Method and system for spectral suppression of noise in a communication signal
AssigneeHRL Laboratories, LLC
InventorOleg M. Efimov
Life of this patent
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Abstract
A method and system for spectral suppression of a noise in a communication signal. The method includes transmitting a communication signal through a plurality of rejection filters to create a plurality of spectral holes over a spectrum of the communication signal. The communication signal with an acquired noise is received. Noise intensities of the acquired noise at the plurality of spectral holes are measured, and the acquired noise over the spectrum of the communication signal is calculated. The acquired noise is subtracted from the communication signal with the acquired noise.
Claims20
A method for spectral suppression of a noise in a communication signal, the method comprising:
- processing a communication signal through a plurality of rejection filters to create a plurality of spectral holes over a spectrum of the communication signal, signal content of portions of the communication signal being rejected in the spectral holes;
- transmitting the processed communication signal;
- receiving the processed communication signal with an acquired noise that is acquired after creating the plurality of spectral holes;
- measuring noise intensities of the acquired noise at the plurality of spectral holes;
- calculating of the acquired noise over the spectrum of the communication signal;
- subtracting the acquired noise from the processed communication signal with the acquired noise;
- and
- summarizing the signal content of portions of the processed communication signal between the plurality spectral holes.
A method for noise suppression in multi-channel communication at different communication wavelength intervals, the method comprising:
- processing each of a plurality of communication signals at different wavelengths separated by a plurality of wavelength intervals through at least one rejection filter to create at least one spectral hole over a spectrum of each of the communication signals, signal content of a portion of the spectrum being rejected in the at least one spectral hole;
- transmitting each of the processed communication signals;
- receiving each of the processed communication signals with an acquired noise that is acquired after creating the at least one spectral hole;
- measuring at least one noise intensity of the acquired noise at the at least one spectral hole;
- calculating of the acquired noise over the spectrum of each of the communication signals;
- subtracting the acquired noise from each of the processed communication signals with the acquired noise;
- and
- summarizing each of the processed communication signals at different wavelengths separated by the plurality of wavelength intervals.
A system for spectral suppression of a noise in a communication signal, the system comprising:
- a plurality of rejection filters;
- a transmitter adapted to process a communication signal through the plurality of rejection filters to create a plurality of spectral holes over a spectrum of the communication signal, signal content of portions of the spectrum being rejected in the spectral holes, and to transmit the processed communication signal;
- and
- a plurality of detectors adapted to receive the processed communication signal with an acquired noise, to measure noise intensities inside the spectral holes where the communication signal is absent, and to summarize signal content of portions of the processed communication signal between the spectral holes.
A system for spectral suppression of a noise in a communication signal, the system comprising:
- means for processing a communication signal to create a plurality of spectral holes over a spectrum of the communication signal, signal content of portions of the spectrum being rejected in the spectral holes;
- means for transmitting the processed communication signal;
- means for receiving the processed communication signal with an acquired noise that is acquired after creating the plurality of spectral holes;
- means for measuring noise intensities of the acquired noise at the plurality of spectral holes;
- means for calculating of the acquired noise over the spectrum of the communication signal;
- and
- means for subtracting the acquired noise from the processed communication signal.
Dependencies are inferred from the claim text.