OFDM直接变频接收机中通用的I/Q不平衡估计与补偿方法

辜方林; 王杉; Wenwu Wang

doi:10.1631/FITEE.1700003

Your Location：

Home >

Browse articles >

OFDM直接变频接收机中通用的I/Q不平衡估计与补偿方法

5G无线通信系统与技术专题 | Updated：2022-05-19

- OFDM直接变频接收机中通用的I/Q不平衡估计与补偿方法
- Standard-independent I/Q imbalance estimation and compensation scheme in OFDM direct-conversion transceivers
- 信息与电子工程前沿（英文） 2018年19卷第3期页码：388-397
- Affiliations：
  
  College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
  Department of Electronic Engineering, University of Surrey, Guildford GU2 7XH, UK
- Author bio：
  
  Fang-lin GU, E-mail: gu.fanglin@nudt.edu.cn
  [ "Shan WANG, E-mail: chinafir@nudt.edu.cn" ]
  [ "Wen-wu WANG, E-mail: w.wang@surrey.ac.uk" ]
- Funds：
  
  Project supported by the National Natural Science Foundation of China (No. 61601477)
- DOI：10.1631/FITEE.1700003
  中图分类号： TN92
- 收稿：2017-01-03，
  
  修回：2018-;3-;5，
  
  纸质出版：2018-03
- Accepted：
Scan QR Code
辜方林, 王杉, Wenwu Wang. OFDM直接变频接收机中通用的I/Q不平衡估计与补偿方法[J]. 信息与电子工程前沿（英文）, 2018,19(3):388-397.

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.
辜方林, 王杉, Wenwu Wang. OFDM直接变频接收机中通用的I/Q不平衡估计与补偿方法[J]. 信息与电子工程前沿（英文）, 2018,19(3):388-397. DOI： 10.1631/FITEE.1700003.

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. DOI： 10.1631/FITEE.1700003.

摘要

直接变频接收机由于具有低功耗的特点，受到广泛关注，但是它存在较严重的同相/正交（I/Q）分量不平衡问题：I/Q不平衡会恶化接收信号的信噪比，进而影响系统的传输容量和能够支持的调制方式。本文首先分析了I/Q不平衡对OFDM接收机接收信号的影响，在此基础上，定义了一个统计量用于刻画OFDM系统的I/Q不平衡特性，并提出一种实现I/Q不平衡参数估计与补偿的方法。特别地，进一步证明该统计量不受传输信道影响，因而该方法适用于高斯白噪声和多径衰落信道等不同场景。仿真结果表明，该方法可以实现对OFDM系统I/Q不平衡的准确估计与补偿，使补偿后系统的误比特率性能接近于不存在I/Q不平衡的情形。更重要的是，由于该方法不依赖于导频信号，因而可以应用于采用不同标准的OFDM系统。

Abstract

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.

关键词

Keywords

references

AA Abidi . . Direct-conversion radio transceivers for digital communications . . IEEE J Sol-State Circ , , 1995 . . 30 ( ( 12 ): ): 1399 - - 1410 . . DOI: 10.1109/4.482187 http://doi.org/10.1109/4.482187 . .

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

L Anttila , , , M Valkama . . Blind signal estimation in widely-linear signal models with fourth-order circularity: algorithms and application to receiver I/Q calibration . . IEEE Signal Process Lett , , 2013 . . 20 ( ( 3 ): ): 221 - - 224 . . DOI: 10.1109/LSP.2012.2230625 http://doi.org/10.1109/LSP.2012.2230625 . .

S Chen , , , J Zhao . . The requirements, challenges, and technologies for 5G of terrestrial mobile telecommunication . . IEEE Commun Mag , , 2014 . . 52 ( ( 5 ): ): 36 - - 43 . . DOI: 10.1109/MCOM.2014.6815891 http://doi.org/10.1109/MCOM.2014.6815891 . .

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

F Gu , , , S Wang , , , J Wei , , , 等 . . Higher-order circularity based I/Q imbalance compensation in direct-conversion receivers . . IEEE Int Conf on Vehicular Technology , , 2016 . . p.1 - - 6 . . DOI: 10.1109/VTCFall.2016.7881033 http://doi.org/10.1109/VTCFall.2016.7881033 . .

L He , , , S Ma , , , Y Wu , , , 等 . . Pilot-aided IQ imbalance compensation for OFDM systems operating over doubly selective channels . . IEEE Trans Signal Process , , 2011 . . 59 ( ( 5 ): ): 2223 - - 2233 . . DOI: 10.1109/TSP.2011.2112649 http://doi.org/10.1109/TSP.2011.2112649 . .

NT Hieu , , , HG Ryu , , , CX Wang , , , 等 . . The impact of the I/Q mismatching errors on the BER performance of OFDM communication systems . . IEEE Int Conf on Communications , , 2007 . . p.5423 - - 5427 . . DOI: 10.1109/ICC.2007.898 http://doi.org/10.1109/ICC.2007.898 . .

EE IE . . 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 , , 1999 . . .

M Inamori , , , AM Bostamam , , , Y Sanada , , , 等 . . IQ imbalance compensation scheme in the presence of frequency offset and dynamic DC offset for a direct conversion receiver . . IEEE Trans Wirel Commun , , 2009 . . 8 ( ( 5 ): ): 2214 - - 2220 . . DOI: 10.1109/TWC.2009.080139 http://doi.org/10.1109/TWC.2009.080139 . .

S Kim , , , D Yoon , , , H Park , , , 等 . . A fast and precise blind I/Q mismatch compensation for image rejection in direct-conversion receiver . . ETRI J , , 2014 . . 36 ( ( 1 ): ): 12 - - 21 . . DOI: 10.4218/etrij.14.0113/0223 http://doi.org/10.4218/etrij.14.0113/0223 . .

I Koffman , , , V Roman . . Broadband wireless access solutions based on OFDM access in IEEE 802 . . 16. IEEE Commun Mag , , 2002 . . 40 ( ( 4 ): ): 96 - - 103 . . DOI: 10.1109/35.995857 http://doi.org/10.1109/35.995857 . .

FJ Lopez-Martinez , , , E Martos-Naya , , , JF Paris , , , 等 . . Exact closed-form BER analysis of OFDM systems in the presence of IQ imbalances and ICSA . . IEEE Trans Wirel Commun , , 2011 . . 10 ( ( 6 ): ): 1914 - - 1922 . . DOI: 10.1109/TWC.2011.032411.101356 http://doi.org/10.1109/TWC.2011.032411.101356 . .

U Reimers . . DVB-T: the COFDM-based system for terrestrial television . . Electron Commun Eng J , , 1997 . . 9 ( ( 1 ): ): 28 - - 32 . . DOI: 10.1049/ecej:19950309 http://doi.org/10.1049/ecej:19950309 . .

P Shelswell . . The COFDM modulation system: the heart of digital audio broadcasting . . Electron Commun Eng J , , 1995 . . 7 ( ( 3 ): ): 127 - - 136 . . DOI: 10.1049/ecej:19950309 http://doi.org/10.1049/ecej:19950309 . .

K Sung , , , C Chao . . Estimation and compensation of I/Q imbalance in OFDM direct-conversion receivers . . IEEE J Sel Top Signal Process , , 2009 . . 3 ( ( 3 ): ): 438 - - 453 . . DOI: 10.1109/JSTSP.2009.2020241 http://doi.org/10.1109/JSTSP.2009.2020241 . .

D Tandur , , , M Moonen . . Joint adaptive compensation of transmitter and receiver IQ imbalance under carrier frequency offset in OFDM-based systems . . IEEE Trans Signal Process , , 2007 . . 55 ( ( 11 ): ): 5246 - - 5252 . . DOI: 10.1109/TSP.2007.898788 http://doi.org/10.1109/TSP.2007.898788 . .

A Tarighat , , , R Bagheri , , , AH Sayed . . Compensation schemes and performance analysis of IQ imbalances in OFDM receivers . . IEEE Trans Signal Process , , 2005 . . 53 ( ( 8 ): ): 3257 - - 3268 . . DOI: 10.1109/TSP.2005.851156 http://doi.org/10.1109/TSP.2005.851156 . .

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

F Wu , , , Y Li , , , M Zhao . . 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 , , 2014 . . p.960 - - 965 . . DOI: 10.1109/GLOCOMW.2014.7063557 http://doi.org/10.1109/GLOCOMW.2014.7063557 . .

L Yang , , , K Panta , , , J Armstrong . . Impact of timing jitter and I/Q imbalance in OFDM systems . . IEEE Commun Lett , , 2013 . . 17 ( ( 2 ): ): 253 - - 256 . . DOI: 10.1109/LCOMM.2012.121912.122280 http://doi.org/10.1109/LCOMM.2012.121912.122280 . .

TM Ylamurto . . Frequency domain IQ imbalance correction scheme for orthogonal frequency division multiplexing (OFDM) systems . . IEEE Wireless Communications Networking Conf , , 2003 . . p.20 - - 25 . . DOI: 10.1109/WCNC.2003.1200313 http://doi.org/10.1109/WCNC.2003.1200313 . .

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

暂无数据