Distortion compensating apparatus

Details Distortion compensating apparatus Distortion compensating apparatus

2007-08-22

2008-09-30

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

Reexamination Certificate

active

07430250

ABSTRACT:
The number of times of referring to of a storing unit in a distortion compensating apparatus is averaged and temporary degradation of the distortion property is avoided. The distortion compensating apparatus include a pre-distorting unit that applies a distortion compensating process to a transmission signal using a distortion compensation coefficient, a distortion compensation calculating unit that calculates a distortion compensation coefficient based on the transmission signal before the distortion compensation and a feedback fed back from an output of a distortion device, an address generating circuit that produces an address corresponding to the transmission signal, and a storing unit that updates the calculated distortion compensation coefficient to the produced address and that stores the produced address. The address generating circuit produces an address corresponding to the transmission signal by multiplying the power of the transmission signal by a predetermined coefficient and varies the predetermined coefficient.

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International Search Report mailed Jun. 28, 2005, from the corresponding International Application.

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