Software-defined radio: basics and evolution to cognitive radio
EURASIP Journal on Wireless Communications and Networking
Fundamental design tradeoffs in cognitive radio systems
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
Spectrum characterization for opportunistic cognitive radio systems
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Power and Time Allocation Between Multiple Channels in Cognitive Radio Networks
Wireless Personal Communications: An International Journal
A Comparative Study of Different Entropies for Spectrum Sensing Techniques
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Collaborative spectrum sensing by combining energy and cyclostationarity-based detection schemes
International Journal of Ad Hoc and Ubiquitous Computing
Collaborative spectrum sensing by combining energy and cyclostationarity-based detection schemes
International Journal of Ad Hoc and Ubiquitous Computing
| Hi-index | 0.00 |
This paper provides an overview of major problems that are confronting wireless communication with regard to spectrum use in general i.e. by all sectors, government, private, other telecom service providers and military communication. It is commonly believed that there is a crisis of spectrum availability due to tremendous growth in the wireless based systems and the evolution of the radio communication technologies. In fact, there is no shortage of radio spectrum, only a dearth of affordable communications infrastructure. There is potential to make considerably better usage of the radio-spectrum. There are many areas of the radio spectrum which are not fully utilized. Cognitive radios (CR) have been proposed as a way to reuse this underutilized spectrum in an opportunistic manner. A CR is an autonomous unit in a communications environment that senses its environment, tracks changes, and reacts upon its findings and frequently exchanges information with the networks. We show the how the radio frequency is being managed in India and what India is doing to face the challenges to improve the spectrum management. The radio Communication Assembly of ITU is also studying the plan for implementation of CR systems including technical and regulatory issues.