基于支撑集融合的分布式协作压缩频谱检测方法

doi:10.3969/j.issn.1001-506X.2020.02.28

Abstract

Abstract:

In the cognitive radio system, a distributed cooperative compressed spectrum sensing scheme based on support set fusion is proposed in order to solve the problems of wideband spectrum detection, i.e., high sampling pressure, huge data transmission overheads and serious channel fading. In this scheme, the local reconstruction process of compressed signals and the distributed fusion process of support sets are alternately carried out. On the one hand, the support set information obtained in the local reconstruction process is fused in a distributed manner, and on the other hand, the fusion result is used as priori information to guide the local reconstruction. Simulation results show that the spectrum detection performance of the proposed scheme is close to that of the centralized compressed detection scheme, and also this scheme has the advantage of low computational overhead due to low complexity of iterative signal recovery.

Key words: cognitive radio (CR), wideband spectrum sensing, cooperative spectrum sensing, compressed sensing (CS)

CLC Number:

TN929.5

Shengnan YAN, Mingxin LIU. Distributed cooperative compressed spectrum sensing scheme based on support set fusion[J]. Systems Engineering and Electronics, 2020, 42(2): 466-472.

Figures/Tables 7

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References 28

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参数	l=1	l=2	l=3	l=4	l=5	l=6	l=7	l=8
T_l	270	108	83	52	32	28	25	-
Y_l	302	269	186	155	152	136	118	117

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Distributed cooperative compressed spectrum sensing scheme based on support set fusion

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