Abstract
This paper studies the asymptotic sum-rate of the primary network within the relay-assisted multi-antenna cognitive radio system performing amplify-and-forward relaying. The achievable sum-rates are derived in the large-system limit by means of the replica method. A closed-form expression for the sum-rate of the primary network is obtained for large antenna arrays as a function of parameters obtained by solving a set of fixed-point equations. Numerical simulations confirm the validity of the results even for systems with only a few antennas at each terminal.
| Original language | English |
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| Title of host publication | 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012 |
| Publisher | IEEE Institute of Electrical and Electronic Engineers |
| Pages | 709-714 |
| ISBN (Electronic) | 978-1-4673-2568-4, 978-1-4673-2569-1 |
| ISBN (Print) | 978-1-4673-2566-0 |
| DOIs | |
| Publication status | Published - 1 Dec 2012 |
| MoE publication type | A4 Article in a conference publication |
| Event | 23rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012 - Sydney, Australia Duration: 9 Sept 2012 → 12 Sept 2012 Conference number: 23 |
Publication series
| Series | IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications Workshops |
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| ISSN | 2166-9570 |
Conference
| Conference | 23rd IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012 |
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| Abbreviated title | PIMRC |
| Country/Territory | Australia |
| City | Sydney |
| Period | 9/09/12 → 12/09/12 |