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Cognitive UWB-OFDM: Combining Ultrawideband with Opportunistic Spectrum Usage

Summary: Cognitive UWB-OFDM: Combining Ultrawideband
with Opportunistic Spectrum Usage
H¨useyin Arslan and Mustafa E. S¸ahin
Electrical Engineering Department, University of South Florida
4202 E. Fowler Avenue, ENB-118, Tampa, FL, 33620
E-mail: {arslan, mesahin}@eng.usf.edu
Abstract-- In a continuously expanding wireless world, the
number of radio systems increases every day, and efficient
spectrum usage becomes a more significant requirement. Ul-
trawideband (UWB) and cognitive radio are two recent and
exciting technologies that offer a new approach to the spectrum
usage. The main objective of this paper is to combine these
two technologies. The strength of orthogonal frequency division
multiplexing (OFDM) based UWB in co-existing with licensed
systems is investigated. The opportunity concept is defined,
and the requirements of the opportunistic spectrum usage are
explained. It is proposed to take the UWB-OFDM from the
current underlay implementation, and evolve it to a combined
underlay and opportunistic spectrum usage technology, leading to
cognitive UWB-OFDM. This way, we aim at making UWB more


Source: Arslan, Hüseyin - Department of Electrical Engineering, University of South Florida


Collections: Engineering