Method and apparatus for acquiring wide-band pseudorandom noise encoded waveforms
AssigneeData Fusion Corporation
InventorsWolfgang Kober, John K. Thomas
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Abstract
The method and apparatus of the present invention is directed to architectures for signal processing, such as for performing analog-to-digital and digital-to-analog conversions, in which the source signal is decomposed into subband signals by an analysis filter, processed, and the processed subband signals combined to form a reconstructed signal that is representative of the source signal.
Claims56
A method for acquiring a signal having a bandwidth, comprising:
- decomposing the signal into a plurality of signal segments, each signal segment having a signal segment bandwidth that is less than the signal bandwidth;
- processing each of the signal segments to form a plurality of processed signal segments;
- and
- combining the processed signal segments into a composite signal, wherein the signal is in one of analog or digital form and the composite signal is in the other one of analog or digital form, and wherein the processing step includes removing a noise component from each of the signal segments to form a corresponding plurality of noise reduced signal segments and thereafter converting each of the noise reduced signal segments from one of analog or digital form to the other one of analog or digital form.
A method for reducing noise in a signal having a bandwidth, comprising:
- decomposing the signal into at least a plurality of signal segments, each signal segment having a bandwidth that is less than the bandwidth of the signal and
- removing a noise component from each of the signal segments to form a corresponding plurality of processed signal segments.
A system for reducing noise in a signal having a bandwidth, comprising:
- means for decomposing the signal into at least a plurality of signal segments, each signal segment having a bandwidth that is less than the bandwidth of the signal and
- means for removing a noise component from each of the signal segments to form a corresponding plurality of processed signal segments.
A method for reducing noise in a first signal having a first bandwidth, comprising:
- decomposing the first signal into a plurality of subband signals, each subband signal having a bandwidth that is less than the first bandwidth;
- rejecting a noise component of at least one of the subband signals;
- and
- thereafter combining at least a portion of the subband signals to form a second signal.
A system for reducing noise in a first signal having a first bandwidth, comprising:
- means for decomposing the first signal into a plurality of subband signals, each subband signal having a bandwidth that is less than the first bandwidth;
- means for rejecting a noise component of at least one of the subband signals;
- and
- means for combining each of the subband signals to form a second signal.
A system for reducing noise in a first signal having a first bandwidth, comprising:
- a decomposition filter bank that decomposes the first signal into a plurality of subband signals, each subband signal having a bandwidth that is less than the first bandwidth;
- and
- a noise rejecter that rejects at least a portion of a noise component in at least a portion of the subband signals.
Dependencies are inferred from the claim text.