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Wideband Sensing for Cognitive Radio Systems in Heterogeneous Next Generation Networks
Ahmed M. Barnawi
Pages - 135 - 150     |    Revised - 01-05-2011     |    Published - 31-05-2011
Volume - 3   Issue - 2    |    Publication Date - May / June 2011  Table of Contents
Cognitive Radio, Interference Characterization., Spectrum Sensing
Mobile Next Generation Network (MNGN) is characterized as heterogeneous network where variety of access technologies are meant to coexist. Decisions on choosing an air interface that meets a particular need at a particular time will be shifted from the network’s side to (a more intelligent) user’s side. On top of that network operators and regularities have come to the realization that assigned spectrum bands are not utilized as they should be. Cognitive radio stands out as a candidate technology to address many emerging issues in MNGN such as capacity, quality of service and spectral efficiency. As a transmission strategy, cognitive radio systems depend greatly on sensing the radio environment. In this paper, we present a novel approach for interference characterization in cognitive radio networks based on wideband chirp signal. The results presented show that improved sensing accuracy is maintained at tolerable system complexity.
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Mr. Ahmed M. Barnawi
- Saudi Arabia