OLT-centralized sampling frequency offset compensation scheme for OFDM-PON

被引：26

作者：

Chen, Ming ^{[1
]}

Zhou, Hui ^{[1
]}

Zheng, Zhiwei ^{[1
]}

Deng, Rui ^{[2
]}

Chen, Qinghui ^{[2
]}

Peng, Miao ^{[1
]}

Liu, Cuiwei ^{[1
]}

He, Jing ^{[2
]}

Chen, Lin ^{[2
]}

Tang, Xionggui ^{[1
]}

机构：

[1] Hunan Normal Univ, Coll Phys & Informat Sci, Changsha 410081, Hunan, Peoples R China

[2] Hunan Univ, Coll Comp Sci & Elect Engn, Changsha 410082, Hunan, Peoples R China

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 16期

关键词：

TRANSMISSION; SYNCHRONIZATION; SYSTEM;

D O I：

10.1364/OE.25.019508

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose an optical line terminal (OLT)-centralized sampling frequency offset (SFO) compensation scheme for adaptively-modulated OFDM-PON systems. By using the proposed SFO scheme, the phase rotation and inter-symbol interference (ISI) caused by SFOs between OLT and multiple optical network units (ONUs) can be centrally compensated in the OLT, which reduces the complexity of ONUs. Firstly, the optimal fast Fourier transform (FFT) size is identified in the intensity-modulated and direct-detection (IMDD) OFDM system in the presence of SFO. Then, the proposed SFO compensation scheme including phase rotation modulation (PRM) and length-adaptive OFDM frame has been experimentally demonstrated in the downlink transmission of an adaptively modulated optical OFDM with the optimal FFT size. The experimental results show that up to +/- 300 ppm SFO can be successfully compensated without introducing any receiver performance penalties. (C) 2017 Optical Society of America

引用

页码：19508 / 19516

页数：9

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