Power series predistorter and control method thereof

Details Power series predistorter and control method thereof Power series predistorter and control method thereof

2011-03-15

2011-03-15

Ghayour, Mohammad H (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S295000, C375S296000, C330S149000, C330S151000, C455S114300

Reexamination Certificate

active

07907678

ABSTRACT:
In a distortion generation path of a power series predistorter, a frequency characteristic compensator that adjusts the frequency characteristic of a distortion component is provided in series with an odd-order distortion generator. The output of a power amplifier is divided to obtain an output signal of the power amplifier, the output signal of the power amplifier is down-converted by a down converter, and a distortion detector detects a distortion component in the down-converted signal of base band. The frequency characteristic of the distortion component is split into windows each having a band width of Δf by a distortion component frequency characteristic splitter, and the power of the distortion component in each window is detected. Based on the detected power, the frequency characteristic compensator adjusts a part of the frequency characteristic of the distortion component associated with each window.

REFERENCES:
patent: 6275103 (2001-08-01), Maniwa
patent: 6359507 (2002-03-01), Myer
patent: 6549067 (2003-04-01), Kenington
patent: 6577192 (2003-06-01), Maniwa et al.
patent: 6717464 (2004-04-01), Fudaba et al.
patent: 6737918 (2004-05-01), Oishi et al.
patent: 7020447 (2006-03-01), Nagatani et al.
patent: 7142615 (2006-11-01), Hongo et al.
patent: 7170342 (2007-01-01), Suzuki et al.
patent: 2004/0116083 (2004-06-01), Suzuki et al.
patent: 2004/0189378 (2004-09-01), Suzuki et al.
patent: 2005/0101254 (2005-05-01), Sasaki et al.
patent: 2005/0168283 (2005-08-01), Suzuki et al.
patent: 2005/0189990 (2005-09-01), Mizuta et al.
patent: 2005/0190857 (2005-09-01), Braithwaite
patent: 2005/0237113 (2005-10-01), Matsuura et al.
patent: 2006/0023807 (2006-02-01), Shako et al.
patent: 2006/0067426 (2006-03-01), Maltsev et al.
patent: 1 193 866 (2002-04-01), None
patent: 1 429 453 (2004-06-01), None
patent: 2002-57533 (2002-02-01), None
patent: 2003-92518 (2003-03-01), None
patent: 2005-65211 (2005-03-01), None
Wolfgang Boesch, et al., “Measurement and Simulation of Memory Effects in Predistortion Linearizers”, IEEE Transactions on Microwave Theory and Techniques, vol. 37, No. 12, Dec. 1989, pp. 1885-1890.
U.S. Appl. No. 11/444,494, filed Jun. 1, 2006, Suzuki et al.
U.S. Appl. No. 11/446,381, filed Jun. 5, 2006, Suzuki et al.

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