METHOD AND SYSTEM FOR PERFORMING AN FIR FILTERING OPERATION

摘要

A method and system for an FIR filter are provided. A sequence of input signal is converted to a corresponding sequence of log signals (408). FIR filtering coefficients are then added to each log signal to generate a plurality of term signals (412). The term signals are then converted to inverse-log signals (414), and the inverse-log signals are summed to produce an output signal (416). Log/inverse-log conversions of signals are based on estimating a log/inverse-log function using a second-order polynomial.