Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering

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Timing and Frequency Synchronization Algorithm for Distributed MIMO-OFDM Systems

Authors
Jing Liu, Jian Wang, KangLi Zhang, Jibo Wei, Kui Liao
Corresponding Author
Jing Liu
Available Online November 2015.
DOI
10.2991/iccmcee-15.2015.235How to use a DOI?
Keywords
OFDM; Distributed MIMO; Preamble; Time synchronization; Frequency synchronization
Abstract

In this paper, we investigate symbol timing offset and carrier frequency offset estimation problem in distributed MIMO-OFDM systems. In distributed MIMO-OFDM systems, signals arrive at the receiving antennas on different timings and are characterized by distinct CFOs. This property makes synchronization an extremely challenging task as compared with the centralized ones. A training sequence which consists of two OFDM symbols having a reduplicate and conjugate structure is proposed to perform synchronization. Timing offsets are estimated using cross-correlation type algorithm. The fractional frequency offset is estimated using the phase difference of the two duplicated training symbols, and the integral frequency offset is estimated by utilizing the opposite shifts feature of cross correlation. The analysis and simulation results show that adopting the proposed preamble structure and synchronization algorithm, the receiver can estimate not only the STOs but also the CFOs from all transmitters. And the proposed algorithm is shown to have better performance, in terms of synchronization errors, than the UPSP method.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering
Series
Advances in Engineering Research
Publication Date
November 2015
ISBN
10.2991/iccmcee-15.2015.235
ISSN
2352-5401
DOI
10.2991/iccmcee-15.2015.235How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

risenwbib
TY  - CONF
AU  - Jing Liu
AU  - Jian Wang
AU  - KangLi Zhang
AU  - Jibo Wei
AU  - Kui Liao
PY  - 2015/11
DA  - 2015/11
TI  - Timing and Frequency Synchronization Algorithm for Distributed MIMO-OFDM Systems
BT  - Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering
PB  - Atlantis Press
SP  - 1242
EP  - 1248
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccmcee-15.2015.235
DO  - 10.2991/iccmcee-15.2015.235
ID  - Liu2015/11
ER  -