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Erschienen in: Wireless Personal Communications 3/2015

01.08.2015

Joint Overlay-Underlay Optimal Power Allocation in Cognitive Radio

verfasst von: Juhi Gupta, Vikram Karwal, Vivek K. Dwivedi

Erschienen in: Wireless Personal Communications | Ausgabe 3/2015

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Abstract

In this paper a novel cognitive radio system model is proposed in which secondary user transmitter (SU-Tx) operates under two modes underlay and overlay, based on the channel sensing information it receives. This is an effort to maximize transmission data rate based on the threshold which decides the mode of operation. In this paper, the resources are utilized efficiently by making them operate in both the modes. It provides the optimal power allocation to the CR user in a way that it should not provide interference to its neighbouring users, specifically the most prioritized primary/licensed users. The performance of each mode is analyzed with attainable ergodic and outage capacity.

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Metadaten
Titel
Joint Overlay-Underlay Optimal Power Allocation in Cognitive Radio
verfasst von
Juhi Gupta
Vikram Karwal
Vivek K. Dwivedi
Publikationsdatum
01.08.2015
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 3/2015
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-015-2516-x

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