Infinite impulse response multiplierless digital filter architecture

Infinite impulse response multiplierless digital filter architecture

A multiplierless IIR filter incorporates power-of-two coefficients to perform shift operations to reduce space and increase speed. To optimize performance, a genetic algorithm generates the power-of-two coefficients. The filter architecture includes shift registers to receive input samples and previ...

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Bibliographische Detailangaben
Hauptverfasser: BOSE TAMAL, SHARMA CHIRAG RAMGOPAL, THAMVICHAI RATCHANEEKORN, SHAW ALAN W
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
PULSE TECHNIQUE
RESONATORS
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Beschreibung
Zusammenfassung:A multiplierless IIR filter incorporates power-of-two coefficients to perform shift operations to reduce space and increase speed. To optimize performance, a genetic algorithm generates the power-of-two coefficients. The filter architecture includes shift registers to receive input samples and previous outputs. A shifter stage is employed to perform shift operations for the input samples and previous outputs based on corresponding power-of-two coefficients. Products are added by parallelism and sequential pipelining to produce an output.