Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator
In order to improve the amplitude loss of signal gradient features and seek the optimal scale of signal description, a soft threshold wideband spectrum sensing algorithm based on enhanced gradient operators was proposed. By introducing the gradient enhancement operator to restore the signal amplitud...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2024-05-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2024096/ |
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| _version_ | 1841539167375327232 |
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| author | GONG Kexian FANG Jiale LIU Honghua SUN Peng WANG Wei |
| author_facet | GONG Kexian FANG Jiale LIU Honghua SUN Peng WANG Wei |
| author_sort | GONG Kexian |
| collection | DOAJ |
| description | In order to improve the amplitude loss of signal gradient features and seek the optimal scale of signal description, a soft threshold wideband spectrum sensing algorithm based on enhanced gradient operators was proposed. By introducing the gradient enhancement operator to restore the signal amplitude, combining the gradient characteristics of the signal itself, using different scales to describe the gradient increment of the signal, the soft threshold criterion was obtained. The scale fusion unit was further added, and the best scale of the description signal was obtained by using the joint judgment of hard threshold and soft threshold. Theoretical analysis and simulation results show that the detection probability and false alarm probability of the proposed algorithm are significantly improved and less complex than MPSG algorithm in Gaussian channel and Rayleigh fading channel. By comparing the detection effect of actual data, the proposed algorithm is more suitable for practical engineering. |
| format | Article |
| id | doaj-art-0803afc5e93a4504965f8102e9d5e289 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2024-05-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-0803afc5e93a4504965f8102e9d5e2892025-01-14T07:24:25ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2024-05-014511512762276769Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operatorGONG KexianFANG JialeLIU HonghuaSUN PengWANG WeiIn order to improve the amplitude loss of signal gradient features and seek the optimal scale of signal description, a soft threshold wideband spectrum sensing algorithm based on enhanced gradient operators was proposed. By introducing the gradient enhancement operator to restore the signal amplitude, combining the gradient characteristics of the signal itself, using different scales to describe the gradient increment of the signal, the soft threshold criterion was obtained. The scale fusion unit was further added, and the best scale of the description signal was obtained by using the joint judgment of hard threshold and soft threshold. Theoretical analysis and simulation results show that the detection probability and false alarm probability of the proposed algorithm are significantly improved and less complex than MPSG algorithm in Gaussian channel and Rayleigh fading channel. By comparing the detection effect of actual data, the proposed algorithm is more suitable for practical engineering.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2024096/spectrum sensingenhanced gradient operatorsoft thresholdscale fusion |
| spellingShingle | GONG Kexian FANG Jiale LIU Honghua SUN Peng WANG Wei Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator Tongxin xuebao spectrum sensing enhanced gradient operator soft threshold scale fusion |
| title | Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator |
| title_full | Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator |
| title_fullStr | Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator |
| title_full_unstemmed | Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator |
| title_short | Soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator |
| title_sort | soft threshold wideband spectrum sensing algorithm based on enhanced gradient operator |
| topic | spectrum sensing enhanced gradient operator soft threshold scale fusion |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2024096/ |
| work_keys_str_mv | AT gongkexian softthresholdwidebandspectrumsensingalgorithmbasedonenhancedgradientoperator AT fangjiale softthresholdwidebandspectrumsensingalgorithmbasedonenhancedgradientoperator AT liuhonghua softthresholdwidebandspectrumsensingalgorithmbasedonenhancedgradientoperator AT sunpeng softthresholdwidebandspectrumsensingalgorithmbasedonenhancedgradientoperator AT wangwei softthresholdwidebandspectrumsensingalgorithmbasedonenhancedgradientoperator |