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Learning-based spectrum sharing and spatial reuse in mm-wave ultra dense networks

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Fan, C., Li, Bin, Zhao, Chenglin, Guo, Weisi and Liang, Y. (2018) Learning-based spectrum sharing and spatial reuse in mm-wave ultra dense networks. IEEE Transactions on Vehicular Technology, 67 (6). 4954 -4968. doi:10.1109/TVT.2017.2750801 ISSN 0018-9545.

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Official URL: http://doi.org/10.1109/TVT.2017.2750801

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Abstract

In this paper, the throughput maximization of millimeter-wave (mm-Wave) ultra-dense networks (UDN) using dynamic spectrum sharing (DSS) is considered. Most of the existing works only allow temporal-domain access and admit at most one user at each time slot, resulting in significant under-utilization of spectrum resource, which will be less attractive to mm-wave UDN applications. A generalized temporal-spatial sharing scheme is proposed in this paper for UDN by exploiting the location information of incumbent devices, where multiple users are allowed to access each channel simultaneously via spatial separations. For distributed applications, the global information exchange among secondary users (SU) tends to be impractical, given the unaffordable signaling overhead and latency. Thus, a non-cooperative game with fine-grained two-dimensional reuse is formulated, which leads to a more efficient access strategy. It is then proved to be an ordinary potential game (OPG), which guarantees the existence of the strategy Nash equilibrium (NE). Finally, an improved decentralized reinforcement learning algorithm is designed, with which SUs can learn from wireless environments and adapt towards to a NE point, relying on the individual observation and the historical action-reward (rather than the global information exchanging). The convergence efficiency of the new scheme is also rigorously proved. Numerical simulations are provided to validate the performances of the proposed schemes.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Millimeter waves
Journal or Publication Title: IEEE Transactions on Vehicular Technology
Publisher: IEEE
ISSN: 0018-9545
Official Date: June 2018
Dates:
DateEvent
June 2018Published
11 September 2017Available
1 August 2017Accepted
Volume: 67
Number: 6
Page Range: 4954 -4968
DOI: 10.1109/TVT.2017.2750801
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 17 August 2017
Date of first compliant Open Access: 17 August 2017
Funder: Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC)
Grant number: 61471061, 61571100
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