Fast Detection Method in Cooperative Cognitive Radio Networks
Cognitive Radio (CR) technology improves the utilization of spectrum highly via opportunistic spectrum sharing, which requests fast detection as the spectrum utilization is dynamic. Taking into consideration the characteristic of wireless channels, we propose a fast detection scheme for a cooperativ...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2010-01-01
|
| Series: | International Journal of Digital Multimedia Broadcasting |
| Online Access: | http://dx.doi.org/10.1155/2010/160462 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850160672998948864 |
|---|---|
| author | Zhengyi Li Lin Liu Chi Zhou |
| author_facet | Zhengyi Li Lin Liu Chi Zhou |
| author_sort | Zhengyi Li |
| collection | DOAJ |
| description | Cognitive Radio (CR) technology improves the utilization of spectrum highly via opportunistic spectrum sharing, which requests fast detection as the spectrum utilization is dynamic. Taking into consideration the characteristic of wireless channels, we propose a fast detection scheme for a cooperative cognitive radio network, which consists of multiple CRs and a central control office. Specifically, each CR makes individual detection decision using the sequential probability ratio test combined with Neyman Pearson detection with respect to a specific observation window length. The proposed method upper bounds the detection delay. In addition, a weighted K out of N fusion rule is also proposed for the central control office to reach fast global decision based on the information collected from CRs, with more weights assigned for CRs with good channel conditions. Simulation results show that the proposed scheme can achieve fast detection while maintaining the detection accuracy. |
| format | Article |
| id | doaj-art-a50cb5a2baf647598dc83ef2bada36a0 |
| institution | OA Journals |
| issn | 1687-7578 1687-7586 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Digital Multimedia Broadcasting |
| spelling | doaj-art-a50cb5a2baf647598dc83ef2bada36a02025-08-20T02:23:06ZengWileyInternational Journal of Digital Multimedia Broadcasting1687-75781687-75862010-01-01201010.1155/2010/160462160462Fast Detection Method in Cooperative Cognitive Radio NetworksZhengyi Li0Lin Liu1Chi Zhou2Department of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL 60626, USADepartment of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL 60626, USADepartment of Electrical and Computer Engineering, Illinois Institute of Technology, Chicago, IL 60626, USACognitive Radio (CR) technology improves the utilization of spectrum highly via opportunistic spectrum sharing, which requests fast detection as the spectrum utilization is dynamic. Taking into consideration the characteristic of wireless channels, we propose a fast detection scheme for a cooperative cognitive radio network, which consists of multiple CRs and a central control office. Specifically, each CR makes individual detection decision using the sequential probability ratio test combined with Neyman Pearson detection with respect to a specific observation window length. The proposed method upper bounds the detection delay. In addition, a weighted K out of N fusion rule is also proposed for the central control office to reach fast global decision based on the information collected from CRs, with more weights assigned for CRs with good channel conditions. Simulation results show that the proposed scheme can achieve fast detection while maintaining the detection accuracy.http://dx.doi.org/10.1155/2010/160462 |
| spellingShingle | Zhengyi Li Lin Liu Chi Zhou Fast Detection Method in Cooperative Cognitive Radio Networks International Journal of Digital Multimedia Broadcasting |
| title | Fast Detection Method in Cooperative Cognitive Radio Networks |
| title_full | Fast Detection Method in Cooperative Cognitive Radio Networks |
| title_fullStr | Fast Detection Method in Cooperative Cognitive Radio Networks |
| title_full_unstemmed | Fast Detection Method in Cooperative Cognitive Radio Networks |
| title_short | Fast Detection Method in Cooperative Cognitive Radio Networks |
| title_sort | fast detection method in cooperative cognitive radio networks |
| url | http://dx.doi.org/10.1155/2010/160462 |
| work_keys_str_mv | AT zhengyili fastdetectionmethodincooperativecognitiveradionetworks AT linliu fastdetectionmethodincooperativecognitiveradionetworks AT chizhou fastdetectionmethodincooperativecognitiveradionetworks |