Band-selective estimation for IQ-imbalance and carrier frequency offset in OFDM systems

Chih-Hung Kuo, Ping Ma, Chi Fang Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper, we propose a high-precision digital framework to compensate for non-ideal effects in the analog front-end circuits for wireless communication systems. The IQ imbalance and the carrier frequency offset (CFO) are jointly estimated with a band-selective mechanism of the orthogonal frequency division multiplexing (OFDM) system. The compensable CFO range is four times wider than prior schemes. The proposed mechanism divides the whole range of CFO bandwidth into three bands: the high-CFO band, the medium-CFO band, and the low-CFO band. The least-square (LS) based method is performed to simultaneously estimate the IQ imbalance and the CFO. Simulation results show that the proposed band-selective algorithm provides accurate estimation, with the average error less than 0.13%.

Original languageEnglish
Title of host publication2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1708-1711
Number of pages4
ISBN (Print)9781479934324
DOIs
Publication statusPublished - 2014 Jan 1
Event2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 - Melbourne, VIC, Australia
Duration: 2014 Jun 12014 Jun 5

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Other

Other2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
CountryAustralia
CityMelbourne, VIC
Period14-06-0114-06-05

Fingerprint

Orthogonal frequency division multiplexing
Communication systems
Bandwidth
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Kuo, C-H., Ma, P., & Chang, C. F. (2014). Band-selective estimation for IQ-imbalance and carrier frequency offset in OFDM systems. In 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 (pp. 1708-1711). [6865483] (Proceedings - IEEE International Symposium on Circuits and Systems). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2014.6865483
Kuo, Chih-Hung ; Ma, Ping ; Chang, Chi Fang. / Band-selective estimation for IQ-imbalance and carrier frequency offset in OFDM systems. 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 1708-1711 (Proceedings - IEEE International Symposium on Circuits and Systems).
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abstract = "In this paper, we propose a high-precision digital framework to compensate for non-ideal effects in the analog front-end circuits for wireless communication systems. The IQ imbalance and the carrier frequency offset (CFO) are jointly estimated with a band-selective mechanism of the orthogonal frequency division multiplexing (OFDM) system. The compensable CFO range is four times wider than prior schemes. The proposed mechanism divides the whole range of CFO bandwidth into three bands: the high-CFO band, the medium-CFO band, and the low-CFO band. The least-square (LS) based method is performed to simultaneously estimate the IQ imbalance and the CFO. Simulation results show that the proposed band-selective algorithm provides accurate estimation, with the average error less than 0.13{\%}.",
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Kuo, C-H, Ma, P & Chang, CF 2014, Band-selective estimation for IQ-imbalance and carrier frequency offset in OFDM systems. in 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014., 6865483, Proceedings - IEEE International Symposium on Circuits and Systems, Institute of Electrical and Electronics Engineers Inc., pp. 1708-1711, 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014, Melbourne, VIC, Australia, 14-06-01. https://doi.org/10.1109/ISCAS.2014.6865483

Band-selective estimation for IQ-imbalance and carrier frequency offset in OFDM systems. / Kuo, Chih-Hung; Ma, Ping; Chang, Chi Fang.

2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 1708-1711 6865483 (Proceedings - IEEE International Symposium on Circuits and Systems).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kuo C-H, Ma P, Chang CF. Band-selective estimation for IQ-imbalance and carrier frequency offset in OFDM systems. In 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 1708-1711. 6865483. (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2014.6865483