Cognitive radio technology
Cognitive radio technology is a smarter, faster, and more efficient way to transmit information to and from fixed, mobile, other wireless communication devices. Cognitive radio builds upon software-defined radio technology. A cognitive radio system is 'aware' of its operating environment and automatically adjusts itself to maintain desired communications--it's like having a trained operator ‘inside' the radio making constant adjustments for maximum performance. Operating frequency, power output, antenna orientation/beamwidth, modulation, and transmitter bandwidth are just a few of the operating parameters that can automatically be adjusted on the fly in a cognitive radio system.
Fette has constructed a cutting-edge volume that hits all of the important issues including research, management, and support. Cognitive techniques will be discussed such as position and network awareness, infrastructure and physical and link layer concerns. Though still a nascent technology, cognitive radio is being pushed by the US military and for mission-critical civilian communications (such as emergency and public safety services).
*The first book on a revolutionary technology that will be critical to military, emergency, and public safety communications
*A multi-contributed volume written by the leaders in this exciting new area
*Describes the location-determination capabilities of cognitive radio (the precise location of all units in a cognitive radio network can be determined in real time)
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History and Background of Cognitive Radio
Communications Policy and Spectrum
The Software Defined Radio as a Platform
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AACR action adaptation algorithm antenna applications approach architecture awareness band bandwidth behavior capabilities channel chapter cognitive engine cognitive radio communications complexity components computational contraction mapping convergence CORBA DARPA database decision defined devices domain dynamic environment example FPGA frequency function Genetic Algorithms geolocation hardware IEEE implemented interface interference knowledge language layer learning Lyapunov stable Markov chain mobile modulation multipath multiple node noise normal form game ontology operating optimization parameters performance policy engine policy management potential game problem propagation protocol query radio system receiver regulatory rules Section Semantic Web sensors sequence signal processing SINCGARS SINR Software Defined Radio speaker recognition specific spectral spectrum access spectrum management Spectrum Policy speech structure supermodular techniques tion transmitter vector waveform wireless