Time-domain equalization for discrete multi-tone systems

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

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C375S350000

Reexamination Certificate

active

07916801

ABSTRACT:
A multiple carrier communication system includes a primary impulse shortening filter that receives an output signal of an analog to digital converter and accepts coefficients. A secondary impulse shortening filter receives the output signal of the analog to digital converter, outputs an output signal, and passes coefficients to the primary impulse shortening filter. A reference signal generator outputs a reference signal. A comparator compares the output signal and the reference signal and outputs a resulting error signal. An adaptive processor computes coefficients for the secondary impulse shortening filter based on the error signal.

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