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The architecture of a recently proposed Globally Asynchronous Locally Synchronous (GALS) processor dedicated to security programs is considered. Operations are performed using a number of Functional Units (FUs) grouped into a number of Execution Regions (ERs) working with independent clocks. The selection of the number of ERs as well as the distribution of the FUs among regions is approached as a...
Fast Fourier Transform (FFT) is one of the basic building blocks in signal processing and communications systems. The butterflies-based structure of the FFT is the main reason for the reduced number of arithmetic operations required to implement the transform. From implementation point of view, the complex rotations used in butterflies can be implemented by using COordinate Rotation DIgital Computer...
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