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JOURNAL OF COMMUNICATIONS AND NETWORKS, VOL. 8, NO. 2, JUNE 2006 1 Cognitive UWB-OFDM: Pushing Ultrawideband
 

Summary: JOURNAL OF COMMUNICATIONS AND NETWORKS, VOL. 8, NO. 2, JUNE 2006 1
Cognitive UWB-OFDM: Pushing Ultrawideband
Beyond Its Limit via Opportunistic Spectrum Usage
Hüseyin Arslan and Mustafa E. ¸Sahin
Abstract:
In a continuously expanding wireless world, the number of ra-
dio systems increases every day, and efficient spectrum usage be-
comes a more significant requirement. Ultrawideband (UWB) and
cognitive radio are two exciting technologies that offer new ap-
proaches to the spectrum usage. The main objective of this paper
is to shed the first light on the marriage of these two important
approaches. The strength of orthogonal frequency division multi-
plexing (OFDM) based UWB in co-existing with licensed systems is
investigated. The opportunity concept is defined, and the require-
ments of the opportunistic spectrum usage are explained. It is pro-
posed to take the UWB-OFDM from the current underlay imple-
mentation, 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 competitive in the wireless mar-
ket with extended range, higher capacity, better performance, and

  

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

 

Collections: Engineering