Spectrum-sensing algorithms and methods
First Claim
1. A spectrum-sensing method, comprising:
- receiving an input spectrum having a plurality of channels;
performing a coarse scan of the plurality of channels of the input spectrum to determine one or more occupied candidate channels and vacant candidate channels, wherein the coarse scan is associated with a first resolution bandwidth and a first frequency sweep increment;
performing a fine scan of the occupied candidate channels and the vacant candidate channels to determine actually occupied channels and actually vacant channels, wherein the fine scan is associated with a second resolution bandwidth and a second frequency sweep increment; and
storing an indication of the actually occupied channels and the actually vacant channels.
1 Assignment
0 Petitions
Accused Products
Abstract
Spectrum-sensing algorithms and methods may be provided for use in cognitive radios and other applications. The spectrum-sensing algorithms and methods may include receiving an input spectrum having a plurality of channels, performing a coarse scan of the plurality of channels of the input spectrum to determine one or more occupied candidate channels and vacant candidate channels, where the coarse scan is associated with a first resolution bandwidth and a first frequency sweep increment, performing a fine scan of the occupied candidate channels and the vacant candidate channels to determine actually occupied channels and actually vacant channels, where the fine scan is associated with a second resolution bandwidth and a second frequency sweep increment, and storing an indication of the actually occupied channels and the actually vacant channels.
53 Citations
22 Claims
-
1. A spectrum-sensing method, comprising:
-
receiving an input spectrum having a plurality of channels; performing a coarse scan of the plurality of channels of the input spectrum to determine one or more occupied candidate channels and vacant candidate channels, wherein the coarse scan is associated with a first resolution bandwidth and a first frequency sweep increment; performing a fine scan of the occupied candidate channels and the vacant candidate channels to determine actually occupied channels and actually vacant channels, wherein the fine scan is associated with a second resolution bandwidth and a second frequency sweep increment; and storing an indication of the actually occupied channels and the actually vacant channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21)
-
-
13. A spectrum-sensing method, comprising:
-
providing an input radio frequency (RF) spectrum having a plurality of channels; analyzing the plurality of channels of the input RF spectrum using a coarse-scanning stage to determine one or more strong candidate channels, weak candidate channels, and vacant candidate channels, wherein the coarse-scanning stage is associated with a first resolution bandwidth and a first frequency sweep increment; analyzing the one or more strong candidate channels, weak candidate channels, and vacant candidate channels using a fine-scanning stage to determine actually occupied channels and actually vacant channels, wherein the fine-scanning stage is associated with a second resolution bandwidth and a second frequency sweep increment; and storing an indication of the actually occupied channels and the actually vacant channels. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 22)
-
Specification