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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)
作者部门工业控制网络与系统研究室
会议名称2017 17th IEEE International Conference on Communication Technology (ICCT 2017)
会议日期October 27-30, 2017
会议地点Chengdu, China
会议录名称2017 17th IEEE International Conference on Communication Technology (ICCT 2017)
出版者IEEE
出版地New York
2017
页码364-368
收录类别EI ; CPCI(ISTP)
EI收录号20182305271406
WOS记录号WOS:000435276600071
产权排序1
ISBN号978-1-5090-3943-2
关键词Cognitive Radio Wideband Spectrum Sensing: Sub-nyquist Sampling Low Snr Spectrum Sensing: Multiple Input Spectrum Sensing
摘要

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.

语种英语
引用统计
文献类型会议论文
条目标识符http://ir.sia.cn/handle/173321/21321
专题工业控制网络与系统研究室
通讯作者Gong TR(宫铁瑞)
作者单位1.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
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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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