Infinite impulse response multiplierless digital filter...

Pulse or digital communications – Equalizers – Automatic

Reexamination Certificate

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C340S870030, C380S265000, C455S307000, C708S420000

Reexamination Certificate

active

10615004

ABSTRACT:
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.

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