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Low complexity channel decoders

  • US 7,243,295 B2
  • Filed: 06/12/2001
  • Issued: 07/10/2007
  • Est. Priority Date: 06/12/2001
  • Status: Active Grant
First Claim
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1. A method for decoding channel-encoded date comprising:

  • (a) receiving encoded symbols;

    (b) compressing the encoded symbols to obtain compressed symbols;

    (c) decoding the compressed symbols using a first look-up table that stores information approximating output of an algorithmic decoding process to obtain decoded symbols;

    (d) arithmetically combining the compressed symbols with the decoded symbols to obtain a first result;

    (e) decompressing the first result to obtain a decompressed first result(f) interleaving the decompressed first result to obtain an interleaved first result;

    (g) compressing the interleaved first result to obtain a compressed, interleaved first result;

    (h) decoding the compressed, interleaved first result using a second look-up table that stores information approximating output of an algorithmic decoding process to obtain a decoded first result(i) arithmetically combining the decoded first result with the compressed, interleaved first result to obtain a second result;

    (j) decompressing the second result to obtain a decompressed second result; and

    (k) de-interleaving the decompressed second result.

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