Time domain zero-padding based adaptive-PAM signal transmission with high spectral efficiency in IMDD optical communication system

Time domain zero-padding based adaptive-PAM signal transmission with high spectral efficiency in IMDD optical communication system
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IMDD光通信系统中基于时域补零的高频谱效率自适应PAM信号传输

DOI:
10.1016/j.optcom.2016.04.009
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发表时间:
2016-08
影响因子:
2.4
通讯作者:
Lin Chen
Lin Chen
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Fangliu Zhang;Jing He;Rui Deng;Yun Cheng;Minlei Xiao;Lin Chen

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本文提出了一种自适应脉冲幅度调制(APAM)方案,并在强度调制与直接检测(IMDD)光通信系统中进行了实验验证。该方案将信道划分为两个子信道,并根据衰落情况对不同的子信道选择不同的PAM映射。此外,实验证明了20公里标准单模光纤(SSMF)传输24 Gbit/s 16/4-APAM信号,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)可以达到小于2.4e−2。
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.
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