A novel design methodology for high performance and low power digital filters

摘要: Presents novel design methodologies which can be used to dramatically reduce the complexity of parallel implementations digital FIR filters. These approaches are also applicable IIR Two ideas presented. First, we remove redundant computation by using a graph-theoretic framework in find optimal re-ordering computations for maximal sharing. Second, present approach searching quantization improves sharing when frequency-domain transfer function is allowed deviate within given bounds. A simple search scheme presented and it shown that, appropriate perturbation filter coefficients, one number adders required implementation. Using these approaches, on an average, less than adder per coefficient required, contrast full-width multiplier. Hence, useful compliment existing high-performance low-power filters future mobile computing communication systems.