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TRANSMITTING APPARATUS AND METHOD USING TONE RESERVATION IN OFDM SYSTEM

  • US 20090304097A1
  • Filed: 01/24/2007
  • Published: 12/10/2009
  • Est. Priority Date: 01/24/2006
  • Status: Abandoned Application
First Claim
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1. An apparatus for transmitting orthogonal frequency division multiplexing (OFDM) signals using a tone reservation scheme, the apparatus comprising:

  • an inserter to add a transmit format indicator (TFI) to an encoded packet, the TFI including a tone reservation rate for controlling a peak to average power ratio (PAPR);

    a reordering module to change order of bits included in the encoded packet by discriminating information bits and parity bits of the encoded packet;

    a zero replacement module to replace a portion of the parity bits with at least one bit set for controlling the PAPR;

    a transmitter to transmit the replaced output using a plurality of orthogonal sub-carriers; and

    a controller to control the tone reservation rate based on status of received signals.

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