Pulse or digital communications – Equalizers
Reexamination Certificate
2006-11-14
2006-11-14
Kim, Kevin (Department: 2611)
Pulse or digital communications
Equalizers
C375S262000, C375S265000, C708S322000, C708S323000, C714S001000, C714S048000
Reexamination Certificate
active
07136413
ABSTRACT:
A receiver includes a Viterbi-like equalizer that provides diversity combining of soft values to produce reliability information. The output reliability information at time k is the average of the first reliability information at time k and the second reliability information at time (k−1) after being normalized by the noise power. The first reliability information at time k is the difference between the two accumulated metrics of the two preceding nodes arriving at the same node having the global minimum node metric at time k over all transitions of all states. The second reliability function at time k is the difference between the best accumulated metric characterized by the last (L−1) bit being binary “one” and the best accumulated metric characterized by the last (L−1) bit being binary “zero.”
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Hwang Ho-Chi
Su Ching-Yao
Sun Wei-nan
Hogan & Hartson LLP
Kim Kevin
Mediatek Inc.
Wong Linda
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