Coding and decoding a signal modified in accordance with the...

Details Coding and decoding a signal modified in accordance with the... Coding and decoding a signal modified in accordance with the...

2005-07-12

2005-07-12

Le, Amanda T. (Department: 2634)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S298000, C375S341000, C348S642000, C348S724000

Reexamination Certificate

active

06917655

ABSTRACT:
A data encoding system includes a modifier, an encoder, and a feedback. The modifier receives a first data stream and modifies the first data stream so as to provide a second data stream. The encoder encodes the second data stream in order to provide an output. At least a portion of the output has predetermined symbol values. A feedback from the encoder to the modifier provides encoder states to the modifier. The modifier modifies the first data stream based on the encoder states so as to facilitate the encoder in providing the portion of the output having the predetermined symbol values. A receiver receives a signal based on the output and decodes the signal.

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International Search Report in PCT/US00/14078.
S. Benedetto et al., “Parallel Concatenated Trellis Coded Modulation”, IEEE Trans. Inf. Th., (1996), pp. 974-978.

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