Decision feedback equalizer having adjusting device and...

Details Decision feedback equalizer having adjusting device and... Decision feedback equalizer having adjusting device and...

2011-07-12

2011-07-12

Deppe, Betsy (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

Reexamination Certificate

active

07978760

ABSTRACT:
A decision feedback equalizer having an adjusting device and method thereof are described. The decision feedback equalizer having an adjusting device includes a feed-forward filter, a decision device, a feedback filter, the adjusting device, and a summation device. The feed-forward filter generates a forwarding signal (Sff) based on an input signal (Si). The decision device generates a first decision (Sd1) signal and a second decision signal (Sd2) which are associated with the summation signal (Ssu). The feedback filter receives the second decision signal (Sd2) for generating a feedback signal (Sfb). The adjusting device adjusts the first decision signal (Sd1) according to a first weighting value (V1) for generating a first adjusted signal (Sa1) and transmitting the first adjusted signal (Sa1) to the feed-forward filter. The adjusting device further adjusts the feedback signal (Sfb) according to a second weighting value (V2) for generating a second adjusted signal (Sa2). The summation device receives the forwarding signal (Sff) and the second adjusted signal (Sa2) for generating a summation signal (Ssu) and issuing the summation signal (Ssu) to the decision device.

REFERENCES:
patent: 7110449 (2006-09-01), Heo et al.
patent: 2005/0129143 (2005-06-01), Kang et al.
patent: 2006/0291553 (2006-12-01), Nemer
patent: 2007/0058710 (2007-03-01), Chang

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