Method and apparatus for generation of reliability...

Details Method and apparatus for generation of reliability... Method and apparatus for generation of reliability...

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.”

REFERENCES:
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patent: 5530725 (1996-06-01), Koch
patent: 5844946 (1998-12-01), Nagayasu
patent: 6012161 (2000-01-01), Ariyavisitakul et al.
patent: 6269116 (2001-07-01), Javerbring et al.
patent: 6633615 (2003-10-01), Pekarich et al.
patent: 6782060 (2004-08-01), Hartmann et al.
patent: 6963546 (2005-11-01), Misra et al.

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