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| Content Provider | IET Digital Library |
|---|---|
| Author | Tang, Jie Lambotharan, Sangarapillai Pomeroy, Simon |
| Abstract | We consider a multiple-input and multiple-output (MIMO) cognitive radio (CR) network with a MIMO relay that opportunistically accesses the same frequency band as that of a MIMO primary network. In particular, both interference cancellation and interference alignment techniques have been investigated to enhance the achievable degrees of freedom (DoF) for the MIMO CR network. Based on the number of antennas at the primary network and the secondary network, the authors analytically quantify the maximum achievable DoF of the secondary network by using the proposed techniques. It is shown that the DoF obtained by the CR network in the presence of a MIMO relay is higher than that could be obtained without a relay. The analyses consider both sufficient and insufficient number of antennas at the relay in terms of the ability to separate and decode both the primary and secondary transmitted signals. The simulation results support the analytically quantified achievable DoF results. |
| Starting Page | 188 |
| Ending Page | 200 |
| Page Count | 13 |
| ISSN | 17519675 |
| Volume Number | 7 |
| e-ISSN | 17519683 |
| Issue Number | Issue 3, May (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-spr/7/3 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2012.0350 |
| Journal | IET Signal Processing |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Alignment Technique Antenna Number Cognitive Radio Cognitive Relay Network Degree of Freedom Electromagnetic Compatibility Interference Interference Cancellation Interference Suppression MIMO Communication MIMO System Multiple Input Multiple Output System Primary Network Radio Frequency Interference Radio Link And Equipment Radio Network Secondary Network |
| Content Type | Text |
| Resource Type | Article |
| Subject | Signal Processing Electrical and Electronic Engineering |
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