Joint compressive spectrum sensing scheme in wideband cognitive radio networks
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- 作者：Jun-hua Liang (1) liang456@gmail.com
Yang Liu (1)
Wen-jun Zhang (1) - 关键词：compressive sensing – ; analog ; to ; in ; formation converter (AIC) – ; wideband congitive radio (CR) network – ; joint sparsity – ; spectrum recovery
- 刊名：Journal of Shanghai University (English Edition)
- 出版时间：December 2011
- 出版年：2011
- 期刊代码：pc596_1007-6417
- 类别：mat
- 卷：15
- 期：6
- 页码：568-573
- 数据来源：sp
摘要
In this paper, a distributed compressive spectrum sensing scheme in wideband cognitive radio networks is investigated. An analog-to-information converters (AIC) RF front-end sampling structure is proposed which use parallel low rate analog to digital conversions (ADCs) and fewer storage units for wideband spectrum signal sampling. The proposed scheme uses multiple low rate congitive radios (CRs) collecting compressed samples through AICs distritbutedly and recover the signal spectrum jointly. A general joint sparsity model is defined in this scenario, along with a universal recovery algorithm based on simultaneous orthogonal matching pursuit (S-OMP). Numerical simulations show this algorithm outperforms current existing algorithms under this model and works competently under other existing models.