Research on modified selected mapping technique for PAPR reduction and reception performance improvement in 8QAM-OFDM optical access systems

IF 1.9 4区物理与天体物理 Q3 OPTICS

Journal of the European Optical Society-Rapid Publications Pub Date : 2017-11-16 DOI:10.1186/s41476-017-0064-6

Yufeng Shao, Wenzhe Ma

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Abstract

Orthogonal frequency division multiplexing has been regarded as one of the promising technologies for the optical access systems application. However, high peak-to-average power ratio will cause the signal distortion and enable the used amplifier to operate in nonlinear section.

In this paper, a modified selected mapping technique is introduced for reducing the peak-to-average power ratio and enhancing reception performance of the downstream 8QAM-OFDM signals in optical access systems.

Compared with the traditional selected mapping technique, the PAPR value of 8QAM-OFDM optical downstream signals with 128 subcarriers is reduced by almost 2 dB using modified SLM when the complementary cumulative distribution function probability value is 10?2. Moreover, the bit error rate performance will be improved, while 10Gbit/s 8QAM-OFDM optical downlink signals are transmitted over single mode fiber with different access length.

Hence, the proposed scheme becomes more efficient for the future optical orthogonal frequency division multiplexing access systems.

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8QAM-OFDM光接入系统中减小PAPR和提高接收性能的改进选择映射技术研究

正交频分复用技术已被认为是光接入系统中很有前途的技术之一。然而，高的峰均功率比会导致信号失真，使所用放大器工作在非线性截面。本文介绍了一种改进的选择映射技术，用于光接入系统中降低8QAM-OFDM下行信号的峰均功率比和提高接收性能。与传统的选择映射技术相比，当互补累积分布函数概率值为10?2时，采用改进的SLM技术，具有128个子载波的8QAM-OFDM光下行信号的PAPR值降低了近2 dB。当10Gbit/s 8QAM-OFDM光下行信号在不同接入长度的单模光纤上传输时，误码率性能将得到提高。因此，该方案对于未来的光正交频分复用接入系统具有更高的效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the European Optical Society-Rapid Publications 物理-光学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

5 weeks

期刊介绍： Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry. Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research. The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics. The journal covers both fundamental and applied topics, including but not limited to: Classical and quantum optics Light/matter interaction Optical communication Micro- and nanooptics Nonlinear optical phenomena Optical materials Optical metrology Optical spectroscopy Colour research Nano and metamaterials Modern photonics technology Optical engineering, design and instrumentation Optical applications in bio-physics and medicine Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.