Marvell Asia Pte., Ltd.

Mario Alejandro Castrillion

Mario Rafael Hueda

Damian Alfonso Morero

Gabriel Infante

Matias German Schnidrig

Cristian Cavenio

Ramiro Rogelio Lopez

A method and structure for probabilistic shaping and compensation techniques in coherent optical receivers. According to an example, the present invention provides a method and structure for an implementation of distribution matcher encoders and decoders for probabilistic shaping applications. The techniques involved avoid the traditional implementations based on arithmetic coding, which requires intensive multiplication functions. Furthermore, these probabilistic shaping techniques can be used in combination with LDPC codes through reverse concatenation techniques.

Probabilistic shaping techniques for high performance coherent optical transceivers

A decoder for a receiver in a communication system includes an interface configured to receive encoded input data via a communication channel. The encoded input data includes forward error correction (FEC) codewords. A processor is configured to decode the FEC codewords using low density parity check (LDPC) codes defined by a parity check matrix. The parity check matrix is defined by both regular column partition (RCP) constraints and quasi-cyclic (QC) constraints. An output circuit is configured to output a decoded codeword based on the FEC codewords decoded by the processor.

Decoding fec codewords using ldpc codes define by a parity check matrix which is defined by rpc and qc constraints

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Santa Clara, CA, United States of America

Mario Alejandro Castrillion