Distortion compensation apparatus

Details Distortion compensation apparatus Distortion compensation apparatus

2005-06-08

2008-10-07

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

Reexamination Certificate

active

07433421

ABSTRACT:
A distortion compensation apparatus is provided to restrain an increased calculation time caused by a large amount of calculation required for obtaining a phase variation amount for compensation from the correlation. The distortion compensation apparatus includes an update calculation section calculating a distortion compensation coefficient by use of an adaptive algorithm; a distortion compensation section performing distortion compensation to the transmission signal, based on the distortion compensation coefficient being read out from the distortion compensation coefficient storage; a correlation calculation section calculating a real part of correlation and an imaginary part of correlation of each the reference signal and the feedback signal; and a phase rotation section compensating a relative phase deviation between the reference signal and the feedback signal, based on the real part of correlation and the imaginary part of correlation calculated by the correlation calculation section, wherein the update calculation section calculates a distortion compensation coefficient using the post-compensation signal.

REFERENCES:
patent: 5404378 (1995-04-01), Kimura
patent: 6091941 (2000-07-01), Moriyama et al.
patent: 6751447 (2004-06-01), Jin et al.
patent: 6836517 (2004-12-01), Nagatani et al.
patent: 6864745 (2005-03-01), Ode et al.
patent: 7106133 (2006-09-01), Hamada et al.
patent: 7215717 (2007-05-01), Doi
patent: 7242247 (2007-07-01), Hirose et al.
patent: 2003/0080814 (2003-05-01), Ode et al.
patent: 2004/0212428 (2004-10-01), Ode et al.
patent: 2001-189685 (2001-07-01), None
patent: WO 03/103163 (2003-12-01), None

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