Abstract
In the commons model for the spectrum sharing, cognitive users can access the spectrum as long as the target performance in the legitimate primary system is not violated. In this paper, we consider a downlink primary multiple-input-single-output (MISO) system which operates under a controlled interference from the downlink MISO cognitive radio, also called secondary system. We derive exact expressions for outage probability of the primary user under Rayleigh fading, when the primary system is exposed to interference from a secondary base station. Moreover, in high-SNR scenario, a closed-form asymptotic formula for the outage probability is derived, which shows that the primary receiver achieves full spatial diversity under given interference from the secondary user. Next, the optimum transmit power in the secondary system is investigated for maximizing the ergodic capacity when there is an outage constraint at the primary system, and a simple solution is proposed. Finally, the analytical results are confirmed by simulations, in which we analyze the impact of different parameters, such as the number of antennas and the amount of the interference on the system performance; these could be used as system design guidelines.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Conference on Communications |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 2791-2795 |
| Number of pages | 5 |
| ISBN (Print) | 9781467331227 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | 2013 IEEE International Conference on Communications, ICC 2013 - Budapest, Hungary Duration: Jun 9 2013 → Jun 13 2013 |
Other
| Other | 2013 IEEE International Conference on Communications, ICC 2013 |
|---|---|
| Country | Hungary |
| City | Budapest |
| Period | 6/9/13 → 6/13/13 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Computer Networks and Communications
Cite this
Cognitive multiple-antenna network in outage-restricted primary system. / Maham, Behrouz; Popovski, Petar.
IEEE International Conference on Communications. Institute of Electrical and Electronics Engineers Inc., 2013. p. 2791-2795 6654962.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Cognitive multiple-antenna network in outage-restricted primary system
AU - Maham, Behrouz
AU - Popovski, Petar
PY - 2013
Y1 - 2013
N2 - In the commons model for the spectrum sharing, cognitive users can access the spectrum as long as the target performance in the legitimate primary system is not violated. In this paper, we consider a downlink primary multiple-input-single-output (MISO) system which operates under a controlled interference from the downlink MISO cognitive radio, also called secondary system. We derive exact expressions for outage probability of the primary user under Rayleigh fading, when the primary system is exposed to interference from a secondary base station. Moreover, in high-SNR scenario, a closed-form asymptotic formula for the outage probability is derived, which shows that the primary receiver achieves full spatial diversity under given interference from the secondary user. Next, the optimum transmit power in the secondary system is investigated for maximizing the ergodic capacity when there is an outage constraint at the primary system, and a simple solution is proposed. Finally, the analytical results are confirmed by simulations, in which we analyze the impact of different parameters, such as the number of antennas and the amount of the interference on the system performance; these could be used as system design guidelines.
AB - In the commons model for the spectrum sharing, cognitive users can access the spectrum as long as the target performance in the legitimate primary system is not violated. In this paper, we consider a downlink primary multiple-input-single-output (MISO) system which operates under a controlled interference from the downlink MISO cognitive radio, also called secondary system. We derive exact expressions for outage probability of the primary user under Rayleigh fading, when the primary system is exposed to interference from a secondary base station. Moreover, in high-SNR scenario, a closed-form asymptotic formula for the outage probability is derived, which shows that the primary receiver achieves full spatial diversity under given interference from the secondary user. Next, the optimum transmit power in the secondary system is investigated for maximizing the ergodic capacity when there is an outage constraint at the primary system, and a simple solution is proposed. Finally, the analytical results are confirmed by simulations, in which we analyze the impact of different parameters, such as the number of antennas and the amount of the interference on the system performance; these could be used as system design guidelines.
UR - http://www.scopus.com/inward/record.url?scp=84891357324&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84891357324&partnerID=8YFLogxK
U2 - 10.1109/ICC.2013.6654962
DO - 10.1109/ICC.2013.6654962
M3 - Conference contribution
AN - SCOPUS:84891357324
SN - 9781467331227
SP - 2791
EP - 2795
BT - IEEE International Conference on Communications
PB - Institute of Electrical and Electronics Engineers Inc.
ER -