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US 8,077,260 B2Granted
Co-channel interference detector
AssigneeThomson Licensing
InventorAaron Reel Bouillet
Life of this patent
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Abstract
A receiver processes a received signal for determining the presence of a co-channel interfering signal by (a) measuring a power level of a first signal in a first narrowband frequency region of a wideband frequency channel; (b) measuring power levels of signals in narrowband frequency regions adjacent to the first narrowband frequency region; and (c) determining if the first signal is an interfering signal in the wideband frequency channel as a function of the measured power levels.
Claims19
A method for use in a receiver, the method comprising:
- (a) measuring a power level of a first signal in a first narrowband frequency region of a wideband frequency channel;
- (b) measuring power levels of signals in narrowband frequency regions adjacent to the first narrowband frequency region;
- and
- (c) determining if the first signal is an interfering signal in the wideband frequency channel as a function of the measured power levels.
1 more element
Apparatus comprising:
- an adjustable narrowband filter for filtering a received wideband signal in three narrowband frequency regions for providing three filtered narrowband signals, wherein one narrowband frequency region is adjacent to the other two narrowband frequency regions;
- and
- a power detector for measuring a power level of each of the three filtered narrowband signals and for determining if an interfering signal is present as a function of the measured power levels.
Dependencies are inferred from the claim text.