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A Multiple-Input Nyquist Folding Receiver Architecture for Low SNR Wideband Spectrum Sensing
Gong TR(宫铁瑞); Wang GS(王庚善); Yang ZJ(杨志家); Duan MQ(段茂强)
Department工业控制网络与系统研究室
Conference Name2017 17th IEEE International Conference on Communication Technology (ICCT 2017)
Conference DateOctober 27-30, 2017
Conference PlaceChengdu, China
Source Publication2017 17th IEEE International Conference on Communication Technology (ICCT 2017)
PublisherIEEE
Publication PlaceNew York
2017
Pages364-368
Indexed ByEI ; CPCI(ISTP)
EI Accession number20182305271406
WOS IDWOS:000435276600071
Contribution Rank1
ISBN978-1-5090-3943-2
KeywordCognitive Radio Wideband Spectrum Sensing: Sub-nyquist Sampling Low Snr Spectrum Sensing: Multiple Input Spectrum Sensing
Abstract

The ever increasing demand of communication makes the spectrum more crowded, and thus the Cognitive Radio (CR) emerged as a potential effective scheme to increase the utilization of spectrum. Sub-Nyquist sampling based CR can greatly reduce the sampling rate than those Nyquist sampling based schemes for wideband spectrum sensing. But existing single node sub-Nyquist sampling schmes seldom use spatial diversity and show poor recovery and detection performance in low Signal to Noise Ratio (SNR) condition. NYquist Folding Receiver (NYFR) as one of effective sub-Nyquist sampling schemes exhibits a lower system working frequency than most other schemes, but it is greatly effectted by noise. In this paper, we first investigate the property that the Additive White Gaussian Noise (AWGN) after sub-Nyquist sampling by NYFR is still the AWGN, then, we propose a Multiple Input NYquist Folding Receiver (MI-NYFR) scheme by using the noise white-keeping property and spatial diversity. The proposed scheme is tested respectively in denoising and detection respects in AWGN channel. Simulation results show that the proposed MI-NYFR exhibits good noise robustness and high detection probability very well in low SNR condition.

Language英语
Citation statistics
Document Type会议论文
Identifierhttp://ir.sia.cn/handle/173321/21321
Collection工业控制网络与系统研究室
Corresponding AuthorGong TR(宫铁瑞)
Affiliation1.Department of Industrial Control Network and Systems, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, China
2.University of Chinese Academy of Sciences, Beijing, China
3.Department of Industrial Control Network and Systems, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, China
4.University of Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Gong TR,Wang GS,Yang ZJ,et al. A Multiple-Input Nyquist Folding Receiver Architecture for Low SNR Wideband Spectrum Sensing[C]. New York:IEEE,2017:364-368.
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