Signal Processing in Cognitive Radio

Cognitive radio allows for usage of licensed frequency bands by unlicensed users. However, these unlicensed (cognitive) users need to monitor the spectrum continuously to avoid possible interference with the licensed (primary) users. Apart from this, cognitive radio is expected to learn from its sur...

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Bibliographic Details
Published in:Proceedings of the IEEE 2009-05, Vol.97 (5), p.805-823
Main Authors: Ma, Jun, Li, Geoffrey Ye, Juang, Biing Hwang
Format: Article
Language:English
Subjects:
Chromium
Cognitive radio
Cyclostationary detection
Detection
energy detection
FCC
Frequency
Frequency bands
Interference
matched filter detection
Matched filters
Monitoring
Monitors
Networks
Radio
RF signals
Signal processing
spectrum sculpting
spectrum sensing
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Summary:Cognitive radio allows for usage of licensed frequency bands by unlicensed users. However, these unlicensed (cognitive) users need to monitor the spectrum continuously to avoid possible interference with the licensed (primary) users. Apart from this, cognitive radio is expected to learn from its surroundings and perform functions that best serve its users. Such an adaptive technology naturally presents unique signal-processing challenges. In this paper, we describe the fundamental signal-processing aspects involved in developing a fully functional cognitive radio network, including spectrum sensing and spectrum sculpting.
ISSN:0018-9219
1558-2256
DOI:10.1109/JPROC.2009.2015707