Reduced-Complexity Baseband Compensation of Joint Tx/Rx I/Q Imbalance in Mobile MIMO-OFDM

被引：28

作者：

Narasimhan, Balachander ^{[1
]}

Narayanan, Sudharsan

Minn, Hlaing ^{[1
]}

Al-Dhahir, Naofal ^{[1
]}

机构：

[1] Univ Texas Dallas, Dept Elect Engn, Richardson, TX 75080 USA

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2010年 / 9卷 / 05期

关键词：

OFDM; MIMO; I/Q imbalance; MMSE; equalization; mobility; ICI;

D O I：

10.1109/TWC.2010.05.090847

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：

Direct-conversion multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) transceivers enjoy high data rates and reliability at practical implementation complexity. However, analog front-end impairments such as I/Q imbalance and high mobility requirements of next-generation broadband wireless standards result in performance-limiting inter-carrier interference (ICI). In this paper, we study the effects of ICI due to these impairments for OFDM with space frequency block codes and spatial multiplexing, derive a generalized linear model and propose a non-iterative reduced-complexity digital baseband joint compensation scheme. Furthermore, we present a pilot scheme for joint estimation of the channel and the I/Q imbalance parameters and evaluate its performance through simulations. Our proposed scheme is effective in estimating and compensating for frequency-independent and frequency-dependent transmit and receive I/Q imbalances even in the presence of a residual frequency offset.

引用

页码：1720 / 1728

页数：9

共 18 条

[1]

[Anonymous], 2006, IEEE Standard 802.16--2005

[2]

Barhumi I., 2006, P EUR SIGN PROC C SE, P3097

[3]

CHUNG YH, 2007, P EUSIPCO, P906

[4]

Kailath T, 2000, PR H INF SY, pXIX

[5]

KAMATA H, 2006, P IEEE ICC JUN, P251

[6]

Kay S., 1993, Fundamentals of statistical processing, volume I: estimation theory, VI

[7]

LU S, 2008, P IEEE WCNC MAR, P1183

[8] Optimal training signals for MIMO OFDM channel estimation [J].

Minn, Hlaing ;

Al-Dhahir, Naofal .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2006, 5 (05) :1158-1168

[9] A TECHNIQUE FOR ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING FREQUENCY OFFSET CORRECTION [J].

MOOSE, PH .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1994, 42 (10) :2908-2914

[10] ICI mitigation for pilot-aided OFDM mobile systems [J].

Mostofi, Y ;

Cox, DC .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2005, 4 (02) :765-774

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