Automatic IQ Imbalance Compensation Technique for Quadrature Modulator by Single-Tone Testing

Minseok KIM; Yohei KONISHI; Jun-ichi TAKADA; Boxin GAO

doi:10.1587/transcom.E95.B.1864

Automatic IQ Imbalance Compensation Technique for Quadrature Modulator by Single-Tone Testing

Minseok KIM, Yohei KONISHI, Jun-ichi TAKADA, Boxin GAO

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This letter proposes an automatic IQ imbalance compensation technique for quadrature modulators by means of spectrum measurement of RF signal using a spectrum analyzer. The analyzer feeds back only magnitude information of the frequency spectrum of the signal. To realize IQ imbalance compensation, the conventional method of steepest descent is modified; the descent direction is empirically determined and a variable step-size is introduced for accelerating convergence. The experimental results for a four-channel transmitter operating at 11 GHz are presented for verification.

Publication: IEICE TRANSACTIONS on Communications Vol.E95-B No.5 pp.1864-1868

Publication Date: 2012/05/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E95.B.1864

Type of Manuscript: LETTER

Category: Wireless Communication Technologies

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Minseok KIM, Yohei KONISHI, Jun-ichi TAKADA, Boxin GAO, "Automatic IQ Imbalance Compensation Technique for Quadrature Modulator by Single-Tone Testing" in IEICE TRANSACTIONS on Communications, vol. E95-B, no. 5, pp. 1864-1868, May 2012, doi: 10.1587/transcom.E95.B.1864.
Abstract: This letter proposes an automatic IQ imbalance compensation technique for quadrature modulators by means of spectrum measurement of RF signal using a spectrum analyzer. The analyzer feeds back only magnitude information of the frequency spectrum of the signal. To realize IQ imbalance compensation, the conventional method of steepest descent is modified; the descent direction is empirically determined and a variable step-size is introduced for accelerating convergence. The experimental results for a four-channel transmitter operating at 11 GHz are presented for verification.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E95.B.1864/_p

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@ARTICLE{e95-b_5_1864,
author={Minseok KIM, Yohei KONISHI, Jun-ichi TAKADA, Boxin GAO, },
journal={IEICE TRANSACTIONS on Communications},
title={Automatic IQ Imbalance Compensation Technique for Quadrature Modulator by Single-Tone Testing},
year={2012},
volume={E95-B},
number={5},
pages={1864-1868},
abstract={This letter proposes an automatic IQ imbalance compensation technique for quadrature modulators by means of spectrum measurement of RF signal using a spectrum analyzer. The analyzer feeds back only magnitude information of the frequency spectrum of the signal. To realize IQ imbalance compensation, the conventional method of steepest descent is modified; the descent direction is empirically determined and a variable step-size is introduced for accelerating convergence. The experimental results for a four-channel transmitter operating at 11 GHz are presented for verification.},
keywords={},
doi={10.1587/transcom.E95.B.1864},
ISSN={1745-1345},
month={May},}

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TY - JOUR
TI - Automatic IQ Imbalance Compensation Technique for Quadrature Modulator by Single-Tone Testing
T2 - IEICE TRANSACTIONS on Communications
SP - 1864
EP - 1868
AU - Minseok KIM
AU - Yohei KONISHI
AU - Jun-ichi TAKADA
AU - Boxin GAO
PY - 2012
DO - 10.1587/transcom.E95.B.1864
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E95-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2012
AB - This letter proposes an automatic IQ imbalance compensation technique for quadrature modulators by means of spectrum measurement of RF signal using a spectrum analyzer. The analyzer feeds back only magnitude information of the frequency spectrum of the signal. To realize IQ imbalance compensation, the conventional method of steepest descent is modified; the descent direction is empirically determined and a variable step-size is introduced for accelerating convergence. The experimental results for a four-channel transmitter operating at 11 GHz are presented for verification.
ER -