Probability Propagation in Analog VLSI

The sum-product algorithm (probability propagation) can be mapped directly into analog transistor circuits. These circuits enable the construction of analog-VLSI decoders for turbo codes, low-density parity-check codes, and similar codes. Patent application pending. This research was supported by the Swiss National Science Foundation under Grant 21-49619.96. Endora Tech AG, Gartenstrasse 120, CH-4052 Basel, Switzerland. E-mail: haloeliger@access.ch ISI / Electrical Eng., ETH Zentrum, CH-8092 Zürich, Switzerland. E-mail: lustenbe@isi.ee.ethz.ch ISI / Electrical Eng., ETH Zentrum, CH-8092 Zürich, Switzerland. E-mail: helfenst@isi.ee.ethz.ch Endora Tech AG, Gartenstrasse 120, CH-4052 Basel, Switzerland. E-mail: ftarkoey@access.ch