Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2005-06-07
2005-06-07
Sedighian, M. R. (Department: 2633)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S025000, C398S026000, C398S202000, C398S208000
Reexamination Certificate
active
06904237
ABSTRACT:
In an optical fiber communication system, for signal monitoring a transparent optical network (all-optical networks), i.e. a system without digital intermediate regeneration, the bit error probability (BEP) is calculated by dismodulating and sampling the signal and generating an amplitude histogram. This histogram serves mainly for modeling the signal distortions. A family of amplitudes that represent the average of a noise-infested sub-signal is determined from the histogram for each status of the signal (logical “0” or “1”). The variance of the individual noise signal overlaid on every amplitude value is calculated from the parameters of the receiver as well as from the optical signal-to-noise ratio (OSNR). The bit error probability is calculated with adequate precision from these parameters.
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Rasztovits-Wiech Michael
Studer Klaus
Bell Boyd & Lloyd LLC
Sedighian M. R.
Siemens Aktiengesellschaft
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