Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Reexamination Certificate
2005-09-27
2005-09-27
Urban, Edward F. (Department: 2685)
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
C455S288000, C708S313000, C375S350000
Reexamination Certificate
active
06950643
ABSTRACT:
The invention features a filter arrangement for filtering an input signal that includes a transmitter signal having a predetermined pulse shape at a receiving end to transmit the input signal, a decimation filter to decimate the input signal that includes a passband frequency range and a wide transition frequency range with an amplitude attenuation, and a matching filter to match the input signal to the pulse shape of the transmitter signal. Such filter arrangements also feature passband frequency ranges for decimation filters which are smaller than the ranges for matching filters.
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PCT International Search Report, Feb. 23, 2001, EPO.
Gevargiz, et al., “Analysis of Digital Matched Filtering Schemes for Digital Receiver Applications Using Simulation Methods,” Proceedings of the Global Telecommunications Conference, New York, Dec. 1991, pp. 1556-1563.
German Office Action, May 31, 2000.
Menkhoff Andreas
Schoellhorn Peter
Fish & Richardson P.C.
Jackson Blane J.
Urban Edward F.
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