一种基于子空间追踪的宽带压缩频谱感知方法

doi:10.3969/j.issn.1000-0801.2013.01.010

Abstract

Abstract:

Spectrum sensing is the fundamental task for dynamic spectrum management in cognitive radio（CR）. In order to overcome high requirement of sampling rate in traditional spectrum sensing algorithms, subspace pursuit（SP）reconstruction method in the compressed sensing（CS）theory was proposed to be applied in collaborative wideband compressive spectrum sensing. The scheme reconstructed signal spectrum via SP, fixed energy thresholds for each cognitive users, and then detected and identified the available spectrum holes by energy detection method. Simulation results show, the proposed method has better spectrum detection performance in the condition of lower compression ratio, and computational complexity is able to be reduced.

Key words: cognitive radio, spectrum sensing, subspace pursuit, energy detection

Jianwu Zhang,Jingxiu Chi,Xiaorong Xu. A Wideband Compressive Spectrum Sensing Approach Based on Subspace Pursuit[J]. Telecommunications Science, 2013, 29(1): 63-67.

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A Wideband Compressive Spectrum Sensing Approach Based on Subspace Pursuit

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