Signal analysis method and signal analysis module

A signal analysis apparatus for analyzing a pulse modulated input signal, the signal analysis apparatus comprising an input, a clock recovery circuit, and a signal decoder circuit,

• the input being configured to receive a pulse modulated input signal, the input signal comprising a symbol sequence,
• the clock recovery circuit being configured to recover a clock signal from the input signal, the clock signal being associated with the input signal,
• the signal decoder circuit being configured to sample the input signal based on the clock signal, thereby obtaining a set of input signal samples, each of the input signal samples having a certain level being constant over time,
• the signal decoder circuit being configured to determine at least two different levels input signal samples being associated with different symbols of the symbol sequence, and
• the signal decoder circuit further being configured to determine at least one decision threshold based on the at least two different levels, the decision threshold being associated with a symbol transition of the symbol sequence,
• wherein the signal decoder circuit is configured to determine a level difference between the at least two different levels, and wherein the signal decoder circuit is configured to determine the at least one decision threshold based on the level difference.

A signal analysis apparatus for analyzing a pulse modulated input signal, the signal analysis apparatus comprising an input, a clock recovery circuit, and a signal decoder circuit,

• the input being configured to receive a pulse modulated input signal, the input signal comprising a symbol sequence,
• the clock recovery circuit being configured to recover a clock signal from the input signal, the clock signal being associated with the input signal,
• the signal decoder circuit being configured to sample the input signal based on the clock signal, thereby obtaining a set of input signal samples, each of the input signal samples having a certain level being constant over time,
• the signal decoder circuit being configured to determine at least two different levels input signal samples being associated with different symbols of the symbol sequence, and
• the signal decoder circuit further being configured to determine at least one decision threshold based on the at least two different levels, the decision threshold being associated with a symbol transition of the symbol sequence,
• wherein the signal decoder circuit is configured to determine at least one of an average over several levels of input signal samples being associated with a maximum level, and an average over several levels of input signal samples being associated with a minimum level.