Modified absolute value cumulating spectrum sensing algorithm in cognitive radio
Absolute value cumulating (AVC) algorithm is a common spectrum sensing method in Laplacian noise (LED) surroundings,however,the ‘spikes or outliers' in Laplacian noise can't be fully smoothed,which results in bad detection performance.Aiming at this problem,an modified AVC spectrum sensing...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2017-02-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017029/ |
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| author | Zhiyong HE |
| author_facet | Zhiyong HE |
| author_sort | Zhiyong HE |
| collection | DOAJ |
| description | Absolute value cumulating (AVC) algorithm is a common spectrum sensing method in Laplacian noise (LED) surroundings,however,the ‘spikes or outliers' in Laplacian noise can't be fully smoothed,which results in bad detection performance.Aiming at this problem,an modified AVC spectrum sensing algorithm was proposed.The principle was to do the processing of the absolute value of the received signal and the processing result was accumulated as the test statistic to determine whether there was the main user and realize the spectrum sensing.In addition,the central limit theorem was used to deduce the probability density curve of the proposed test statistic in the absence of the primary user,and the theoretical decision threshold was given.Numerical results show that the proposed algorithm outperforms the AVC sensing algorithm and energy detection algorithm with Laplacian noise about 1 dB and 4 dB respectively. |
| format | Article |
| id | doaj-art-5f342801bd664419895f83366f7514ed |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2017-02-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-5f342801bd664419895f83366f7514ed2025-01-15T03:13:21ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012017-02-01339810359603490Modified absolute value cumulating spectrum sensing algorithm in cognitive radioZhiyong HEAbsolute value cumulating (AVC) algorithm is a common spectrum sensing method in Laplacian noise (LED) surroundings,however,the ‘spikes or outliers' in Laplacian noise can't be fully smoothed,which results in bad detection performance.Aiming at this problem,an modified AVC spectrum sensing algorithm was proposed.The principle was to do the processing of the absolute value of the received signal and the processing result was accumulated as the test statistic to determine whether there was the main user and realize the spectrum sensing.In addition,the central limit theorem was used to deduce the probability density curve of the proposed test statistic in the absence of the primary user,and the theoretical decision threshold was given.Numerical results show that the proposed algorithm outperforms the AVC sensing algorithm and energy detection algorithm with Laplacian noise about 1 dB and 4 dB respectively.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017029/spectrum sensingLaplacian noisecentral limit theoremtheoretical detection threshold |
| spellingShingle | Zhiyong HE Modified absolute value cumulating spectrum sensing algorithm in cognitive radio Dianxin kexue spectrum sensing Laplacian noise central limit theorem theoretical detection threshold |
| title | Modified absolute value cumulating spectrum sensing algorithm in cognitive radio |
| title_full | Modified absolute value cumulating spectrum sensing algorithm in cognitive radio |
| title_fullStr | Modified absolute value cumulating spectrum sensing algorithm in cognitive radio |
| title_full_unstemmed | Modified absolute value cumulating spectrum sensing algorithm in cognitive radio |
| title_short | Modified absolute value cumulating spectrum sensing algorithm in cognitive radio |
| title_sort | modified absolute value cumulating spectrum sensing algorithm in cognitive radio |
| topic | spectrum sensing Laplacian noise central limit theorem theoretical detection threshold |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017029/ |
| work_keys_str_mv | AT zhiyonghe modifiedabsolutevaluecumulatingspectrumsensingalgorithmincognitiveradio |