Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
April 1, 2014
Patent Application Number
13158263
Date Filed
June 10, 2011
Patent Citations Received
Patent Primary Examiner
Patent abstract
Digital communication coding methods resulting in rate-compatible low density parity-check (LDPC) codes built from protographs. Described digital coding methods start with a desired code rate and a selection of the numbers of variable nodes and check nodes to be used in the protograph. Constraints are set to satisfy a linear minimum distance growth property for the protograph. All possible edges in the graph are searched for the minimum iterative decoding threshold and the protograph with the lowest iterative decoding threshold is selected. Protographs designed in this manner are used in decode and forward relay channels.
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