Analog/digital conversion with adjustable thresholds

摘要

A device for receiving a distorted signal, in particular an optical signal converted by an opto/electrical converter, comprises an analog/digital converter ( 1 ) with adjustable thresholds and a Viterbi equalizer ( 10 ). The device further comprises a histogram estimator ( 13 ) for determining a probability density function of the distorted signal and a threshold estimator ( 4 ) for dynamically adjusting at least one threshold of the analog/digital converter ( 1 ) in an overlap region of a first signal amplitude attributed to a first symbol (sigma₁₀, X₁₀) and a second signal amplitude attributed to a second symbol (sigma₁₁, X₁₁) of the probability density function.