Title
A Cooperative Spectrum Sensing Method Based on Soft Low-Rank Subspace Clustering
Abstract
When processing sensing signals under low signal-to-noise ratio environment, the sensing performance cannot be guaranteed in existing algorithms. To ensure sensing performance, we propose a novel spectrum sensing algorithm based on soft low-rank subspace clustering (SLRSC) in this brief. Firstly, the lowest rank coefficient matrix of signal vectors is calculated by low-rank representation, and the adjacency matrix is built to make coefficient matrix balance. Secondly, the eigenvalue of the adjacency covariance matrix is extracted as a feature. Finally, variable weighting <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$k$ </tex-math></inline-formula> -means method is used to cluster, which avoids complicated threshold derivation and improves cluster accuracy. Simulation results prove that the proposed SLRSC algorithm has excellent sensing performance under high noise case.
Year
DOI
Venue
2022
10.1109/TCSII.2022.3174342
IEEE Transactions on Circuits and Systems II: Express Briefs
Keywords
DocType
Volume
Spectrum sensing,low-rank representation,coefficient matrix,variable weighting k-means
Journal
69
Issue
ISSN
Citations 
9
1549-7747
0
PageRank 
References 
Authors
0.34
15
4
Name
Order
Citations
PageRank
Shuwan Ma100.34
Yonghua Wang233.19
Jinxuan Ren300.34
Ming Yin420210.61