Method and system for providing short block length low...

Details Method and system for providing short block length low... Method and system for providing short block length low...

H - Electricity

03

M

H03M 13/13 (2006.01) H03M 13/15 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2685463

An approach is provided for encoding short frame length Low Density Parity Check (LDPC) codes. An encoder (203) generates a LDPC code having an outer Bose Chaudhuri Hocquenghem (BCH) code. Structure is imposed on the LDPC codes by restricting portion part of the parity check matrix to be lower triangular and/or satisfying other requirements such that the communication between bit nodes and check nodes of the decoder (305) is simplified. Further, a cyclic redundancy check (CRC) encoder (209) is supplied to encode the input signal according to a CRC code. This approach has particular application in digital video broadcast services over satellite.

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