Resources Contact Us Home
Method and apparatus for automated correlation of digital modulation impairment

Image Number 7 for United States Patent #7016401.

A method and apparatus for automated correlation of digital modulation impairment is described. The technique obtains soft decision data (116, 2502) and extracts signal space location information of sufficient resolution to distinguish different types of impairment to a digitally modulated signal. The technique applies an error vector magnitude mask (117, 502) and determines the signal-to-noise ratio of the digitally modulated signal. The technique applies impairment masks (118, 2504) and provides a characterization (119) of impairment affecting the digitally modulated signal (112). The technique determines a subset of the soft decision data (116, 2502) that falls within the impairment masks (118, 2505) and calculates correlation weights (2506). The technique may be used to identify, isolate, and classify different types of impairment. Given sufficient data collection, sources of impairments may be determined precisely.

  Recently Added Patents
Image forming apparatus and image forming method
Grounding fitting
Methods and systems to reduce a number of simulations in a timing analysis
Manipulation of an alternative respiratory pathway in photo-autotrophs
Motor with power-generation coil module
Woven mesh substrate with semiconductor elements, and method and device for manufacturing the same
Configurable memory controller/memory module communication system
  Randomly Featured Patents
Multi-band planar inverted-F antennas including floating parasitic elements and wireless terminals incorporating the same
Higher order mode dispersion compensating fiber and mode converter for higher order fiber
Oxygen sensor
Protection of plants against plant pathogens
Truck light bar
Radioimmunoassay of thymosin.alpha.
Composition, synthesis and use of isonitriles
Shoe press belt and manufacturing method
Upgradeable connector module for use in a fiber administration system
Gripping tool