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OUTPUT SIGNAL GENERATING METHOD, DECODED DATA GENERATING METHOD, OUTPUT SIGNAL GENERATING APPARATUS, AND DECODED DATA GENERATING APPARATUS

  • US 20150003564A1
  • Filed: 09/16/2014
  • Published: 01/01/2015
  • Est. Priority Date: 11/02/2006
  • Status: Active Grant
First Claim
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1. An output signal generating method comprising:

  • generating, by a processor, a plurality of encoded data sequences configured by a predetermined number of bits, by encoding transmit data configured by a plurality of bits;

    generating one symbol sequence by one modulating process, selected from a plurality of modulating processes, on the encoded data sequences; and

    outputting one baseband signal sequence generated by using an OFDM scheme, for the one symbol sequence, wherein;

    the one modulating process generates the one symbol sequence configured by QPSK symbols generated by using a QPSK scheme or 16QAM symbols generated by using a 16QAM scheme;

    the one symbol sequence generated by using the QPSK scheme is configured with first two encoded data sequences in the plurality of encoded data sequences;

    the one symbol sequence generated by using the 16QAM scheme is configured with the first two encoded data sequences and second two encoded data sequences in the plurality of encoded data sequences;

    a number of the 16QAM symbols is the same as a number of the QPSK symbols in the one symbol sequence;

    specific two bits extracted from a plurality of bits configuring the QPSK symbols and the 16QAM symbols in the one symbol sequence are bits belonging to the first two encoded data sequences;

    a number of the encoded data sequences is changed according to the selected one modulating process; and

    each of the encoded data sequences is configured with LDPC encoded data.

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