Method and apparatus for forward error correction in a...

Details Method and apparatus for forward error correction in a... Method and apparatus for forward error correction in a...

2005-12-13

2008-11-11

Baker, Stephen M (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Data formatting to improve error detection correction...

C714S755000, C714S776000

Reexamination Certificate

active

07451361

ABSTRACT:
Method and apparatus for encoding transport stream packets is described. In one example, frames of transport stream packets are block coded to produce block coded symbols. The block coded symbols are interleaved for each of the frames using convolutional interleaving to produce interleaved data. The interleaved data is randomized. The interleaved data is set partitioned for each of the frames into un-coded bits and bits to be encoded. For each of the frames: A low density parity check (LDPC) code is applied to the bits to be encoded to generate a codeword having information bits and parity bits. Groups of interleaved bits are generated from bits in the codeword. Symbols formed from the groups of interleaved bits and the un-coded bits are mapped to points in a quadrature amplitude modulation (QAM) constellation.

REFERENCES:
patent: 6826140 (2004-11-01), Brommer et al.
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patent: 2002/0150167 (2002-10-01), Demjanenko et al.
patent: 2005/0246616 (2005-11-01), Choi et al.
patent: 2006/0092902 (2006-05-01), Schmidt

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