Decoding concatenated codes via parity bit recycling
OwnerDo-Jun Rhee, Masaki Satoinventors
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Abstract
A method, apparatus and article of manufacture for decoding concatenated codes includes (in terms of the method): receiving data representing concatenated codes; first inner decoding the received data resulting in first inner message data and parity data; first outer decoding the first inner message data, resulting in reliability information and first outer message data; second inner decoding the first outer message data, resulting in second inner message data; and second outer decoding the second inner message data. The second inner decoding is a function of: the reliability information from the first outer decoding; the first outer message data; and the parity data from the first inner decoding.
Claims22
A method of decoding concatenated codes, the method comprising:
- receiving data representing concatenated codes;
- first inner decoding the received data resulting in first inner message data and parity data;
- first outer decoding the first inner message data, resulting in reliability information and first outer message data;
- second inner decoding the first outer message data, resulting in second inner message data, the second inner decoding being a function of
- the reliability information from the first outer decoding,
- the first outer message data, and
- the parity data from the first inner decoding;
- and
- second outer decoding the second inner message data.
An apparatus for decoding concatenated codes, the apparatus comprising:
- a first inner decoder to receive and decode data representing concatenated codes, resulting in first inner message data and parity data;
- a first outer decoder to decode the first inner message data, resulting in reliability information and first outer message data;
- a second inner decoder to decode the first outer message data, resulting in second inner message data, the second inner decoder being operable to decode as a function of
- the reliability information from the first outer decoder,
- the first outer message data, and
- the parity data from the first inner decoder;
- and
- a second outer decoder to decode the second inner message data.
An apparatus for decoding concatenated codes, the apparatus comprising:
- first inner means for receiving and decoding data representing concatenated codes, resulting in first inner message data and parity data;
- first outer means for decoding the first inner message data, resulting in reliability information and first outer message data;
- second inner means for decoding the first outer message data, resulting in second inner message data, the second inner means being operable as a function of
- the reliability information from the first outer means,
- the first outer message data, and
- the parity data from the first inner means;
- and
- second outer means for decoding the second inner message data.
Dependencies are inferred from the claim text.