Title:
TRANSMITTER, SIGNAL GENERATION DEVICE, CALIBRATION METHOD, AND SIGNAL GENERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2013/145762
Kind Code:
A1
Abstract:
Provided is a transmitter capable of correcting distortion of a signal with high accuracy. The transmitter is provided with a test signal generation unit, a frequency characteristics correction unit which corrects amplitude characteristics and phase characteristics of a test signal, a modulation unit, an envelope detection unit, a frequency characteristics computation unit which computes frequency characteristics of an envelope signal, and a coefficient computation unit which computes a correction coefficient for correcting amplitude characteristics and phase characteristics of a test signal on the basis of the frequency characteristics. The test signal generation unit, when comparing signal traces in at least two quadrants among first to fourth quadrants upon the I-Q plane, generates a test signal that is asymmetric.
Inventors:
MATSUURA TORU
Application Number:
PCT/JP2013/002145
Publication Date:
October 03, 2013
Filing Date:
March 28, 2013
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
H04L27/36; H04B7/005; H04L27/00; H04L27/18
Domestic Patent References:
| WO2009008445A1 | 2009-01-15 | |||
| WO2007122880A1 | 2007-11-01 | |||
| WO2008018263A1 | 2008-02-14 |
Foreign References:
| JP2001016145A | 2001-01-19 | |||
| JPH08213846A | 1996-08-20 | |||
| JP2006115463A | 2006-04-27 | |||
| JP2002252663A | 2002-09-06 | |||
| JP2009540672A | 2009-11-19 |
Attorney, Agent or Firm:
HASHIMOTO, Kimihide et al. (JP)
Kimihide Hashimoto (JP)
Kimihide Hashimoto (JP)
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