A novel frequency offset tracking algorithm for space-time block coded OFDM systems

被引：0

作者：

Lei, Ming ^{[1
]}

Zhao, Minjian ^{[1
]}

Zhong, Jie ^{[1
]}

Cai, Yunlong ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Informat Sci & Elect Engn, Hangzhou 310003, Zhejiang, Peoples R China

来源：

2011 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL) | 2011年

关键词：

MIMO-OFDM; frequency offset; STBC; ML estimation;

D O I：

暂无

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：

A novel frequency offset tracking algorithm for Space-Time Block Coded (STBC) Orthogonal Frequency Division Multiplexing (OFDM) systems is proposed in this work. Tracking of a frequency offset between the transmitter and the receiver is often aided by transmitting pilots embedded in the data payload. The proposed algorithm mainly exploits the specific construction of the OFDM symbol in STBC-OFDM systems, which does not need any additional pilots or sequences in the data field, providing high efficiency in spectrum. The estimator is derived on the basis of the maximum likelihood (ML) theory. Simulation results show that in a 2 x 2 multiple input multiple output (MIMO) system, under the assumption that the antennas are uncorrelated to each other, this method can provide a significant performance improvement in terms of the estimation accuracy of the frequency offset.

引用

页数：5

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