Multi-mode adaptive filter

Multiplex communications – Channel assignment techniques – Carrier sense multiple access

Reexamination Certificate

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Details

C375S232000

Reexamination Certificate

active

07016371

ABSTRACT:
A multi-mode device, capable of channel equalization and packet collision detection, includes a first switch, which is capable of receiving a transmit signal and a receive signal and outputting a filter input, which is multiplied by a first filter tap to generate a first product. The device also includes a delay unit for receiving the filter input and generating a delayed filter input, wherein the delayed filter input is multiplied by a second filter tap to generate a second product; an adder for adding the first product with the second product and generating a filter output; a decision block, which receives the filter output and generates a decision output; and a second switch capable of receiving the decision output, a training sequence and the receive signal and outputting a second switch output. The device generates an error signal using the filter output and the second switch output.

REFERENCES:
patent: 4507747 (1985-03-01), Houdard et al.
patent: 5203027 (1993-04-01), Nounin et al.
patent: 5499268 (1996-03-01), Takahashi
patent: 6778599 (2004-08-01), Doron
patent: 6870881 (2005-03-01), He

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