| 摘要 |
Continuously interleaved codewords are used in a communication system to provide error correction capability. In general, each codeword shares symbols with both preceding and subsequent codewords, when the codewords are arranged in an order, such that correction of symbols in any one codeword also corrects symbols in another codeword and correction of symbols in any codeword may allow, considering possible corrections of intermediate codewords, for further correction of any codeword in the order of codewords. In one embodiment received information may be arranged in subframes, with each subframe including terminal symbols of a plurality of codewords, each of the plurality of codewords including symbols in multiple subframes. |
| 主权项 |
1. Circuitry for error correction encoding, comprising:
encoder circuitry for forming a stream of codewords for transmission using a Bose Chaudhuri Hocquenghem (BCH) code, each codeword for transmission having n codeword symbols and each codeword for transmission formed using k symbols such that each codeword includes n-k symbols of redundant information, and, at least after at least formation ofn2-1codewords for transmission, each of the codewords for transmission having at least some of the codeword symbols being symbols of previously formed codewords for transmission, the stream of codewords including a number of codewords several orders of magnitude greater than k, wherein n and k are integer numbers, and at least some of the symbols of previously formed codewords are symbols of redundant information of the previously formed codewords, wherein the codewords are arranged into subframes of 32640 symbols, of which 2048 are symbols of redundant information with transmission arranged such that the symbols of redundant information are transmitted subsequent to symbols of non-redundant information for the subframe; and
decoder circuitry for iteratively decoding, using a syndrome generator, received codewords of a second stream of information comprised of received symbols, each received symbol of each received codeword being in at least two received codewords, with at least some of the symbols of any particular received codeword of the received codewords being in predecessor received codewords to the particular received codeword in the second stream of information, each codeword having initial symbols and a final 510 symbols, the final 510 symbols including 478 symbols of information and 32 symbols of redundant information, each of the final 510 symbols also being symbols of subsequently formed codewords, wherein the final 510 symbols are not symbols of the previously formed codewords. |
