Apparatus and method for computing LLR

Details Apparatus and method for computing LLR Apparatus and method for computing LLR

2011-03-29

2011-03-29

Alphonse, Fritz (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S796000

Reexamination Certificate

active

07917834

ABSTRACT:
Provided are an apparatus and method for efficiently computing a log likelihood ratio (LLR) using the maximum a posteriori (MAP) algorithm known as block combining. The method includes the steps of: calculating alpha values, beta values and gamma values of at least two time sections; calculating transition probabilities of respective states in the at least two time sections; performing a comparison operation for some of the transition probabilities to determine the highest value, selecting one of the other transition probabilities according to the determined high value, comparing the determined value with the selected value to select the higher value, and thereby obtaining the highest of the transition probabilities; and determining an operation to apply according to the highest transition probability and calculating an LLR.

REFERENCES:
patent: 6304996 (2001-10-01), Van Stralen et al.
patent: 6516437 (2003-02-01), Van Stralen et al.
patent: 7246298 (2007-07-01), Chiueh et al.
patent: 7464316 (2008-12-01), Bickerstaff et al.
patent: 7571369 (2009-08-01), Wang et al.
patent: 2004/0205445 (2004-10-01), Xu
patent: 2007/0050694 (2007-03-01), Bickerstaff et al.
patent: 1154578 (2001-11-01), None
patent: 1383246 (2004-01-01), None
patent: 10-2000-0005787 (1999-06-01), None
patent: 10-2000-0021055 (2000-04-01), None
patent: 10-2005-0042869 (2000-05-01), None
patent: 10-2000-0073312 (2000-12-01), None
patent: 10-2001-0091163 (2001-10-01), None
patent: 10-2003-0042687 (2003-06-01), None
patent: 10-2005-0111842 (2004-05-01), None
patent: 10-2005-0111843 (2004-05-01), None
patent: 10-2004-0096355 (2004-11-01), None

Affiliated with

Also associated with

Rating

Apparatus and method for computing LLR does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for computing LLR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for computing LLR will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2719587