WEB ENABLED SECURE TOLL TRAFFIC TRANSPORT VEHICLE TRAVEL SYSTEM (WEST3 TS)

摘要

The Farrow Structure provides an efficient way to implement the interpolation filter using polynomial approximation method for arbitrary sample rate change. The lagrange polynomial approximation method provides almost exact reconstruction of the new interpolated signal as of the input sampled signal. In this paper, cubic lagrange polynomial and 4th order lagrange polynomial approximation methods have been used to implement the design of the interpolation filter based on Farrow Structure. The optimum filter coefficients have been calculated using both polynomial approximation methods. The performance of the two methods has been compared to get the optimum solution to the design of the interpolation filter using Farrow structure.