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Patent Searching and Data


Title:
SIGNAL PROCESSOR, SIGNAL PROCESSING METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP2015186236
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To easily correct a phase error.SOLUTION: An acquisition unit acquires: a demodulation signal obtained by performing orthogonal demodulation to a modulation signal obtained by orthogonal modulation; a transmission side carrier to be used in orthogonal modulation; a modulation/demodulation phase difference to be a phase difference from a reception side carrier to be used in the orthogonal demodulation; and a carrier recovery signal that corrects a demodulation signal by a modulation/demodulation phase difference. An error detection part uses the demodulation signal, the modulation/demodulation phase difference, and the carrier recovery signal to obtain a phase error of the transmission side carrier and a phase error of the reception side carrier. The current technology is, for example, applicable to a case such as one that a phase error to be 90 degree's displacement from a phase difference between an I component and a Q component is detected in communication performing the orthogonal modulation and the orthogonal demodulation.

Inventors:
TAMENGI MASAYA
NODA MAKOTO
KONDO KEITARO
Application Number:
JP2014064010A
Publication Date:
October 22, 2015
Filing Date:
March 26, 2014
Export Citation:
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Assignee:
SONY CORP
International Classes:
H04L27/38; H04B1/04; H04B1/26; H04B1/30; H04L27/36
Domestic Patent References:
JP2009540672A2009-11-19
JP2008022243A2008-01-31
JP2005252631A2005-09-15
JP2002077284A2002-03-15
JP2003209589A2003-07-25
JP2009540672A2009-11-19
Foreign References:
WO2012035733A12012-03-22
WO2012035733A12012-03-22
Attorney, Agent or Firm:
稲本 義雄
西川 孝