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System and method for reducing noise in a recording receiver

  • US 7,437,136 B2
  • Filed: 08/29/2005
  • Issued: 10/14/2008
  • Est. Priority Date: 07/03/2001
  • Status: Expired due to Fees
First Claim
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1. A method for recording data from a wireless communication transmission with a receiver in a device that includes a digital processor, the method comprising:

  • disabling at least a portion of non-essential electronics including the digital processor when the receiver is in a receive mode;

    starting a capture sequence for the receiver in the receive mode;

    receiving the wireless communication transmission during the receive mode;

    identifying an received in-phase (I) signal and a received quadrature-phase (Q) signal from the received wireless communication transmission during the receive mode, wherein the received in-phase (I) signal and the received quadrature phase (Q) signal correspond to a complex base-band signal;

    digitizing the complex base-band signal from a captured transmission during the receive mode, wherein the digitized complex base-band signal comprises a digitized in-phase (I) signal and a digitized quadrature phase (Q) signal;

    storing the digitized complex base-band signal in a buffer without further processing;

    exiting the receive mode after the capture sequence is completed and after each digitized complex base-band signal is stored;

    re-enabling the previously disabled at least the portion of non-essential electronics including the digital processor after the receive mode is exited; and

    reassembling digital data from the wireless communication transmission using the previously stored digitized complex base-band signals with the digital processor when re-enabled after the receive mode is exited such that the effects of noise in the digitized complex base-band signal are minimized by disabling the at least the portion of non-essential electronics including the digital processor while the digitized complex base-band signal is received.

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