Robust design of spectrum-sharing networks
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Modiano_Robust design.pdf
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Author(s)
Lee, Hyang-Won
Liang, Qingkai
Modiano, Eytan H
Date Issued
May 2016
Journal
Proceedings of the 14th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), 2016
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Liang, Qingkai, Hyang-Won Lee, and Eytan Modiano. “Robust Design of Spectrum-Sharing Networks.” IEEE, 2016. 1–8.
Version
Original manuscript
Abstract
In spectrum-sharing networks, primary users have the right to preempt secondary users, which significantly degrades the performance of underlying secondary users. In this paper, we use backup channels to provide reliability guarantees for secondary users. In particular, we study the optimal white channel assignment that minimizes the amount of recovery capacity (i.e., bandwidth of backup channels) needed to meet a given reliability guarantee. This problem is shown to be coupled by two NP-hard objectives. We characterize the structure of the optimal assignment and develop bi-criteria approximation algorithms. Moreover, we investigate the scaling of the recovery capacity as the network size becomes large. It is shown that the recovery capacity is negligible as compared to the total traffic demands in a large-scale network.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Laboratory for Information and Decision Systems
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
http://dx.doi.org/10.1109/WIOPT.2016.7492940
