首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Time domain zero-padding based adaptive-PAM signal transmission with high spectral efficiency in IMDD optical communication system
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Time domain zero-padding based adaptive-PAM signal transmission with high spectral efficiency in IMDD optical communication system

机译:IMDD光通信系统中基于时域零填充的高频谱效率自适应PAM信号传输

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摘要

In this paper, an adaptive pulse amplitude modulation (APAM) scheme is proposed and experimentally demonstrated in the intensity-modulation and direct-detection (IMDD) optical communications system. In the proposed scheme, the channel is divided into two sub-channels, and different PAM mapping can be chosen for different sub-channel according to the fading conditions. In addition, the 20-km standard single mode fiber (SSMF) transmission of 24 Gbit/s 16/4-APAM signal with the spectral efficiency (SE) up to 6 bit/s/Hz is experimentally demonstrated. The experiment results show that the bit error rate (BER) of the 16/4-APAM signal can be achieved less than 2.4e-2. (C) 2016 Elsevier B.V. All rights reserved.
机译:本文提出了一种自适应脉冲幅度调制(APAM)方案,并在强度调制和直接检测(IMDD)光通信系统中进行了实验证明。在该方案中,将信道分为两个子信道,并且可以根据衰落条件为不同的子信道选择不同的PAM映射。另外,实验证明了24 km 16 / 4-APAM信号的20 km标准单模光纤(SSMF)传输,频谱效率(SE)高达6 bit / s / Hz。实验结果表明16 / 4-APAM信号的误码率(BER)可以达到2.4e-2以下。 (C)2016 Elsevier B.V.保留所有权利。

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