Interleaving apparatus and method for symbol mapping in an HSDPA mobile communication system

  • US 7,200,792 B2
  • Filed: 12/20/2002
  • Issued: 04/03/2007
  • Est. Priority Date: 12/21/2001
  • Status: Active Grant
First Claim
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1. An apparatus for data transmission in a communication system, comprising:

  • a turbo encoder for coding data bits to generate systematic bits and parity bits;

    a rate matcher for rate matching the systematic bits and parity bits;

    a first interleaver for writing the rate-matched systematic bits on a row by row basis, and performing inter-column permutation;

    a second interleaver for writing the rate-matched parity bits on a row-by-row basis, and performing inter-column permutation;

    a modulator for alternatively collecting the permutated bits on a column by column basis from the first interleaver and the second interleaver, and mapping collected bits from the first interleaver and second interleaver onto one modulation symbol,wherein a size of the first interleaver is equal to a size of the second interleaver.

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