Electrical computers: arithmetic processing and calculating – Electrical analog calculating computer – Particular function performed
Reexamination Certificate
2007-11-06
2007-11-06
Mai, Tan V. (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical analog calculating computer
Particular function performed
Reexamination Certificate
active
10679107
ABSTRACT:
A decision feedback equalizer finite impulse response (DFE FIR) filter for cancelling inter-symbol interference within a signal transmitted through a communication channel. The DFE FIR filter includes a feed-forward equalization path to receive the signal transmitted through the communication channel and generate a first partially equalized signal from the signal based on a plurality of coefficients associated with the feed-forward equalization path; a feedback equalization path to generate a second partially equalized signal that corrects for the inter-symbol interference within the signal based on an output of the DFE FIR filter; a summer to combine the first partially equalized signal with the second partially equalized signal; and a signal amplifier to receive the combined signal from the summer and generate the output of the DFE FIR filter.
REFERENCES:
patent: 2002/0168002 (2002-11-01), Birru
patent: 2003/0219085 (2003-11-01), Endres et al.
patent: 2003/0223505 (2003-12-01), Verbin et al.
patent: 2004/0008765 (2004-01-01), Chung et al.
Mai Tan V.
Plexus Networks, Inc.
Sawyer Law Group LLP
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