Method and arrangements for determining the optical...

Details Method and arrangements for determining the optical... Method and arrangements for determining the optical...

2007-07-05

2011-10-18

Rodriguez, Armando (Department: 2828)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S194000, C398S209000

Reexamination Certificate

active

08041212

ABSTRACT:
According to the invention, various noise currents are added to the electrical data signal after the opto-electric conversion of an optical data signal, and an optimum decision threshold for the electrical data signal equipped with this noise current is determined for each noise current. Values for a median signal current and for a median noise current of the amplified spontaneous emission are subsequently determined from the value pairs of the optimum decision threshold and the added noise current in accordance with a computation rule that is based on a noise model, and the optimum signal-to-noise ratio is calculated from their quotient. The method may also be advantageously implemented by means of simple expansions of common receiver devices.

REFERENCES:
patent: 6351322 (2002-02-01), Ransford
patent: 1 303 062 (2003-04-01), None

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