Homotopy reconstruction for compressive sensing based cooperative transmissions in cognitive radio network

2015 ◽  
Author(s):  
Xiaorong Xu ◽  
Haiyan Cao ◽  
Qian Guo
Keyword(s):  
Cognitive Radio ◽  
Compressive Sensing ◽  
Cognitive Radio Network ◽  
Radio Network ◽  
Cooperative Transmissions

Gradual Compressive Spectrum Sensing for Wideband Cognitive Radio Network

2013 ◽  
Vol 441 ◽  
pp. 915-919
Author(s):  
Bin Bin Xu
Keyword(s):  
Cognitive Radio ◽  
Compressive Sensing ◽  
Spectrum Sensing ◽  
Cognitive Radio Network ◽  
Signal To Noise Ratio ◽  
Network Throughput ◽  
Signal Acquisition ◽  
Radio Network ◽  
Signal To Noise ◽  
Spectral Recovery

In this paper, a Gradual Compressive spectrum sensing method is presented for collaborated users in wideband cognitive radio (CR) network. By taking the advantage of compressive sensing (CS), we can reconstructs the wideband spectrum using sub-Nyquist samples. Furthermore, we employ gradual signal acquisition and recovery that can terminate the process once the result of spectral recovery converge. This proposed method is flexible for different wideband signal sparsity and signal to noise ratio, leading to enhanced network throughput. Simulations testify the effectiveness of the proposed method in CR networks.

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