An Efficient OFDM Timing Synchronization for CMMB System

Yong WANG; Jian-hua GE; Jun HU; Bo AI

doi:10.1587/transcom.E95.B.3786

An Efficient OFDM Timing Synchronization for CMMB System

Yong WANG, Jian-hua GE, Jun HU, Bo AI

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An accurate and rapid synchronization scheme is a prerequisite for achieving high-quality multimedia transmission for wireless handheld terminals, e.g. China multimedia mobile broadcasting (CMMB) system. In this paper, an efficient orthogonal frequency division multiplexing (OFDM) timing synchronization scheme, which is robust to the doubly selective fading channel, is proposed for CMMB system. TS timing is derived by performing an inverse sliding correlation (ISC) between the segmented Sync sequences in the Beacon, which possesses the inverse conjugate symmetry (ICS) characteristic. The ISC can provide sufficient correlative gain even in the ultra low signal noise ratio (SNR) scenarios. Moreover, a fast fine symbol timing method based on the auto-correlation property of Sync sequence is also presented. According to the detection strategy for the significant channel taps, the specific information about channel profile can be obtained. The advantages of the proposed timing scheme over the traditional ones have been demonstrated through both theoretical analysis and numerical simulations.

Publication: IEICE TRANSACTIONS on Communications Vol.E95-B No.12 pp.3786-3792

Publication Date: 2012/12/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E95.B.3786

Type of Manuscript: PAPER

Category: Transmission Systems and Transmission Equipment for Communications

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Yong WANG, Jian-hua GE, Jun HU, Bo AI, "An Efficient OFDM Timing Synchronization for CMMB System" in IEICE TRANSACTIONS on Communications, vol. E95-B, no. 12, pp. 3786-3792, December 2012, doi: 10.1587/transcom.E95.B.3786.
Abstract: An accurate and rapid synchronization scheme is a prerequisite for achieving high-quality multimedia transmission for wireless handheld terminals, e.g. China multimedia mobile broadcasting (CMMB) system. In this paper, an efficient orthogonal frequency division multiplexing (OFDM) timing synchronization scheme, which is robust to the doubly selective fading channel, is proposed for CMMB system. TS timing is derived by performing an inverse sliding correlation (ISC) between the segmented Sync sequences in the Beacon, which possesses the inverse conjugate symmetry (ICS) characteristic. The ISC can provide sufficient correlative gain even in the ultra low signal noise ratio (SNR) scenarios. Moreover, a fast fine symbol timing method based on the auto-correlation property of Sync sequence is also presented. According to the detection strategy for the significant channel taps, the specific information about channel profile can be obtained. The advantages of the proposed timing scheme over the traditional ones have been demonstrated through both theoretical analysis and numerical simulations.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E95.B.3786/_p

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@ARTICLE{e95-b_12_3786,
author={Yong WANG, Jian-hua GE, Jun HU, Bo AI, },
journal={IEICE TRANSACTIONS on Communications},
title={An Efficient OFDM Timing Synchronization for CMMB System},
year={2012},
volume={E95-B},
number={12},
pages={3786-3792},
abstract={An accurate and rapid synchronization scheme is a prerequisite for achieving high-quality multimedia transmission for wireless handheld terminals, e.g. China multimedia mobile broadcasting (CMMB) system. In this paper, an efficient orthogonal frequency division multiplexing (OFDM) timing synchronization scheme, which is robust to the doubly selective fading channel, is proposed for CMMB system. TS timing is derived by performing an inverse sliding correlation (ISC) between the segmented Sync sequences in the Beacon, which possesses the inverse conjugate symmetry (ICS) characteristic. The ISC can provide sufficient correlative gain even in the ultra low signal noise ratio (SNR) scenarios. Moreover, a fast fine symbol timing method based on the auto-correlation property of Sync sequence is also presented. According to the detection strategy for the significant channel taps, the specific information about channel profile can be obtained. The advantages of the proposed timing scheme over the traditional ones have been demonstrated through both theoretical analysis and numerical simulations.},
keywords={},
doi={10.1587/transcom.E95.B.3786},
ISSN={1745-1345},
month={December},}

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TY - JOUR
TI - An Efficient OFDM Timing Synchronization for CMMB System
T2 - IEICE TRANSACTIONS on Communications
SP - 3786
EP - 3792
AU - Yong WANG
AU - Jian-hua GE
AU - Jun HU
AU - Bo AI
PY - 2012
DO - 10.1587/transcom.E95.B.3786
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E95-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2012
AB - An accurate and rapid synchronization scheme is a prerequisite for achieving high-quality multimedia transmission for wireless handheld terminals, e.g. China multimedia mobile broadcasting (CMMB) system. In this paper, an efficient orthogonal frequency division multiplexing (OFDM) timing synchronization scheme, which is robust to the doubly selective fading channel, is proposed for CMMB system. TS timing is derived by performing an inverse sliding correlation (ISC) between the segmented Sync sequences in the Beacon, which possesses the inverse conjugate symmetry (ICS) characteristic. The ISC can provide sufficient correlative gain even in the ultra low signal noise ratio (SNR) scenarios. Moreover, a fast fine symbol timing method based on the auto-correlation property of Sync sequence is also presented. According to the detection strategy for the significant channel taps, the specific information about channel profile can be obtained. The advantages of the proposed timing scheme over the traditional ones have been demonstrated through both theoretical analysis and numerical simulations.
ER -