Control de Potencia y Transmissión Concurrente en Redes Ad Hoc Cognitivas (Power Control and Concurrent Transmission for Cognitive Ad Hoc Networks)

Samuel Montejo Sánchez (, Vitalio Alfonso Reguera (, Evelio Martin Garcia Fernandez (, Walter Godoy (

1Universidad Central de Las Villas
2Universidade Federal do Parana
3Universidade Tecnológica Federal do Paraná

This paper appears in: Revista IEEE América Latina

Publication Date: March 2013
Volume: 11,   Issue: 2 
ISSN: 1548-0992

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

Index Terms:
power control, location awareness, concurrent transmission, ad hoc networks, cognitive radio   

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