Error mitigation system using line coding for optical WDM...

Details Error mitigation system using line coding for optical WDM... Error mitigation system using line coding for optical WDM...

2006-03-21

2006-03-21

Sedighian, M. R. (Department: 2633)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S025000, C398S039000, C398S159000, C711S217000, C714S701000

Reexamination Certificate

active

07016606

ABSTRACT:
An apparatus and method of line coding to mitigate collision induced errors in Wavelength Division Multiplexing (WDM) optical communications systems is disclosed. The apparatus and method prevents Soliton-Soliton-Collision induced errors by reducing a variance in a number of possible collisions between solitons in multiple channels in a WDM fiber optic communication system using a sliding window criterion. The sliding window criterion defines a set of parametric values based on physical properties of the transmission network, a transmission frequency and a defined data block size. N-bit codes are iteratively selected and sequentially assigned to segments of a mapping table indexed by all possible unique combinations of “1”s and “0”s in a block of data. Input data blocks are mapped to corresponding code words having a reduced number of transitions for transmission on the fiber optic network. Received code words are converted back to a data stream corresponding to the input data stream.

REFERENCES:
patent: 5638070 (1997-06-01), Kuwaoka
patent: 6079007 (2000-06-01), Emery et al.
patent: 6308249 (2001-10-01), Okazawa

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