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IEICE TRANSACTIONS on Fundamentals

Distributed Collaborative Spectrum Sensing Using 1-Bit Compressive Sensing in Cognitive Radio Networks

Shengnan YAN, Mingxin LIU, Jingjing SI

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Summary :

In cognitive radio (CR) networks, spectrum sensing is an essential task for enabling dynamic spectrum sharing. However, the problem becomes quite challenging in wideband spectrum sensing due to high sampling pressure, limited power and computing resources, and serious channel fading. To overcome these challenges, this paper proposes a distributed collaborative spectrum sensing scheme based on 1-bit compressive sensing (CS). Each secondary user (SU) performs local 1-bit CS and obtains support estimate information from the signal reconstruction. To utilize joint sparsity and achieve spatial diversity, the support estimate information among the network is fused via the average consensus technique based on distributed computation and one-hop communications. Then the fused result on support estimate is used as priori information to guide the next local signal reconstruction, which is implemented via our proposed weighted binary iterative hard thresholding (BIHT) algorithm. The local signal reconstruction and the distributed fusion of support information are alternately carried out until reliable spectrum detection is achieved. Simulations testify the effectiveness of our proposed scheme in distributed CR networks.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E103-A No.1 pp.382-388
Publication Date
2020/01/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.2019EAL2076
Type of Manuscript
LETTER
Category
Communication Theory and Signals

Authors

Shengnan YAN
  Yanshan University,Hebei Key Laboratory of Information Transmission and Signal Processing
Mingxin LIU
  Yanshan University,Hebei Key Laboratory of Information Transmission and Signal Processing
Jingjing SI
  Yanshan University,Hebei Key Laboratory of Information Transmission and Signal Processing

Keyword