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US 2009/0153748 A1Published application
Apparatus and Method for Sensing an ATSC Signal in Low Signal-To-Noise Ratio
OwnerWen Gao, Paul Gothard Knutson +1inventors
InventorsWen Gao, Paul Gothard Knutson, Joshua Lawrence Koslov
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Abstract
A Wireless Regional Area Network (WRAN) receiver includes a tuner for tuning to one of a number of channels, and a broadcast ATSC (Advanced Television Systems Committee) signal detector. The tuner is calibrated as a function of a received ATSC signal. The broadcast ATSC signal detector can be a coherent or a non-coherent ATSC signal detector.
Claims15
Apparatus comprising:
- a tuner for tuning to one of a number of channels;
- and
- a broadcast signal detector coupled to the tuner for detecting if a broadcast signal exists on at least one of the channels;
- wherein the tuner is calibrated as a function of a received broadcast signal.
1 more element
A method for use in a receiver, the method comprising:
- calibrating the receiver as a function of a received broadcast signal;
- and
- after performing the calibrating step, detecting if other broadcast signals exist in at least one portion of a frequency spectrum to determine an available portion of the frequency spectrum for use by the receiver.
Dependencies are inferred from the claim text.