Blind Channel Estimation based on Second Order Statistics for IFDMA

被引：0

作者：

Sohl, Anja ^{[1
]}

Klein, Anja ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Commun Engn Lab, D-64283 Darmstadt, Germany

来源：

2008 IEEE 19TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS | 2008年

关键词：

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, the Interleaved Frequency Division Multiple Access (IFDMA) scheme is considered as a special case of Discrete Fourier Transform (DFT)-precoded Orthogonal Frequency Division Multiple Access (OFDMA) with interleaved subcarrier allocation. The redundancy that is characteristic for an IFDMA-signal is exploited in order to estimate the channel without pilot symbols and, thus, overcome the drawback of increased pilot symbol overhead that arises for IFDMA-systems. Two well-known blind channel estimation algorithms based on Second Order Statistics (SOS) are adapted to the application in an IFDMA-system and compared in terms of performance and convergence. Further on, the influence of multi-user transmission is illustrated for the two proposed blind channel estimation algorithms and the differences between multi-user uplink and downlink transmission in terms of channel estimation performance are investigated and emphasized by numerical results.

引用

页码：1640 / 1644

页数：5

共 14 条

[1]

[Anonymous], 2007, P 15 EUR SIGN PROC C

[2]

FILIPPI A, 2004, P IEEE VEH TECHN C L, P1890

[3]

FRANK T, 2006, P 15 MOB WIR COMM SU

[4]

FRANK T, 2005, P PIMRC 2005 BERL GE

[5]

FRANK T, 2008, P ICC 2008 BEIJ CHIN

[6]

Galda D, 2002, IEEE VTS VEH TECHNOL, P1737, DOI 10.1109/VTC.2002.1002918

[7] Blind channel estimation for OFDM systems via a generalized precoding [J].

Gao, Feifei ;

Nallanathan, Arumugam .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2007, 56 (03) :1155-1164

[8]

Maeda N, 2003, IEICE T COMMUN, VE86B, P300

[9] SUBSPACE METHODS FOR THE BLIND IDENTIFICATION OF MULTICHANNEL FIR FILTERS [J].

MOULINES, E ;

DUHAMEL, P ;

CARDOSO, JF ;

MAYRARGUE, S .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1995, 43 (02) :516-525

[10] Subspace-based blind and semi-blind channel estimation for OFDM systems [J].

Muquet, B ;

de Courville, M ;

Duhamel, P .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2002, 50 (07) :1699-1712

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