Please download the dossier by clicking on the dossier button x
×

METHODS AND APPARATUS FOR SENSING THE PRESENCE OF A TRANSMISSION SIGNAL IN A WIRELESS CHANNEL

  • US 20100035557A1
  • Filed: 08/05/2008
  • Published: 02/11/2010
  • Est. Priority Date: 08/05/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method for sensing the presence of a transmission signal type within a wireless channel in a wireless communication system, the method comprising:

  • calculating a spectral density estimate of a signal on the wireless channel;

    comparing a first test value derived from the calculated spectral density estimate to a first threshold;

    making a preliminary determination of the presence of the transmission signal type if the first test value exceeds the first threshold; and

    sensing the presence of the signal type after a preliminary determination of the presence of the signal type is made by determining that an observed spectral density of a prescribed signal added to the signal on the wireless channel matches a model estimate of the spectral density of the prescribed signal by at least a predetermined degree.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×