Emittor/receiver in communication system and control method thereof

Emittor/receiver in communication system and control method thereof

  • CN 1,838,543 B
  • Filed: 03/13/2006
  • Issued: 09/02/2015
  • Est. Priority Date: 03/11/2005
  • Status: Active Grant
First Claim
Patent Images

1. the transmitter in communication system, it comprises:

  • Encoder, is used for preset encoding scheme coding information data bit when inputting information data bits, and produces low density parity check codewords;

    Channel interleaver, for this low density parity check codewords that interweaves according to preset channels interlacing rule;

    WithModulator, for the low density parity check codewords interweaved with preset modulation scheme modulation channel, and produces modulation symbol,Wherein the variable node in the factor graph of low density parity check codewords with minuent is mapped as the bit with high reliability in modulation symbol bit by this channel interleaving rule,Wherein the variable node in the factor graph of low density parity check codewords with short length averaging loop is mapped as the bit in modulation symbol bit with high reliability by this channel interleaving rule, described short length is less than presetting length, and this averaging loop is the value by the length summation of all circulations be connected with the variable node in the factor graph of low density parity check codewords being obtained divided by the quantity of all circulations.

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