Power allocation for cognitive users applying OFDM under dynamic spectrum activity

Author

Filio, Oscar ; Primak, Serguei ; Kontorovich, Valeri

Author_Institution

Univ. of Western Ontario, London, ON, Canada

fYear

2012

fDate

14-17 March 2012

Firstpage

1

Lastpage

4

Abstract

In this paper a new and original approach for power allocation for cognitive users is proposed. The approach is based on the application of the order statistics (maximum terms of the variation series) for instantaneous SNR levels. Contrary to the widely applied methods, in the proposed approach, power is allocated to the groups of the OFDM sub-carriers which suffer the same flat fading. It is shown by means of an example how results of this method can be compared with the sub-optimum results of the nonlinear programming presented before.

Keywords

OFDM modulation; cognitive radio; nonlinear programming; radio spectrum management; statistical analysis; OFDM subcarrier; cognitive user; dynamic spectrum activity; flat fading; instantaneous SNR level; nonlinear programming; order statistics; power allocation; variation series; Cognitive radio; Concrete; OFDM; Resource management; Sensors; Signal to noise ratio; Cognitive users; OFDM; dynamic activity; primary users;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices, Circuits and Systems (ICCDCS), 2012 8th International Caribbean Conference on

Conference_Location

Playa del Carmen

Print_ISBN

978-1-4577-1116-9

Electronic_ISBN

978-1-4577-1115-2

Type

conf

DOI

10.1109/ICCDCS.2012.6188893

Filename

6188893