Joint carrier-frequency offset and channel estimation for MIMO-OFDM transmission

被引：5

作者：

Salari, S. ^{[1
]}

Ardebilipour, M. ^{[1
]}

Ahmadian, M. ^{[1
]}

机构：

[1] KN Toosi Univ Technol, Fac Elect Engn, Tehran, Iran

来源：

WIRELESS PERSONAL COMMUNICATIONS | 2008年 / 47卷 / 02期

关键词：

carrier-frequency offset (CFO); channel estimation; Cramer-Rao bound (CRB); expectation-maximization (EM); multiple-input multiple-output (MIMO); orthogonal frequency-division multiplexing (OFDM);

D O I：

10.1007/s11277-008-9466-5

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this paper, we consider a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system operating over frequency-selective fading channels. We propose a novel scheme for joint carrier-frequency offset (CFO) and channel estimation based on the expectation-maximization (EM) algorithm. Furthermore, the Cramer-Rao bounds (CRBs) for both CFO and channel estimators are exploited to evaluate the performance of the proposed scheme. Computer simulations show that the proposed algorithm achieves almost ideal performance compared with the CRBs for both channel and frequency offset estimations.

引用

页码：303 / 314

页数：12

共 24 条

[1] Blind estimation of residual carrier offset in OFDM systems [J].

Attallah, S .

IEEE SIGNAL PROCESSING LETTERS, 2004, 11 (02) :216-219

[2]

Bölcskei H, 2002, IEEE T COMMUN, V50, P225, DOI 10.1109/26.983319

[3]

CUI T, 2004, IEEE VTC LOS ANG

[4] OFDM carrier and sampling frequency synchronization and its performance on stationary and mobile channels [J].

Fechtel, SA .

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, 2000, 46 (03) :438-441

[5] PARAMETER-ESTIMATION OF SUPERIMPOSED SIGNALS USING THE EM ALGORITHM [J].

FEDER, M ;

WEINSTEIN, E .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1988, 36 (04) :477-489

[6] Sequence estimation in the presence of random parameters via the EM algorithm [J].

Georghiades, CN ;

Han, JC .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1997, 45 (03) :300-308

[7] Joint carrier frequency synchronization and channel estimation for OFDM systems via the EM algorithm [J].

Lee, JH ;

Han, JC ;

Kim, SC .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2006, 55 (01) :167-172

[8] MIMO-OFDM for wireless communications: Signal detection with enhanced channel estimation [J].

Li, Y ;

Winters, JH ;

Sollenberger, NR .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2002, 50 (09) :1471-1477

[9]

MA X, 2003, IEEE GLOB TEL ORL

[10] Hopping pilots for estimation of frequency-offset and multiantenna channels in MIMO-OFDM [J].

Ma, XL ;

Oh, MK ;

Giannakis, GB ;

Park, DJ .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2005, 53 (01) :162-172

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