Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2005-12-07
2011-11-15
Payne, David C. (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S144000, C375S148000, C375S350000, C398S039000, C455S114200, C455S278100, C455S296000
Reexamination Certificate
active
08059768
ABSTRACT:
Narrow-band interference in spread spectrum systems is eliminated by performing a frequency spectrum transform on N sampling points of the data to obtain N points of data; after M transforms, getting an energy accumulation of individual data to obtain N energy values; removing partial excessive large values from the N energy values, averaging the rest, then calculating the threshold value for interference determination based on the average value; identifying all points that have energy values exceeding the threshold value, and performing interference suppression for the data of corresponding points after frequency spectrum transform and finally outputting the data after frequency spectrum inverse transform.
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Vartiainen, J., et al; “Estimation of Signal Detection Threshold by CME Algorithms”; Vehicular Technology Conference, IEEE 59th Milan, Italy, May 17-19, 2004; IEEE vol. 3, pp. 1654-1658, Piscataway NJ, US; (3 pages).
An International Search Report from corresponding International Application No. PCT/CN2005/002115.
Xiang Jiying
Yao Chunbo
Zhao Meng
Dsouza Adolf
Kolisch & Hartwell, P.C.
Payne David C.
ZTE Corporation
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