Flexible DSP Accelerator Architecture Exploiting Carry-Save Arithmetic
Abstract
Hardware acceleration has been proved an extremely promising implementation strategy for the digital signal processing (DSP) domain. Rather than adopting a monolithic application-specific integrated circuit design approach, in this brief, we present a novel accelerator architecture comprising Flexible computational units that support the execution of a large set of operation templates found in DSP kernels. We differentiate from previous works on flexible accelerators by enabling computations to be aggressively performed with carry-save (CS) formatted data. Advanced arithmetic design concepts, i.e., recoding techniques, are utilized enabling CS optimizations to be performed in a larger scope than in previous approaches.
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