Anadec Gmbh

Patrick Peter Merkli

Hans-Andrea Loeliger

Matthias Urs Frey

An analog electronic circuit is proposed that e.g. computes the symbol likelihoods for PAM or QAM signal constellations. The circuit has at least one set of M transistors connected to a common current source. A multiplier/adder generates the voltages to be applied to the transistors from a value y and a set of M expected values in such a way that the currents through the transistors correspond to the likelihood that the value y corresponds to the expected values. The circuit can be used for signal demodulation and various other applications.

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Baden, Switzerland

Patrick Peter Merkli