Full Text:   <2651>

Summary:  <1430>

CLC number: TN92

On-line Access: 2018-05-07

Received: 2017-01-03

Revision Accepted: 2017-03-06

Crosschecked: 2018-03-05

Cited: 0

Clicked: 5779

Citations:  Bibtex RefMan EndNote GB/T7714


Fang-lin Gu


-   Go to

Article info.
Open peer comments

Frontiers of Information Technology & Electronic Engineering  2018 Vol.19 No.3 P.388-397


Standard-independent I/Q imbalance estimation and compensation scheme in OFDM direct-conversion transceivers

Author(s):  Fang-lin Gu, Shan Wang, Wen-wu Wang

Affiliation(s):  College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China; more

Corresponding email(s):   gu.fanglin@nudt.edu.cn, chinafir@nudt.edu.cn, w.wang@surrey.ac.uk

Key Words:  In- and quadrature-phase (I/Q) imbalance, Orthogonal frequency division multiplexing (OFDM), Standard-independent

Fang-lin Gu, Shan Wang, Wen-wu Wang. Standard-independent I/Q imbalance estimation and compensation scheme in OFDM direct-conversion transceivers[J]. Frontiers of Information Technology & Electronic Engineering, 2018, 19(3): 388-397.

@article{title="Standard-independent I/Q imbalance estimation and compensation scheme in OFDM direct-conversion transceivers",
author="Fang-lin Gu, Shan Wang, Wen-wu Wang",
journal="Frontiers of Information Technology & Electronic Engineering",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Standard-independent I/Q imbalance estimation and compensation scheme in OFDM direct-conversion transceivers
%A Fang-lin Gu
%A Shan Wang
%A Wen-wu Wang
%J Frontiers of Information Technology & Electronic Engineering
%V 19
%N 3
%P 388-397
%@ 2095-9184
%D 2018
%I Zhejiang University Press & Springer
%DOI 10.1631/FITEE.1700003

T1 - Standard-independent I/Q imbalance estimation and compensation scheme in OFDM direct-conversion transceivers
A1 - Fang-lin Gu
A1 - Shan Wang
A1 - Wen-wu Wang
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 19
IS - 3
SP - 388
EP - 397
%@ 2095-9184
Y1 - 2018
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/FITEE.1700003

Direct-conversion transceivers are gaining increasing attention due to their low power consumption. However, they suffer from a serious in- and quadrature-phase (I/Q) imbalance problem. The I/Q imbalance can severely limit the achievable operating signal-to-noise ratio (SNR) at the receiver and, consequently, the supported constellation sizes and data rates. In this paper, we first investigate the effects of I/Q imbalance on orthogonal frequency division multiplexing (OFDM) receivers, and then propose a new I/Q imbalance compensation scheme. In the proposed method, a new statistic, which is robust against channel distortion, is used to estimate the I/Q imbalance parameters, and then the I/Q imbalance is corrected in the frequency domain. Simulations are performed to verify the effectiveness of the proposed method for I/Q imbalance compensation. The results show that the proposed I/Q imbalance compensation method can achieve bit error rate (BER) performance close to that in the ideal case without I/Q imbalance in additive white Gaussian noise (AWGN) or multipath environments. Furthermore, because no pilot information is required, this method can be applied in various standard communication systems.




Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


[1]Abidi AA, 1995. Direct-conversion radio transceivers for digital communications. IEEE J Sol-State Circ, 30(12):1399-1410.

[2]Anttila L, 2011. Digital Front-End Signal Processing with Widely-Linear Signal Models in Radio Devices. PhD Thesis, Tampere University of Technology, Tempere, Finland.

[3]Anttila L, Valkama M, 2013. Blind signal estimation in widely-linear signal models with fourth-order circularity:algorithms and application to receiver I/Q calibration. IEEE Signal Process Lett, 20(3):221-224.

[4]Chen S, Zhao J, 2014. The requirements, challenges, and technologies for 5G of terrestrial mobile telecommunication. IEEE Commun Mag, 52(5):36-43.

[5]Dawkins MT, 2002. Up-Integration in Radio-Frequency Tuners for Digital Terrestrial Television. PhD Thesis, University of London, UK.

[6]Gu F, Wang S, Wei J, et al., 2016. Higher-order circularity based I/Q imbalance compensation in direct-conversion receivers. IEEE Int Conf on Vehicular Technology, p.1-6.

[7]He L, Ma S, Wu Y, et al., 2011. Pilot-aided IQ imbalance compensation for OFDM systems operating over doubly selective channels. IEEE Trans Signal Process, 59(5):2223-2233.

[8]Hieu NT, Ryu HG, Wang CX, et al., 2007. The impact of the I/Q mismatching errors on the BER performance of OFDM communication systems. IEEE Int Conf on Communications, p.5423-5427.

[9]IEEE, 1999. Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications:high-speed physical layer in the 5 GHz band. IEEE Std 802.11a-1999.

[10]Inamori M, Bostamam AM, Sanada Y, et al., 2009. IQ imbalance compensation scheme in the presence of frequency offset and dynamic DC offset for a direct conversion receiver. IEEE Trans Wirel Commun, 8(5):2214-2220.

[11]Kim S, Yoon D, Park H, et al., 2014. A fast and precise blind I/Q mismatch compensation for image rejection in direct-conversion receiver. ETRI J, 36(1):12-21.

[12]Koffman I, Roman V, 2002. Broadband wireless access solutions based on OFDM access in IEEE 802.16. IEEE Commun Mag, 40(4):96-103.

[13]Lopez-Martinez FJ, Martos-Naya E, Paris JF, et al., 2011. Exact closed-form BER analysis of OFDM systems in the presence of IQ imbalances and ICSA. IEEE Trans Wirel Commun, 10(6):1914-1922.

[14]Reimers U, 1997. DVB-T:the COFDM-based system for terrestrial television. Electron Commun Eng J, 9(1):28-32.

[15]Shelswell P, 1995. The COFDM modulation system:the heart of digital audio broadcasting. Electron Commun Eng J, 7(3):127-136.

[16]Sung K, Chao C, 2009. Estimation and compensation of I/Q imbalance in OFDM direct-conversion receivers. IEEE J Sel Top Signal Process, 3(3):438-453.

[17]Tandur D, Moonen M, 2007. Joint adaptive compensation of transmitter and receiver IQ imbalance under carrier frequency offset in OFDM-based systems. IEEE Trans Signal Process, 55(11):5246-5252.

[18]Tarighat A, Bagheri R, Sayed AH, 2005. Compensation schemes and performance analysis of IQ imbalances in OFDM receivers. IEEE Trans Signal Process, 53(8):3257-3268.

[19]Windisch M, Fettweis G, 2004. Standard-independent I/Q imbalance compensation in OFDM direct-conversion receivers. Int OFDM Workshop, p.57-61.

[20]Wu F, Li Y, Zhao M, 2014. Estimation of TX I/Q imbalance at the RX side with RX I/Q imbalance and carrier frequency offset for OFDM systems. IEEE Int Conf on Globecom, p.960-965.

[21]Yang L, Panta K, Armstrong J, 2013. Impact of timing jitter and I/Q imbalance in OFDM systems. IEEE Commun Lett, 17(2):253-256.

[22]Ylamurto TM, 2003. Frequency domain IQ imbalance correction scheme for orthogonal frequency division multiplexing (OFDM) systems. IEEE Wireless Communications Networking Conf, p.20-25.

Open peer comments: Debate/Discuss/Question/Opinion


Please provide your name, email address and a comment

Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - 2024 Journal of Zhejiang University-SCIENCE