| 摘要 |
A source sequence of information symbols is encoded according to each of a plurality of codes to produce a plurality of encoded sequences of symbols, a respective one of the plurality of codes producing a respective one of the plurality of encoded sequences of symbols from the source sequence of information symbols. The plurality of encoded sequences of symbols are combined to produce a sequence of communications symbols. The sequence of communications symbols is processed to produce a communications signal which is then communicated over a communications medium. The communicated communications signal is processed to produce an estimate of the source sequence of information symbols. The source sequence is preferably encoded according to a first error correction code to produce a first encoded sequence of symbols, and encoded according to a second error correction code to produce a second encoded sequence of symbols. The first and second encoded sequences of symbols preferably are multiplexed to produce the sequence of communications symbols. The first error correction code preferably comprises a random error correction code such as a binary convolutional code, while the second error correction code preferably comprises a burst error correction code, for example, a nonbinary convolutional code such as a dual-k convolutional code, thereby providing random and burst error correction capability.
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