Microwave and RF Design of Wireless Systems
Microwave and RF Design of Wireless Systems
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Digital and Analog Communication Systems
Digital and Analog Communication Systems
Dynamic spectrum access in cognitive radio networks
Dynamic spectrum access in cognitive radio networks
Digital Signal Processing (4th Edition)
Digital Signal Processing (4th Edition)
Application of artificial intelligence to wireless communications
Application of artificial intelligence to wireless communications
Cognitive radio as a mechanism to manage front-end linearity and dynamic range
IEEE Communications Magazine
A framework for statistical wireless spectrum occupancy modeling
IEEE Transactions on Wireless Communications
Cognitive radio: Ten years of experimentation and development
IEEE Communications Magazine
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This paper proposes the use of a cognitive engine to control the local oscillator and sampling frequencies in a flexible receiver RF front-end. The analysis in this paper shows that this cognitive engine has the potential to relax selectivity requirement of the pre-selector filter in receiver RF front-end. The cognitive engine is designed by modeling the RF front-end in channelized spectrum domain. The paper also develops a new spectrum occupancy model to evaluate the performance of the approach. Theoretical analysis and simulations are also carried out using the developed model. The results show that the designed cognitive engine can enable a poorly selective receiver to behave similar to highly selective receiver. Furthermore, this paper analyzes the computational complexity of the designed cognitive engine.