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Mobile terminal implementing a ranging signal receiver and method

  • US 20040203715A1
  • Filed: 10/16/2002
  • Published: 10/14/2004
  • Est. Priority Date: 10/16/2002
  • Status: Active Grant
First Claim
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1. A mobile terminal comprising:

  • a radio subsystem operable to receive a radio signal;

    a ranging signal receiving subsystem for receiving terrestrial ranging signals, a terrestrial ranging signal comprising synchronization bursts which are equally spaced in time;

    a common filter operatively connected to the radio subsystem and the ranging signal receiving subsystem, the common filter having a bandpass that is smaller than a bandwidth of the terrestrial ranging signal; and

    a correlation subsystem operatively connected to the common filter, the correlation subsystem operable to enable recovery of the synchronization bursts by correlating the terrestrial ranging signal with a known sequence that has been predistorted to account for the bandpass of the common filter.

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