Increasing error correction in data streams encoded with...

Details Increasing error correction in data streams encoded with... Increasing error correction in data streams encoded with...

2011-04-05

2011-04-05

Lamarre, Guy J (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S760000

Reexamination Certificate

active

07921351

ABSTRACT:
Disclosed is an apparatus and method for increasing the error correction capabilities of a receiver circuit that receives a data stream of encoded data symbols that are encoded with a linear block code. Analog and digital comparator circuits are used to detect laser clipping or analog to digital converter overloading. Corrupted symbols are detected by comparing in-phase and/or quadrature phase baseband signals with pre-determined threshold limits that indicate that the in-phase and quadrature phase signals have exceeded the normal signal trajectory of an unimpaired signal. Corrupted symbols may also be detected by determining that the laser has been clipped. Corrupted symbols are marked for erasure prior to decoding and error correction. Erasure of corrupted signals increases the error correction capabilities of the decoder circuit.

REFERENCES:
patent: 5875199 (1999-02-01), Luthi
patent: 6446236 (2002-09-01), McEwen et al.
patent: 2004/0240529 (2004-12-01), Leonard et al.
“Digital Communications, Fundamentals and Applications,” Bernard Sklar, The Aerospace Corporation, El Segundo, California, and University of California, Los Angeles, Section 5.5.5, P T R Prentice Hall 1988.

Affiliated with

Also associated with

Rating

Increasing error correction in data streams encoded with... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Increasing error correction in data streams encoded with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Increasing error correction in data streams encoded with... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2732324