Method And Apparatus For Cascade Encoding
First Claim
1. A cascade encoding method, comprising:
- A. performing Reed-Solomon (RS) encoding on inputted MediumAccess Control (MAC) packets, and outputting coded MAC packets; and
B. performing low density parity check code (LDPC) encoding on the coded MAC packets, and outputting LDPC encoding blocks.
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Abstract
A cascade encoding method and apparatus are applied to a handheld television system or other fields. The method includes the following: A. Reed-Solomon (RS) encoding is performed on inputted Medium Access Control (MAC) packets, and coded MAC packets are outputted; and B. Low density parity check code (LDPC) encoding is performed on the coded MAC packets, and LDPC encoding blocks are outputted. The apparatus includes an RS coder and an LDPC coder. The RS encoding and LDPC encoding are cascaded to encode an inputted code flow, so as to reduce an error rate. Meanwhile, bytes in one RS encoding data block are dispersed into different LDPC blocks to be encoded through byte interleaving, thereby sufficiently utilizing error code characteristics of the RS encoding and the LDPC encoding for decoding, and improving error correction capability of a system.
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Citations
20 Claims
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1. A cascade encoding method, comprising:
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A. performing Reed-Solomon (RS) encoding on inputted Medium Access Control (MAC) packets, and outputting coded MAC packets; and B. performing low density parity check code (LDPC) encoding on the coded MAC packets, and outputting LDPC encoding blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cascade encoding apparatus, comprising:
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an RS coder, adapted to perform RS encoding on inputted MAC packets and output coded MAC packets; and an LDPC coder, adapted to perform LDPC encoding on the coded MAC packets and output LDPC encoding blocks. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification