Impact of Power Allocation and Antenna Directivity in the Capacity of a Multiuser Cognitive Ad Hoc Network

Montejo, Samuel; Souza, Richard Demo; Fernandez, Evelio M. G.; Alfonso, Vitalio

Impact of Power Allocation and Antenna Directivity in the Capacity of a Multiuser Cognitive Ad Hoc Network

Files

12_04_1110_1116.pdf(198.56 KB)

Date

2012-12

Authors

Montejo, Samuel

Souza, Richard Demo

Fernandez, Evelio M. G.

Alfonso, Vitalio

Publisher

Společnost pro radioelektronické inženýrství

Abstract

This paper studies the benefits that power control and antenna directivity can bring to the capacity of a multiuser cognitive radio network. The main objective is to optimize the secondary network sum rate under the capacity constraint of the primary network. Exploiting location awareness, antenna directivity, and the power control capability, the cognitive radio ad hoc network can broaden its coverage and improve capacity. Computer simulations show that by employing the proposed method the system performance is significantly enhanced compared to conventional fixed power allocation.

Keywords

Cognitive radio, power control, location awareness, antenna directivity

Citation

Radioengineering. 2012, vol. 21, č. 4, s. 1110-1116. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2012/12_04_1110_1116.pdf

Document type

Peer-reviewed

Document version

Published version

Language of document

en

Document licence

Creative Commons Attribution 3.0 Unported License
http://creativecommons.org/licenses/by/3.0/