Forward error correction with self-synchronous scramblers

Details Forward error correction with self-synchronous scramblers Forward error correction with self-synchronous scramblers

2011-03-22

2011-03-22

Abraham, Esaw T (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S775000, C714S777000, C714S758000

Reexamination Certificate

active

07913151

ABSTRACT:
Systems and methods correct multiplied errors generated by feedback taps in self-synchronous descramblers. The multiplication of errors degrades the performance of most linear cyclic error check codes. Disclosed techniques are general applicable to multiplied errors even when those errors are not confined to a single block. Disclosed techniques permit a reduction in the amount of forward error correction used. For example, in general, to correct t errors, a linear cyclic error correction code requires a Hamming distance of at least 1+(2t)[wt(s(x))]. Embodiments of the invention allow correcting the multiplied errors with a Hamming distance of only 1+(t)(1+wt(s(x))) over the block size n, wherein wt(s(x)) is the weight of the scrambler polynomial s(x).

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