In this paper, we introduce a spectrum holes detection approach, which combines blind modulation classification, angle of arrival estimation and number of sources detection. We perform eigenspace analysis to determine the number of sources, and estimate their angles of arrival. In addition, we classify detected sources as primary or secondary users with their distinct second-order/ one-conjugate cyclostationarity features. Extensive simulations carried out indicate that the proposed system identifies and locates individual sources correctly, even at -4 dB SNR.
机构:
Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
Shaanxi Key Lab Deep Space Explorat Intelligent In, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
Zhang, Chenhao
Wang, Wenjie
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Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
Shaanxi Key Lab Deep Space Explorat Intelligent In, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
Wang, Wenjie
Hong, Xi
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机构:
Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
Shaanxi Key Lab Deep Space Explorat Intelligent In, Xian 710049, Shaanxi, Peoples R China
INSPUR Commun Technol Co Ltd, Stand R&D Dept, Jinan 250000, Peoples R ChinaXi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
Hong, Xi
Zhou, Jianwei
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机构:
Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
Shaanxi Key Lab Deep Space Explorat Intelligent In, Xian 710049, Shaanxi, Peoples R ChinaXi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
机构:
Khalifa Univ Sci & Technol, KU Res Ctr 6G, Abu Dhabi 127788, U Arab EmiratesZhejiang Univ, Coll Informat Sci & Elect Engn, Hangzhou 310007, Peoples R China