Chicago spectrum occupancy measurements & analysis and a long-term studies proposal
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
Dynamic spectrum access and management
IEEE Wireless Communications
Relaxing pre-selector filter selectivity requirements using cognitive RF front-end control
Analog Integrated Circuits and Signal Processing
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Most of the consideration of the benefits and applicability of dynamic spectrum access has been focused on opportunities associated with spectrum availability. This article describes the use of DSA to resolve challenges in achieving wireless and cognitive radio operation in dense or energetic spectrum. It also demonstrates that the use of DSA can significantly reduce requirements for linearity and dynamic range in the radio front-end, and reduce the intermodulation-induced noise floor through integration of DSA with the selection of front-end filter settings. This approach could enable DSA and cognitive radios to be more affordable than conventional radios, and addresses spectrum issues that are not practically manageable through manual approaches.