Asynchronous perception algorithm based on energy detection
In the future heterogeneous wireless networks,since primary user (PU) and cognitive secondary user (SU) are not coordinated to be synchronous,it will result in sense timing difference between PU’s transmitter and SU’s receiver.For this asynchronous sense case,a new asynchronous sensing algorithm bas...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2017-03-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/thesisDetails#10.11959/j.issn.1000-436x.2017039 |
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| author | Pan YU Bin LI Cheng-lin ZHAO |
| author_facet | Pan YU Bin LI Cheng-lin ZHAO |
| author_sort | Pan YU |
| collection | DOAJ |
| description | In the future heterogeneous wireless networks,since primary user (PU) and cognitive secondary user (SU) are not coordinated to be synchronous,it will result in sense timing difference between PU’s transmitter and SU’s receiver.For this asynchronous sense case,a new asynchronous sensing algorithm based on Bayesian estimation theory was proposed.A unified dynamic state space model was first proposed to describe the observable energy relationship with dynamic PU state and unknown timing difference.Then,an iterative estimation scheme was designed using stochastic finite set and the rules of maximum posterior probability.Finally,approximated estimation results were obtained by using a particle filter.The simulation results show that the proposed asynchronous scheme significantly eliminates the uncertainty of the received signal information and thus improves the spectrum sensing performance by obtaining the time difference accurately. |
| format | Article |
| id | doaj-art-c0c7b4e568fd4429af55fbb89e168b05 |
| institution | OA Journals |
| issn | 1000-436X |
| language | zho |
| publishDate | 2017-03-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-c0c7b4e568fd4429af55fbb89e168b052025-08-20T02:09:31ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2017-03-013816517359708818Asynchronous perception algorithm based on energy detectionPan YUBin LICheng-lin ZHAOIn the future heterogeneous wireless networks,since primary user (PU) and cognitive secondary user (SU) are not coordinated to be synchronous,it will result in sense timing difference between PU’s transmitter and SU’s receiver.For this asynchronous sense case,a new asynchronous sensing algorithm based on Bayesian estimation theory was proposed.A unified dynamic state space model was first proposed to describe the observable energy relationship with dynamic PU state and unknown timing difference.Then,an iterative estimation scheme was designed using stochastic finite set and the rules of maximum posterior probability.Finally,approximated estimation results were obtained by using a particle filter.The simulation results show that the proposed asynchronous scheme significantly eliminates the uncertainty of the received signal information and thus improves the spectrum sensing performance by obtaining the time difference accurately.http://www.joconline.com.cn/thesisDetails#10.11959/j.issn.1000-436x.2017039spectrum sensing;asynchronous perception;dynamic state-space model;maximum posterior probabilityjoint estimation |
| spellingShingle | Pan YU Bin LI Cheng-lin ZHAO Asynchronous perception algorithm based on energy detection Tongxin xuebao spectrum sensing;asynchronous perception;dynamic state-space model;maximum posterior probability joint estimation |
| title | Asynchronous perception algorithm based on energy detection |
| title_full | Asynchronous perception algorithm based on energy detection |
| title_fullStr | Asynchronous perception algorithm based on energy detection |
| title_full_unstemmed | Asynchronous perception algorithm based on energy detection |
| title_short | Asynchronous perception algorithm based on energy detection |
| title_sort | asynchronous perception algorithm based on energy detection |
| topic | spectrum sensing;asynchronous perception;dynamic state-space model;maximum posterior probability joint estimation |
| url | http://www.joconline.com.cn/thesisDetails#10.11959/j.issn.1000-436x.2017039 |
| work_keys_str_mv | AT panyu asynchronousperceptionalgorithmbasedonenergydetection AT binli asynchronousperceptionalgorithmbasedonenergydetection AT chenglinzhao asynchronousperceptionalgorithmbasedonenergydetection |