Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/103323
Title: Distributed decisions on TV spectrum allocation considering spatial and temporal variation
Authors: Chen, Zhenwei
Zhang, Wenjie
Yang, Jingmin
Yang, Liwei
Yeo, Chai Kiat
Keywords: TV Spectrum Allocation
Distributed Algorithm
DRNTU::Engineering::Computer science and engineering
Issue Date: 2018
Source: Chen, Z., Zhang, W., Yang, J., Yang, L., & Yeo, C. K. (2018). Distributed decisions on TV spectrum allocation considering spatial and temporal variation. IEEE Access, 6, 59316-59328. doi:10.1109/ACCESS.2018.2875061
Series/Report no.: IEEE Access
Abstract: TV spectrum has lower path loss, longer transmission range, and higher penetration capability, resulting in a wide range of potential important applications. However, unlike Wi-Fi bands, TV spectrum is subjected to high spatial and temporal variations due to the random arrivals and departures of primary users (PUs), which results in new technical challenges in TV spectrum utilization. One important issue is how to allocate TV spectrum to secondary users (SUs) by taking the spatial and temporal variations into consideration. This has been largely ignored in previous studies. In this paper, we first formulate the TV spectrum allocation problem as a 0–1 integer optimization problem, and then we approximate our optimal objective via Log-Sum-Exp function. Thereafter, we solve this problem by implementing a Markov chain in a distributed manner. Furthermore, we extend the static problem setting to a dynamic environment where the number of vacant TV channels varies with time due to the arrivals and departures of PUs. Simulation results show that our proposed distributed algorithm can converge very fast to the optimal solution, and can achieve a close-to optimal performance with a guaranteed loss bound.
URI: https://hdl.handle.net/10356/103323
http://hdl.handle.net/10220/47282
DOI: 10.1109/ACCESS.2018.2875061
Rights: © 2018 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCSE Journal Articles

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