Patent ID: 6961520
Filing Date: 2005-11-01
Classification: H04B

Abstract:
1. A method for measurement of an optical or electrical signal sequence (S) in an optical or electrical transmission system wherein a multitude of consecutive signals are sampled periodically at a sampling time (T 1 ) with at least one adjustable threshold value (SW), wherein a first probability (W 1 ) that a value of the signal sequence (S) at the sampling time (T 1 ) is above or below a first threshold value (SW 1 ) is measured, after a given period of time (t s ) the first threshold value (SW 1 ) is changed and a second probability (W 2 ) that the value of the signal sequence (S) at the sampling time (T 1 ) is above or below a second threshold value (SW 2 ) is measured and the first probability (W 1 ) is subtracted from the second probability (W 2 ).