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Wireless terminal methods and apparatus for DC tone special treatment

  • US 7,539,475 B2
  • Filed: 09/16/2005
  • Issued: 05/26/2009
  • Est. Priority Date: 07/08/2005
  • Status: Active Grant
First Claim
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1. A method of operating a wireless terminal in a frequency division multiplexed system wherein signals are transmitted in a passband by a base station, the method comprising:

  • receiving a passband signal;

    converting said received passband signal to a baseband signal, a DC tone existing in said baseband, the DC tone corresponding to a corresponding tone in said passband signal, the baseband signal including additional baseband tones corresponding to additional passband tones; and

    performing a signal measurement on said DC tone during a DC tone noise measurement period to generate a DC noise measurement value.

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