A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum Sensing
To effectively improve the throughput performance of secondary user in cognitive networks, a dual threshold based opportunistic spectrum access policy was proposed, which could be implemented under the condition that secondary user had non-ideal spectrum sensing capability. The proposed policy can t...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2014-08-01
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| Series: | Dianxin kexue |
| Subjects: | |
| Online Access: | http://www.telecomsci.com/zh/article/doi/10.3969/j.issn.1000-0801.2014.08.009/ |
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| _version_ | 1841529350399197184 |
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| author | Xiaodong Peng Limin Xiao Xiaofeng Zhong Shidong Zhou |
| author_facet | Xiaodong Peng Limin Xiao Xiaofeng Zhong Shidong Zhou |
| author_sort | Xiaodong Peng |
| collection | DOAJ |
| description | To effectively improve the throughput performance of secondary user in cognitive networks, a dual threshold based opportunistic spectrum access policy was proposed, which could be implemented under the condition that secondary user had non-ideal spectrum sensing capability. The proposed policy can take both channel quality information of secondary user and the inaccurate channel occupation information into account, to make secondary user access the channel in sensed idle and busy states with different channel quality thresholds. Based on this, the throughput performance of secondary user can be improved significantly by utilizing the transmission opportunities with good channel quality. With this policy, an optimization problem maximizing the effective throughput of secondary user with interference constraint for protecting primary user was formulated, and the optimal channel quality thresholds were derived under non-ideal spectrum sensing. Simulation results demonstrate the effective throughput performance of secondary user with non-ideal spectrum sensing capability can be improved significantly by implementing the proposed dual threshold based opportunistic spectrum access policy. |
| format | Article |
| id | doaj-art-9ab813b34e3445a7be22a21359ae82ee |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2014-08-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-9ab813b34e3445a7be22a21359ae82ee2025-01-15T03:19:22ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012014-08-0130606559620561A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum SensingXiaodong PengLimin XiaoXiaofeng ZhongShidong ZhouTo effectively improve the throughput performance of secondary user in cognitive networks, a dual threshold based opportunistic spectrum access policy was proposed, which could be implemented under the condition that secondary user had non-ideal spectrum sensing capability. The proposed policy can take both channel quality information of secondary user and the inaccurate channel occupation information into account, to make secondary user access the channel in sensed idle and busy states with different channel quality thresholds. Based on this, the throughput performance of secondary user can be improved significantly by utilizing the transmission opportunities with good channel quality. With this policy, an optimization problem maximizing the effective throughput of secondary user with interference constraint for protecting primary user was formulated, and the optimal channel quality thresholds were derived under non-ideal spectrum sensing. Simulation results demonstrate the effective throughput performance of secondary user with non-ideal spectrum sensing capability can be improved significantly by implementing the proposed dual threshold based opportunistic spectrum access policy.http://www.telecomsci.com/zh/article/doi/10.3969/j.issn.1000-0801.2014.08.009/non-ideal spectrum sensingdual thresholdopportunistic spectrum accesschannel quality |
| spellingShingle | Xiaodong Peng Limin Xiao Xiaofeng Zhong Shidong Zhou A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum Sensing Dianxin kexue non-ideal spectrum sensing dual threshold opportunistic spectrum access channel quality |
| title | A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum Sensing |
| title_full | A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum Sensing |
| title_fullStr | A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum Sensing |
| title_full_unstemmed | A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum Sensing |
| title_short | A Dual Threshold Based Opportunistic Spectrum Access Policy with Non-Ideal Spectrum Sensing |
| title_sort | dual threshold based opportunistic spectrum access policy with non ideal spectrum sensing |
| topic | non-ideal spectrum sensing dual threshold opportunistic spectrum access channel quality |
| url | http://www.telecomsci.com/zh/article/doi/10.3969/j.issn.1000-0801.2014.08.009/ |
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