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Over-the-air computation for cooperative wideband spectrum sensing and performance analysis
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Chen, Li, Zhao, Nan, Chen, Yunfei, Yu, Richard and Wei, Guo (2018) Over-the-air computation for cooperative wideband spectrum sensing and performance analysis. IEEE Transactions on Vehicular Technology, 67 (11). pp. 10603-10614. doi:10.1109/TVT.2018.2866539 ISSN 0018-9545.
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WRAP-over-the-air-computation-cooperative-wideband-spectrum-Chen-2018.pdf - Accepted Version - Requires a PDF viewer. Download (1822Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/TVT.2018.2866539
Abstract
For sensor network aided cognitive radio, cooperative wideband spectrum sensing can distribute the sampling and computing pressure of spectrum sensing to multiple sensor nodes (SNs) in an efficient way. However, this may incur high latency due to distributed data aggregation, especially when the number of SNs is large. In this paper, we propose a novel cooperative wideband spectrum sensing scheme using over-the-air computation. Its key idea is to utilize the superposition property of wireless channel to implement the summation of Fourier transform. This avoids distributed data aggregation by computing the target function directly. The performance of the proposed scheme is analyzed with imperfect synchronization between different SNs. Furthermore, a synchronization phase offset (SPO) estimation and equalization method is proposed. The corresponding performance after equalization is also derived. A working prototype based on universal software radio periphera (USRP) and Monte Carlo simulation is built to verify the performance of the proposed scheme.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Cognitive radio networks, Wireless sensor networks, Synchronization, Wireless sensor nodes | ||||||||
Journal or Publication Title: | IEEE Transactions on Vehicular Technology | ||||||||
Publisher: | IEEE | ||||||||
ISSN: | 0018-9545 | ||||||||
Official Date: | 1 November 2018 | ||||||||
Dates: |
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Volume: | 67 | ||||||||
Number: | 11 | ||||||||
Page Range: | pp. 10603-10614 | ||||||||
DOI: | 10.1109/TVT.2018.2866539 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 13 September 2018 | ||||||||
Date of first compliant Open Access: | 13 September 2018 | ||||||||
RIOXX Funder/Project Grant: |
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