Joint signal detection algorithm of cognitive radio in UWB

doi:10.1007/s11460-009-0049-3

Front Elect Electr Eng Chin

2009, Vol. 4

Issue (3) : 295-299 https://doi.org/10.1007/s11460-009-0049-3

RESEARCH ARTICLE

Joint signal detection algorithm of cognitive radio in UWB

Hongjun WANG^1,2(

), Guangguo BI¹

1. National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China; 2. Department of Information, Electronic Engineering Institute, Hefei 230037, China

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Abstract

With the progress of research on cognitive radio in ultra-wideband (UWB) open frequency-band, a joint detection algorithm integrating the energy and bi-spectrum detection is proposed in detail for non-Gaussian signal detection from Gaussian noise. The performance of the algorithm was evaluated by simulation, the result of which indicates that the joint detection not only solves the problem of the signal detection in low signal-to-noise ratio (SNR) but also improves the operational speed and the detection probability. Thus, the joint detection algorithm has definite prospect in practice.

Keywords ultra-wideband (UWB) cognitive radio joint detection bi-spectrum estimation

Corresponding Author(s): WANG Hongjun,Email:hongjun-wang@163.com

Issue Date: 05 September 2009

Cite this article:

Hongjun WANG,Guangguo BI. Joint signal detection algorithm of cognitive radio in UWB[J]. Front Elect Electr Eng Chin, 2009, 4(3): 295-299.

URL:

https://academic.hep.com.cn/fee/EN/10.1007/s11460-009-0049-3
https://academic.hep.com.cn/fee/EN/Y2009/V4/I3/295

Fig.1 Joint detection algorithm

Fig.2 Energy spectrum of signal with SNR=-9 dB

Fig.3 Energy spectrum of signal with SNR=0 dB

Fig.4 Bi-spectrum of signal with SNR=-9 dB

Fig.5 Bi-spectrum of signal with SNR=0 dB

Fig.6 Probability of detection

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