A novel modulation scheme for short range polymer optical fiber communications

A novel modulation scheme for short range polymer optical fiber communications
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一种用于短距离聚合物光纤通信的新型调制方案

DOI:
10.1088/2040-8978/15/10/105407
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发表时间:
2013-10
期刊:
影响因子:
2.1
通讯作者:
Peng, Linning
Peng, Linning
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Miao, Pu;Wu, Lenan;Peng, Linning

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为了充分利用阶跃型聚合物光纤(SI-POF)信道的频谱特性,提出了一种将离散多音调制和多进制相移键控相结合的混合调制方案。分析了新调制方案的离散线谱干扰和边带干扰分量。为了增强系统的抗干扰能力,引入了波形优化因子和一种新的数字符号生成方法。离线处理任意波形发生器和数字存储示波器被用来调查的传输性能。采用人眼安全的谐振腔发光二极管和PIN二极管,在红光650 nm处,实现了50 m SI-POF的强度调制直接探测系统,传输速率为510.5 Mbps。实验验证表明,使用新的方法,额外的比特率为19.5 Mbps的低信噪比区域获得。此外,在1×10−4的误码率(BER)下节省了6 dB的功率,因此可以实现更好的频谱效率。仿真结果表明,该方案可以提供更好的误码率性能,并在传输速率、功耗、频谱效率和误码率性能之间取得了较好的折衷。
To make use of the spectrum of a step-index polymer optical fiber (SI-POF) channel, a hybrid modulation scheme is proposed combining discrete multi-tone modulation and M-ary position phase shift keying. The discrete line spectrum interference and sideband interference components of the new modulation scheme are analyzed. The waveform optimization factor and a new numerical symbol generating approach are introduced to strengthen the anti-interference capability of the system. Offline processing with an arbitrary waveform generator and digital storage oscilloscope is used to investigate the transmission performance. A transmission rate of 510.5 Mbps is achieved for a 50 m SI-POF in an intensity modulated direct detection system using eye-safe resonant cavity light-emitting diodes and a PIN diode at red 650 nm. The experimental verification demonstrates that, using the new methodology, an additional bit rate of 19.5 Mbps in the low signal-to-noise ratio region is obtained. Furthermore there 6 dB power is saved at a bit error rate (BER) of 1×10−4, so better spectral efficiency can be achieved. It is demonstrated that the proposed scheme can offer better BER performance and make a better compromise between transmission rate, power consumption, spectral efficiency and BER.
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