Title:
APPARATUS AND METHOD OF COMPENSATING FOR I/Q IMBALANCE IN DIRECT UP-CONVERSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/077507
Kind Code:
A1
Abstract:
An apparatus and a method of compensating for an I/Q imbalance in a direct up-conversion system prevents the performance of the system from being deteriorated by efficiently compensating for an I/Q timing skew, an I/Q phase imbalance, and an I/Q gain imbalance by using a characteristic of an OFDM scheme in an Orthogonal Frequency Domain Multiple (Access) (OFDM(A)) system using a direct up-conversion scheme. According to the apparatus and the method of compensating for an I/Q imbalance in the direct up-conversion system of the present invention, an OFDM(A) system using a direct up-conversion scheme may efficiently compensate for I/Q timing skew, I/Q phase imbalance, and I/Q gain imbalance by using a characteristic of an OFDMA scheme, so that a performance of the system is prevented from being deteriorated.
Inventors:
JOUNG JINSOUP (KR)
JI SEUNGHWAN (KR)
LIM YONGHOON (KR)
JANG BYUNGKWAN (KR)
JI SEUNGHWAN (KR)
LIM YONGHOON (KR)
JANG BYUNGKWAN (KR)
Application Number:
PCT/KR2012/003330
Publication Date:
May 30, 2013
Filing Date:
April 30, 2012
Export Citation:
Assignee:
INNOWIRELESS CO LTD (KR)
JOUNG JINSOUP (KR)
JI SEUNGHWAN (KR)
LIM YONGHOON (KR)
JANG BYUNGKWAN (KR)
JOUNG JINSOUP (KR)
JI SEUNGHWAN (KR)
LIM YONGHOON (KR)
JANG BYUNGKWAN (KR)
International Classes:
H04L27/26; H03D7/00; H04B1/62; H04L25/17
Domestic Patent References:
| WO2003021826A1 | 2003-03-13 |
Foreign References:
| US20100289572A1 | 2010-11-18 | |||
| US20020050372A1 | 2002-05-02 |
Other References:
CAROLINA LUQUE A. ET AL.: "Improved dynamic range for multi-tone signal using model-based pre-distortion", METROLOGY AND MEASUREMENT SYSTEMS, vol. XVI, no. 1, 18 March 2009 (2009-03-18), pages 129 - 141
Attorney, Agent or Firm:
DARAE IP FIRM (131 Teheran-ro, Gangnam-gu, Seoul 135-080, KR)
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Claims: