Power Control and Concurrent Transmission for Cognitive Ad Hoc Networks

Through location awareness, cognitive radio systems can establish a scanning free region where coexistence with a primary network is possible. Exploiting the power control capability of cognitive radio devices can expand this region, improving the system throughput. In this paper we investigate the...

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Bibliographic Details
Published in:Revista IEEE América Latina 2013-03, Vol.11 (2), p.857-864
Main Authors: Montejo Sanchez, S., Reguera, V. Alfonso, Garcia Fernandez, Evelio Martin, Godoy, W.
Format: Article
Language:English
Subjects:
Ad hoc networks
Allocations
Cognitive radio
Computer simulation
concurrent transmission
Estimates
FCC
Irrigation
location awareness
Mathematical analysis
Mobile radio mobility management
Networks
Power control
Scanning
Signal to noise ratio
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Summary:Through location awareness, cognitive radio systems can establish a scanning free region where coexistence with a primary network is possible. Exploiting the power control capability of cognitive radio devices can expand this region, improving the system throughput. In this paper we investigate the impact of power control on the concurrent transmission probability. A new analytical model is proposed that allows to estimate the resulting expanded region when power adjustment is made between known limits. Computer simulations show that employing the proposed method the system performance is significantly improved compared to conventional fixed transmission power allocation.
ISSN:1548-0992
1548-0992
DOI:10.1109/TLA.2013.6533977