Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio system
State-of-the-art sensing methods only exploit three dimensions of the spectrum space:frequency，time and space whereas the angle dimension has not been exploited well enough for opportunistic spectrum access.Motivated by this，the authors apply angle of arrival (AOA) estimation algorithm to spectrum s...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2015-04-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015087/ |
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| author | Chang LIU SajjadAli Syed Rui ZHANG Si-ying LI Jie WANG Ming-lu JIN |
| author_facet | Chang LIU SajjadAli Syed Rui ZHANG Si-ying LI Jie WANG Ming-lu JIN |
| author_sort | Chang LIU |
| collection | DOAJ |
| description | State-of-the-art sensing methods only exploit three dimensions of the spectrum space:frequency，time and space whereas the angle dimension has not been exploited well enough for opportunistic spectrum access.Motivated by this，the authors apply angle of arrival (AOA) estimation algorithm to spectrum sensing and propose two blind spectrum sensing methods based on spatial spectrum.First is based on the ratio of maximum to minimum delay-sum spatial spectrum; the other is based on the ratio of average to minimum delay-sum spatial spectrum.Taking the advantage of spatial matched filtering，the proposed methods can achieve high probability of detection as well as offer the AOA information for spectrum access，which improve the spectrum efficiency.In addition，utilizing latest random matrix theories (RMT)，this work quantifies the detection threshold and derives the probabilities of detection for the proposed methods in theory.Extensive simulations carried out in Nakagami-m fading channel indicate that the proposed methods outperform the existing blind spectrum sensing methods. |
| format | Article |
| id | doaj-art-1cf940ce9ea74c2a9be1df6e74d120f9 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2015-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-1cf940ce9ea74c2a9be1df6e74d120f92025-01-14T06:46:12ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2015-04-013611512459692435Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio systemChang LIUSajjadAli SyedRui ZHANGSi-ying LIJie WANGMing-lu JINState-of-the-art sensing methods only exploit three dimensions of the spectrum space:frequency，time and space whereas the angle dimension has not been exploited well enough for opportunistic spectrum access.Motivated by this，the authors apply angle of arrival (AOA) estimation algorithm to spectrum sensing and propose two blind spectrum sensing methods based on spatial spectrum.First is based on the ratio of maximum to minimum delay-sum spatial spectrum; the other is based on the ratio of average to minimum delay-sum spatial spectrum.Taking the advantage of spatial matched filtering，the proposed methods can achieve high probability of detection as well as offer the AOA information for spectrum access，which improve the spectrum efficiency.In addition，utilizing latest random matrix theories (RMT)，this work quantifies the detection threshold and derives the probabilities of detection for the proposed methods in theory.Extensive simulations carried out in Nakagami-m fading channel indicate that the proposed methods outperform the existing blind spectrum sensing methods.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015087/spectrum sensingAOA estimationspatial spectrumspatial matched filteringrandom matrix theories |
| spellingShingle | Chang LIU SajjadAli Syed Rui ZHANG Si-ying LI Jie WANG Ming-lu JIN Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio system Tongxin xuebao spectrum sensing AOA estimation spatial spectrum spatial matched filtering random matrix theories |
| title | Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio system |
| title_full | Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio system |
| title_fullStr | Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio system |
| title_full_unstemmed | Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio system |
| title_short | Spatial spectrum based blind spectrum sensing for multi-antenna cognitive radio system |
| title_sort | spatial spectrum based blind spectrum sensing for multi antenna cognitive radio system |
| topic | spectrum sensing AOA estimation spatial spectrum spatial matched filtering random matrix theories |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015087/ |
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