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System and method for providing additional channels to an existing communications device

  • US 7,796,649 B2
  • Filed: 02/18/2004
  • Issued: 09/14/2010
  • Est. Priority Date: 02/18/2004
  • Status: Active Grant
First Claim
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1. A circuit for use in providing an additional channel comprising:

  • a sync and tracking unit coupled to a transmission input, the sync and tracking unit containing circuitry to synchronize the circuit to a timing of a transmission provided by the transmission input;

    a matched filter coupled to the sync and tracking unit, the matched filter containing circuitry to determine the timing of the transmission;

    a subframe generator containing circuitry to create a data unit for transmission on the additional channel; and

    a data generation unit coupled to the transmission input, the sync and tracking unit, and the subframe generator, the data generation unit containing circuitry to encode and modulate the data unit and to insert the data unit into the transmission.

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