Paper Info
Title
System Design for Cognitive Radio Conmunications
Abstract
The rising number and capacity requirements of radio systems bring about an increasing demand for frequency spectrum. Cognitive radio offers a tempting solution to this problem by proposing opportunistic usage of frequency bands that are not occupied by their licensed users. Since it is a rather new concept, there is no consensus on the practical im- plementation of cognitive radio communications. In this paper, a comprehensive system design for cognitive radio is presented. The details of spectrum sensing and dynamic spectrum shaping, which constitute the basics of opportunistic spectrum usage, are given. It is proposed to transmit the spectrum sensing related information via on-off keying (OOK) modulated ultrawideband (UWB). The limits on the range of one-to-one cognitive communications are discussed. A processing gain based approach that leads to an increased range for cognitive networks is proposed. Different signaling options for the real data communications are given, and among these options an impulse radio that employs raised cosine filters is investigated in detail.
Year
DOI
Venue
2006
10.1109/CROWNCOM.2006.363451
Mykonos Island
Keywords
Field
DocType
amplitude shift keying,cognitive radio,filtering theory,ultra wideband communication,UWB information,cognitive radio communications,comprehensive system design,cosine filters,dynamic spectrum shaping,frequency spectrum,gain based approach,on-off keying modulated ultrawideband information,radio systems,real data communications,signaling options,spectrum sensing
Raised-cosine filter,Telecommunications,Computer science,Amplitude-shift keying,Keying,Systems design,Electronic engineering,Process gain,Radio spectrum,Cognitive radio,Cognitive network
Conference
ISBN
Citations 
PageRank 
1-4244-0381-2
10
0.84
References 
Authors
5
3
Name
Order
Citations
PageRank
Şahin, M.E.1100.84
H. Arslan22698174.53
Mustafa E. Sahin31069.09