Estimation and Compensation of CFO and I/Q Imbalance in OFDM Systems Under Timing Ambiguity

被引：20
|
作者：
Cai, Xun [1 ]
Wu, Yik-Chung [1 ]
Lin, Hai [2 ]
Yamashita, Katsumi [2 ]
机构：
[1] Univ Hong Kong, Dept EEE, Hong Kong, Hong Kong, Peoples R China
[2] Osaka Prefecture Univ, Grad Sch Engn, Osaka 5998531, Japan
来源：
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2011年 / 60卷 / 03期
关键词：
Carrier frequency offset (CFO); channel estimation; I/Q imbalance; least-square estimation (LSE); orthogonal frequency-division multiplexing (OFDM); timing offset (TO); FREQUENCY OFFSET; CARRIER FREQUENCY; ML ESTIMATION; CHANNEL;
D O I：
10.1109/TVT.2011.2106525
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper proposes a joint carrier frequency offset (CFO) and In-phase/Quadrature-phase (I/Q) imbalance estimation and compensation method for orthogonal frequency-division-multiplexing (OFDM) systems under timing uncertainty. A matrix representation of the received signal with CFO, timing offset (TO), and I/Q imbalance is first derived. Then, a least-square CFO estimator robust against TO and I/Q imbalance is proposed. The Cramer-Rao bound (CRB) for CFO is also derived. With the estimated CFO and equivalent channel, a compensation method for both frequency-dependent and frequency-independent I/Q imbalances is presented. Simulation results are provided to verify the performances of the proposed methods.
引用
收藏
页码：1200 / 1205
页数：7
相关论文
共 50 条
  • [31] A Method of I/Q Imbalance Estimation and Compensation
    Meng J.
    Wang H.
    Ye P.
    Yang K.
    Zhao Y.
    Guo L.
    Jiang J.
    Dianzi Keji Daxue Xuebao/Journal of the University of Electronic Science and Technology of China, 2022, 51 (02): : 227 - 233
  • [32] Time-Frequency Multiplex Estimator Design of Joint Tx IQ Imbalance, CFO, Channel Estimation, and Compensation for OFDM Systems
    Deng, Juinn-Horng
    Feng, Kuo-Tai
    2015 38TH INTERNATIONAL CONFERENCE ON TELECOMMUNICATIONS AND SIGNAL PROCESSING (TSP), 2015,
  • [33] OFDM AF Relaying Under I/Q Imbalance: Performance Analysis and Baseband Compensation
    Mokhtar, Mohamed
    Gomaa, Ahmad
    Al-Dhahir, Naofal
    IEEE TRANSACTIONS ON COMMUNICATIONS, 2013, 61 (04) : 1304 - 1313
  • [34] Novel IQ imbalance estimation for wideband MIMO OFDM systems with CFO
    Sandell, Magnus
    Tsimbalo, Evgeny
    Jardak, Seifallah
    Uchida, Daisuke
    Akita, Koji
    Yoda, Daiki
    Kawaguchi, Tamio
    Sano, Makoto
    2019 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM), 2019,
  • [35] GLCP OFDM Systems with I/Q Imbalance
    Cao, Mingzheng
    Ge, Hongya
    IEEE COMMUNICATIONS LETTERS, 2009, 13 (04) : 230 - 232
  • [36] I/Q Imbalance Compensation and Channel Equalization in OFDM Receivers
    Ravi, S.
    Kamath, Rishikesh B.
    Bhargava, Suhaas A.
    Aishwarya, S.
    Manohj, S. V.
    Sudheesh, P.
    RECENT ADVANCES IN NETWORKING, VLSI AND SIGNAL PROCESSING, 2010, : 258 - +
  • [37] Standard-independent I/Q imbalance estimation and compensation scheme in OFDM direct-conversion transceivers
    Gu, Fang-lin
    Wang, Shan
    Wang, Wen-wu
    FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING, 2018, 19 (03) : 388 - 397
  • [38] Blind estimation and compensation of I/Q imbalance in OFDM receivers with enhancements through Kalman filtering
    Windisch, Marcus
    Fettweis, Gerhard
    2007 IEEE/SP 14TH WORKSHOP ON STATISTICAL SIGNAL PROCESSING, VOLS 1 AND 2, 2007, : 754 - 758
  • [39] Blind Frequency Synchronization for OFDM Systems With I/Q Imbalance
    Meng, Yue
    Zhang, Weile
    Wang, Wenjie
    IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2017, 66 (09) : 7862 - 7876
  • [40] Linear Least Squares CFO Estimation and Kalman Filtering based I/Q Imbalance Compensation in MIMO SC-FDE Systems
    Gao, Jingbo
    Zhu, Xu
    Lin, Hai
    Nandi, Asoke K.
    2010 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, 2010,
12345