/2014-0. The work of M.-S. Alouini was supported by the Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant NPRP 5-250-2-087. The associate editor coordinating the review of this paper and approving it for publication was G. Bauch.