A multi-band spectrum sensing method based on sticky hidden Markov model
Existing multi-band spectrum sensing methods often use the sparsity of broadband spectrum.However, high spectrum occupancy rate of primary users degrades their performance severely.To address this issue, a novel multi-band spectrum sensing method was proposed by exploiting the state correlation amon...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2021-01-01
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| Series: | Dianxin kexue |
| Subjects: | |
| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2021018/ |
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| _version_ | 1841529134904246272 |
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| author | Zhongjie JIA Ming JIN Xiaoqun SONG |
| author_facet | Zhongjie JIA Ming JIN Xiaoqun SONG |
| author_sort | Zhongjie JIA |
| collection | DOAJ |
| description | Existing multi-band spectrum sensing methods often use the sparsity of broadband spectrum.However, high spectrum occupancy rate of primary users degrades their performance severely.To address this issue, a novel multi-band spectrum sensing method was proposed by exploiting the state correlation among adjacent frequency bands.Firstly, a sticky hidden Markov model (SHMM) was established by regarding the multi-band states and measured energies as hidden and observed variables.In the SHMM, a sticky factor was introduced to represent the state correlation among adjacent frequency bands.Secondly, iterative expressions for the parameters of SHMM were derived.Finally, multi-band spectrum sensing was implemented by obtaining the posterior mean of observations from every frequency bands.Simulation results show that the proposed method outperforms existing methods, and when the false alarm probability is 0.1, the average frequency band occupancy rate is 50%, and the average signal-to-noise ratio is -12 dB, the detection probability can reach close to 0.99, which is about 30% higher than the detection probability of other methods.In addition, the proposed method had a faster convergence rate than existing methods and therefore has lower computational complexity. |
| format | Article |
| id | doaj-art-f1bab04844ad40399127d4de5d42127d |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-f1bab04844ad40399127d4de5d42127d2025-01-15T03:25:41ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012021-01-0137485759806345A multi-band spectrum sensing method based on sticky hidden Markov modelZhongjie JIAMing JINXiaoqun SONGExisting multi-band spectrum sensing methods often use the sparsity of broadband spectrum.However, high spectrum occupancy rate of primary users degrades their performance severely.To address this issue, a novel multi-band spectrum sensing method was proposed by exploiting the state correlation among adjacent frequency bands.Firstly, a sticky hidden Markov model (SHMM) was established by regarding the multi-band states and measured energies as hidden and observed variables.In the SHMM, a sticky factor was introduced to represent the state correlation among adjacent frequency bands.Secondly, iterative expressions for the parameters of SHMM were derived.Finally, multi-band spectrum sensing was implemented by obtaining the posterior mean of observations from every frequency bands.Simulation results show that the proposed method outperforms existing methods, and when the false alarm probability is 0.1, the average frequency band occupancy rate is 50%, and the average signal-to-noise ratio is -12 dB, the detection probability can reach close to 0.99, which is about 30% higher than the detection probability of other methods.In addition, the proposed method had a faster convergence rate than existing methods and therefore has lower computational complexity.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2021018/cognitive radiomulti-band spectrum sensingsticky hidden Markov model |
| spellingShingle | Zhongjie JIA Ming JIN Xiaoqun SONG A multi-band spectrum sensing method based on sticky hidden Markov model Dianxin kexue cognitive radio multi-band spectrum sensing sticky hidden Markov model |
| title | A multi-band spectrum sensing method based on sticky hidden Markov model |
| title_full | A multi-band spectrum sensing method based on sticky hidden Markov model |
| title_fullStr | A multi-band spectrum sensing method based on sticky hidden Markov model |
| title_full_unstemmed | A multi-band spectrum sensing method based on sticky hidden Markov model |
| title_short | A multi-band spectrum sensing method based on sticky hidden Markov model |
| title_sort | multi band spectrum sensing method based on sticky hidden markov model |
| topic | cognitive radio multi-band spectrum sensing sticky hidden Markov model |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2021018/ |
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