Patent ReferencesLarge constraint length high speed viterbi decoder based on a modular hierarchial decomposition of the deBruijn graph Error correction systems with modified Viterbi decoding Simplified trellis decoder Decoding method for trellis codes with large free distances Patent #: 5703911 InventorsApplicationNo. 002563 filed on 12/31/1997US Classes:375/341, Maximum likelihood decoder or viterbi decoder714/795, Viterbi decoding714/796Branch metric calculationExaminersPrimary: Le, Amanda T.Attorney, Agent or FirmForeign Patent References
International ClassH04L 001/00AbstractA decoder for decoding a data signal using a non-binary trellis diagram by designating binary butterfly trellises within the non-binary trellis is disclosed. The decoder analyzes each designated binary butterfly trellis using the basic Viterbi binary butterfly operation to generate a pair of pathways to each node of the non-binary trellis. The pathways for each node from the basic binary butterfly operations are compared to determine the survivor path for that node.Other References
| |