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APPARATUS AND METHOD FOR MODULATION/DEMODULATION FOR TRANSMITTING AND RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM

  • US 20170324605A1
  • Filed: 09/09/2015
  • Published: 11/09/2017
  • Est. Priority Date: 09/12/2014
  • Status: Active Grant
First Claim
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1. A modulation method in a transmitter that transmits a signal in a wireless communication system, the modulation method comprising:

  • determining a modulation scheme;

    converting encoded information bits to quadrature amplitude modulation (QAM) symbols according to a predetermined QAM modulation order if the determined modulation scheme corresponds to a particular modulation scheme;

    selecting a sequence corresponding to an element of an integer vector in a predetermined sequence set, repeating the converted QAM symbols for a predetermined sequence length;

    outputting a signal by multiplying the repeated QAM symbols by the selected sequence; and

    transmitting the output signal to a receiver.

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