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System and method for joint source-channel encoding, with symbol decoding and error correction

  • US 20020016945A1
  • Filed: 03/24/2001
  • Published: 02/07/2002
  • Est. Priority Date: 03/27/2000
  • Status: Active Grant
First Claim
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1. A variable length symbol, joint source-channel encoding, symbol decoding and error correction system comprising:

  • encoder system;

    modulation-transmission means; and

    combination sequential, and encoded symbol, decoding systems;

    said encoder system comprising input means for accepting a sequential plurality of allowed input symbols and output means for outputting an encoded sequence of bits for allowed symbols input thereinto;

    said encoder system being functionally interconnected to said modulation-transmission means such that entry of a symbol to said encoder system results in said encoder means outputting an encoded sequence of bits therefore into said modulation-transmission means;

    said modulation-transmission means and combination sequential, and encoded symbol, decoding systems being functionally interconnected such that an encoded symbol sequence of bits entered to said modulation-transmission means enters said combination sequential, and encoded symbol, decoding systems;

    said sequential decoding system comprising a plurality of bistable elements;

    said encoded symbol decoding system comprising means for initiating an error correction routine to the end that, upon the detecting of the presence of an unexpected encoded reserved symbol a selection from the group consisting of;

    at least one bistable element in said sequential decoding means is changed; and

    selection is made of a series of sequential bits, said selection being made from a group consisting of a plurality of such series of sequential bits which result from the changing of bistable elements in said sequential decoder means;

    is performed;

    wherein said reserved symbol is not allowed as an input symbol to said symbol encoding system.

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