Pulse or digital communications – Transmitters – Antinoise or distortion
Patent
1995-04-28
1997-06-10
Chin, Stephen
Pulse or digital communications
Transmitters
Antinoise or distortion
332159, H04L 2549
Patent
active
056384033
ABSTRACT:
A method of low-splatter peak-to-average reduction for a linear communication system includes the step of sampling (1201) an input signal at a first rate, yielding a plurality of input samples. When at least one (1401, 1403, and 1405) of the plurality of input samples is above a first threshold, a local maximum (1401) is determined (1207) from among the plurality of input samples. At least one value (1407 and 1409) is interpolated (1207) between the local maximum and at least one sample (1405) adjacent to the local maximum. The at least one value and the local maximum are compared (1211) to determine which has the highest magnitude. The value having the highest magnitude (1407) is compared (1213) to a second threshold. When the value having the highest magnitude (1407) is above the second threshold, an attenuating window is centered (1505) at the value having the highest magnitude and applying (1507) the attenuating window to at least some of the plurality of input samples.
REFERENCES:
patent: 4780673 (1988-10-01), Hill
patent: 5287387 (1994-02-01), Birchler
Birchler Mark A.
Jasper Steven C.
Tziortzis Alek
Chin Stephen
Kim Kevin
Lukasik Susan L.
Motorola Inc.
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