WARP, a Unified Wireless Network Testbed for Education and Research
MSE '07 Proceedings of the 2007 IEEE International Conference on Microelectronic Systems Education
The WINLAB network centric cognitive radio hardware platform: WiNC2R
Mobile Networks and Applications
Cyclostationary Signatures in Practical Cognitive Radio Applications
IEEE Journal on Selected Areas in Communications
Iris: an architecture for cognitive radio networking testbeds
IEEE Communications Magazine
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This paper identifies important features a cognitive radio framework should provide, namely a virtual architecture for hardware abstraction, an adaptive run-time system for managing cognition, and high level design tools for cognitive radio development. We evaluate a range of existing frameworks with respect to these, and propose a novel FPGA-based framework that provides all these features. By abstracting away the details of hardware reconfiguration, radio designers can implement FPGA-based cognitive nodes much as they would do for a software implementation. We apply the proposed framework to the design and implementation of a receiver node that works in two modes: discovery, where it uses spectrum sensing to find a radio transmission, and communication, in which it receives and demodulates the said transmission. We show how the whole design process does not require any hardware experience on behalf of the radio designer.