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Finite impulse response utilizing the principle of superposition.

S E Carter¹, D C Malocha

¹Dept. of Electr. and Comput. Eng., Central Florida Univ., Orlando, FL.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

|January 1, 1997

Summary

A new finite impulse response (FIR) filter design algorithm offers a simpler, more efficient method for optimizing filter length and specifications. This approach reduces computational complexity compared to existing FIR design techniques.

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Area of Science:

Digital Signal Processing
Filter Design

Background:

Optimizing finite impulse response (FIR) filter length is crucial for reducing filter size and computational load.
Existing FIR design algorithms include Remez exchange, linear programming, and least mean squares, each with limitations.

Purpose of the Study:

To introduce a novel, efficient, and accurate algorithm for designing FIR filters with arbitrary specifications.
To present a technique for tailoring passband and stopband responses for near-optimum time length.

Main Methods:

Definition of basic functions for the design process.
Overview of the FIR filter design procedure.
Presentation of a technique for achieving tailored frequency responses and near-optimum time length.

Main Results:

The new algorithm demonstrates simplicity, efficiency, and accuracy in FIR filter design.
It requires fewer computations than many existing FIR approaches.
The design is applicable to compensating for second-order effects in surface acoustic wave (SAW) devices.

Conclusions:

The developed FIR design algorithm provides a valuable alternative for creating efficient digital filters.
It offers advantages in computational efficiency and design flexibility for specific applications like SAW devices.