Iterative decoding of concatenated low-density parity-check codes
First Claim
1. An apparatus comprising a node having a first decoder to decode a codeword and a second decoder to decode a soft output received directly from the first decoder, the node to iterate decoding jointly by the first decoder and the second decoder as a number of common iterations, each common iteration comprising a number of first decoder iterations and a number of second decoder iterations.
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Abstract
Techniques to perform iterative decoding of concatenated low-density parity-check codes (LDPC) are described. Iterative decoding of the concatenated code is achieved by performing T common iterations, wherein a common iteration comprises t1 decoding iterations on the inner LDPC code my means of a first decoder (340) followed by t2 decoding iterations on the outer LDPC code my means of a second decoder (350) , and wherein the two decoders exchange soft-output information.
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Citations
20 Claims
- 1. An apparatus comprising a node having a first decoder to decode a codeword and a second decoder to decode a soft output received directly from the first decoder, the node to iterate decoding jointly by the first decoder and the second decoder as a number of common iterations, each common iteration comprising a number of first decoder iterations and a number of second decoder iterations.
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6. A system, comprising:
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a communications medium; and a node to couple to the communications medium, the node having a first decoder to decode a codeword and a second decoder to decode a soft output received directly from the first decoder, the node to iterate decoding jointly by the first decoder and the second decoder as a number of common iterations, each common iteration comprising a number of first decoder iterations and a number of second decoder iterations. - View Dependent Claims (7, 8, 9, 10)
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11. A computer-implemented method comprising:
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performing a first decoding for a codeword using a first decoder; performing, using a second decoder, a second decoding for a soft output received directly from the first decoder; and iterating the first decoding and the second decoding jointly as a number of common iterations, each common iteration comprising a number of first decoder iterations and a number of second decoder iterations. - View Dependent Claims (12, 13, 14, 15)
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- 16. An article comprising a machine-readable storage medium containing instructions that if executed enable a system to perform a first decoding for a codeword using a first decoder, perform, using a second decoder, a second decoding for a soft output received directly from the first decoder, and iterate the first decoding and the second decoding jointly as a number of common iterations, each common iteration comprising a number of first decoder iterations and a number of second decoder iterations.
Specification