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METHODS FOR IN-BAND SIGNALING THROUGH ENHANCED VARIABLE-RATE CODECS

  • US 20110287736A1
  • Filed: 07/18/2011
  • Published: 11/24/2011
  • Est. Priority Date: 09/15/2008
  • Status: Active Grant
First Claim
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1. A method for transmitting digital data in a voice channel connection of a digital wireless telecommunication system, the method comprising:

  • receiving digital input data;

    encoding the digital input data into a series of audio frequency tones;

    assembling the series of audio frequency tones into a data burst;

    applying a selected windowing function to the data burst, the windowing function comprising a tapered leading edge followed by a substantially constant amplitude data region, so as to form a windowed waveform burst having a substantially constant amplitude data region that includes the data burst; and

    inputting the windowed waveform burst to a transmission side vocoder for transmission over the voice channel connection of a digital wireless telecommunication system.

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