A coarse-grained dynamically reconfigurable architecture for digital signal processing

This paper presents design and implementation of a coarse-grained reconfigurable architecture, targeting digital signal processing applications. The proposed architecture is constructed from a mesh of resource cells, containing the separated processing and memory elements that communicate via a hybrid interconnect network. Parameterizable design of resource cells enables flexible static mapping of arbitrary applications, and the feature of dynamic reconfigurability provides mapping possibilities during system run-time to adapt to the current operational and processing conditions. Functionality is demonstrated by mapping a radix 22 FFT processor reconfigurable between 32 and 1,024 points. Performance evaluation exhibits a great reconfigurability and execution time reduction when compared to an ordinary DSP solution