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This paper presents three reconfigurable radio systems developed within CTVR, The Telecommunications Research Centre and demonstrated at the IEEE International Dynamic Spectrum Access Networks (DySPAN) symposium held in Chicago in October 2008. All three systems were developed using the Iris cognitive radio network architecture. Each system employs a different processing platform. Today's radio communication...
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...
Adaptive systems are set to become more mainstream, as numerous practical applications in the communications domain emerge. FPGAs offer an ideal implementation platform, combining high performance with flexibility. While significant research has been undertaken in the area of FPGA partial reconfiguration, it has focussed primarily on low-level architecture-specific implementations. Building upon this...
Cognitive radio-based Open Spectrum systems offer a solution to the issue of spectrum scarcity by allowing wireless networks to dynamically access spectrum while coordinating to co-exist and avoid the creation of harmful interference. However, before a practical open spectrum system may be implemented, a number of significant technical and policy challenges must be overcome. One such technical challenge...
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