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| Content Provider | IET Digital Library |
|---|---|
| Author | Vien, Quoc Tuan Stewart, Brian G. Tianfield, Huaglory Nguyen, Huan X. |
| Abstract | This study is concerned with cooperative spectrum sensing (CSS) mechanisms in three-hop cognitive wireless relay networks (CWRNs). The data transmission from a source to a destination is realised with the aid of two layers of cognitive radio (CR) users which are in the transmission coverage of two primary users. The authors first propose a new CSS scheme for a layer of CR users to improve the spectrum-sensing performance by exploiting both local decisions at the CR users and global decisions at the fusion centre. Particularly, the probabilities of missed detection and false alarm for a practical scenario where all sensing, reporting and backward channels suffer from Rayleigh fading are derived. The derived expressions not only show that the proposed CSS achieves a better sensing performance than the conventional scheme but also characterise the effects of the fading channels on the sensing reliability. Furthermore, the authors propose a CSS scheme for two CR layers in a three-hop CWRN using binary operations to help reduce one phase of sensing for a higher system throughput. |
| Starting Page | 119 |
| Ending Page | 127 |
| Page Count | 9 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 2, Jan (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/2 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2012.0249 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Binary XOR Operator Cognitive Radio Cooperative Spectrum Sensing Data Transmission Fading Channel False Alarm Probability Legislation, Frequency Allocation And Spectrum Pollution Missed Detection Probability Probability Radio Link And Equipment Radio Spectrum Management Rayleigh Channel Rayleigh Fading Relay Network Sensing Reliability Statistics Telecommunication Three-hop Cognitive Wireless Relay Network |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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