DocumentCode :
3097608
Title :
Cognitive radio - an adaptive waveform with spectral sharing capability
Author :
Chakravarthy, Vasu D. ; Shaw, Arnab K. ; Temple, Michael A. ; Stephens, James P.
Author_Institution :
Air Force Res. Lab., Wright-Patterson AFB, OH, USA
Volume :
2
fYear :
2005
fDate :
13-17 March 2005
Firstpage :
724
Abstract :
The growth of wireless applications and spectral limitations are serious concerns for both the military and civilian communities. Cognitive radio (CR) technologies expand spectrum efficiency using elements of space, time and frequency diversity that up to now have not been exploited. An adaptive waveform (AW) generation technique is presented which adapts to the changing electromagnetic environment and synthesizes waveform features in the frequency domain. Spectral coexistence with other applications is also addressed and can be accomplished in both static and dynamic environments. Bit error rate (BER) serves as the primary performance metric for evaluating and comparing AW processing with other waveforms and systems.
Keywords :
adaptive signal processing; cognitive systems; diversity reception; error statistics; frequency shift keying; transforms; AWCS; BER performance metric; FH-BFSK systems; TDCS; adaptive waveform communication systems; adaptive waveform generation technique; cognitive radio; frequency diversity; frequency domain waveform feature synthesis; space diversity; spectral coexistence; spectral congestion; spectral sharing capability waveform; spectrum efficiency; time diversity; transform domain communication systems; Bit error rate; Chromium; Cognitive radio; FCC; Force sensors; Frequency; Interference; Laboratories; Signal processing; Space technology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference, 2005 IEEE
ISSN :
1525-3511
Print_ISBN :
0-7803-8966-2
Type :
conf
DOI :
10.1109/WCNC.2005.1424597
Filename :
1424597
Link To Document :
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