Cognitive
Radio
Cognitive
radio is a smart radio that empowers to program and configure
dynamically. The wireless spectrum which is flooded by data through
various channels can be effectively utilized by this technology. This
phenomenal concept was first proposed and officially published by
Joseph Mitola in 1999. Numerous researches across the world have laid
foundation to explore the advantages of using cognitive radio.
This
IEEE 802.22 concept could bring a remarkable efficiency and enhanced
performance while using the wireless spectrum. Wireless spectrum is
one of the most valuable resource from nature which needs to be used
efficiently to avoid wastage. Electromagnetic radiation and frequency
bands unlocked the possibility of high quality and affordable
wireless communication across the globe.
Spectrum
Sharing
By
Sharing the spectrum from unused bands will benefit both the sharers.
(i)
Profit can be made by selling unused spectrum.
(ii)
The quality of communication is improved by uninterrupted spectrum
facility.
How
it works?
Based
on the environment, cognitive radio is capable of changing it's
reception and transmission parameters. Thus allowing dynamic spectrum
management and exploits the locally unused spectrum by validated
access.
Advantages
of using Cognitive Radio:
*
Paves way for uninterrupted and reliable wireless communication
irrespective of the users beloging to various networks.
*
Efficient utilization of Electromagnetic radio spectrum.
*
Minimizing the false alarm
*
Cost effectiveness
About
the researcher:
Dr.
K. Kalimuthu ( Assistant Professor (O.G) Affiliation: Department
of Electronics and Communication Engineering, Kattankulathur Campus,
SRM University) is industriously focused on exploring the technology
of wireless communication. Currently he's engaged which explores the possibilities of advancement in wireless communication.
Educational Qualification:
Master
of Technology (Communication System) - 2007
Bachelor
of Technology (Electronics and Communication) - 2003
Technically
mastered by Courses on:
Digital
Systems, Electric Circuits, Transmission lines and waveguides,
Communication theory, Principles of communication, Wireless
communication and signals and systems
Research
Interests
Wireless
Communication
Signal
Processing
Cognitive
Radio
Selected
Publications
K.
Kalimuthu and Dr.R. Kumar, "An Improved Spectrum Sensing for
Cognitive Radio
Networks
with Rayleigh Fading Channel", Int. Journal of CIIT on wireless
Communication,
June
2011
Academic
Experiences
Assistant
Professor, Dept of ECE, SRM University since 2003
Achievements
and Awards
Best
Performance Teaching Award - 2008
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