Efficient FIR filter for high-speed communication

Details Efficient FIR filter for high-speed communication Efficient FIR filter for high-speed communication

2007-07-24

2007-07-24

Deppe, Betsy L. (Department: 2611)

Pulse or digital communications

Equalizers

C708S319000

Reexamination Certificate

active

09860743

ABSTRACT:
A method for reducing a propagation delay of a digital filter. The digital filter has an input path and an output path and includes a set of delay elements and a number of taps. The taps couples the input path to the output path. Each of the taps includes a coefficient, a multiplier and an adder. Each of the delay elements is disposed between two adjacent taps. The delay elements are placed in both the input path and the output path of the digital filter, such that the digital filter has fewer delay elements in the input path than a direct-form digital filter having the same number of taps in a direct-form structure and has fewer delay elements in the output path than a transposed-form digital filter having the same number of taps in a transposed-form structure, and such that the digital filter has same transfer function as the direct-form digital filter and the transposed-form digital filter.

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