Comparative study of frequency agile data transmission schemes for cognitive radio transceivers
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
How America's fragmented approach to public safety wastes money and spectrum
Telecommunications Policy
EURASIP Journal on Wireless Communications and Networking - Cognitive Radio and Dynamic Spectrum Sharing Systems
Resource distribution approaches in spectrum sharing systems
EURASIP Journal on Wireless Communications and Networking - Cognitive Radio and Dynamic Spectrum Sharing Systems
On the primary exclusive region of cognitive networks
IEEE Transactions on Wireless Communications
Cognitive UWB radio: a smarter radio for smarter products
SMC'09 Proceedings of the 2009 IEEE international conference on Systems, Man and Cybernetics
Area spectrum efficiency of TV white space wireless system with transmit power control
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
Optimization of OFDMA-based cellular cognitive radio networks
IEEE Transactions on Communications
Performance of secondary radios in spectrum sharing with prioritized primary access
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
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As societies become increasingly mobile and more dependent on information technologies, their radio spectrum also needs change. The basic spectrum management structure in all countries was developed over a long period, and much of the basic framework has remained stable for decades. The FCC is interested in making more spectrum available to unlicensed devices because of the explosive growth of IEEE 802.11/Wi-Fi unlicensed wireless LAN technology, and because the FCC recognizes that there is a great deal of "white space" that could be exploited by unlicensed devices. The FCC proposal selected the TV bands as an initial home for cognitive radio based on several factors. First, the frequencies used for TV can give greater range in rural areas than the microwave frequencies used for Wi-Fi, and can also give better building penetration than Wi-Fi in all areas. Second, TV broadcast systems usually use high antennas, and the intended receivers need greater than 10 dB signal-to-noise ratio (SNR) to function. A variety of controversial issues have emerged from public comments. One concern is that the confusion resulting from the proposal might discourage purchase of new digital televisions and hence delay the transition from analog to digital televisions. This would also delay the transfer of some current TV spectrum to new mobile uses, including public safety.