一种新型OOFDM 符号同步技术

doi:10.3969/j.issn.1007-2861.2013.02.005

Journal of Shanghai University（Natural Science Edition） ›› 2013, Vol. 19 ›› Issue (2): 132-137.doi: 10.3969/j.issn.1007-2861.2013.02.005

• Communication and Information Engineering • Previous Articles Next Articles

A New Technique of Symbol Synchronization for OOFDM

NI Bao-jing, LI Ying-chun, HAN Jing-long, JIANG Peng, FU Lei

Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China

Received:2012-11-28 Online:2013-04-30 Published:2013-04-30

Abstract

Abstract: A simple, low cost and robust scheme for optical orthogonal frequency division multiplexing (OOFDM) symbol synchronization is proposed and experimentally tested. The main idea is to load a direct current (DC) signal on a special subcarrier to achieve OFDM symbol synchronization at the receiver.
This techniqueis applicable to OFDM-PON (OFDM-passive optical network) system without additional bandwidth as the first zero subcarrier does not have any signal loaded originally. Using the proposed scheme, a real-time optical OFDM signal transmission at 2.667 Gbit/s over 20 km standard single-mode fiber is achieved. This scheme also offers an additional network security mechanism on the physical layer. Most importantly, it provides online real-time symbol synchronization for point-to-point and point-to-multipoint OOFDM network.

Key words: OFDM-passive optical network (OFDM-PON), optical orthogonal frequency division multiplexing (OOFDM), synchronization algorithm

CLC Number:

TN 915.63

NI Bao-jing, LI Ying-chun, HAN Jing-long, JIANG Peng, FU Lei. A New Technique of Symbol Synchronization for OOFDM[J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(2): 132-137.

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A New Technique of Symbol Synchronization for OOFDM

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