| D8PSK调制格式研究及其传输性能分析 |
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| 引用本文： | 柳雨晨,张晓磊,王拥军,忻向军.D8PSK调制格式研究及其传输性能分析[J].红外与激光工程,2012,41(5):1271-1276. |
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| 作者姓名： | 柳雨晨 张晓磊 王拥军 忻向军 |
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| 作者单位： | 北京邮电大学电子工程学院,北京,100876 |
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| 基金项目： | 国家"973"计划，国家自然科学基金，北京交通大学全光网络与现代通信网教育部重点实验室开放课题，光纤通信技术和网络国家重点实验室(筹)(武汉邮电科学研究院)开放基金，教育部新世纪优秀人才支持计划，北京邮电大学青年基金 |
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| 摘 要： | 研究了基于相位调制原理的新型调制格式差分八相相移键控(D8PSK),给出了串联和并联两种信号生成方案,对包括非归零码(NRZ)、33%占空比归零码(33%RZ)、50%占空比归零码(50%RZ)、载波抑制归零码(CSRZ)4种不同码型的生成方式进行了说明,对信号的接收过程和预编码公式进行了理论推导,并对系统进行了仿真。仿真系统中信号总速率达到100 Gbit/s,信号生成采用串联方式,信号接收采用4个马赫-曾德尔时延干涉仪(MZI)平衡检测接收机,色散补偿方式采用对称补偿,通过眼图可以看到其接收效果良好。最后对不同码型的D8PSK与DQPSK系统在抵抗群速度色散效应、非线性效应及偏振模色散效应3种主要影响系统传输性能的因素方面进行了分析比较。当眼图张开度代价为1dB时,CSRZ-D8PSK信号的群速度色散容限、非线性容限及偏振模色散容限分别为190ps/nm、4.4 dBm及24 ps,结果表明其具有较好的传输性能。
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| 关 键 词： | D8PSK 新型调制格式 不同码型的信号 传输性能分析 |
Research on D8PSK modulation formats and analysis of its transmission performance |
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| Liu Yuchen
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Zhang Xiaolei
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Wang Yongjun
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Xin Xiangjun.Research on D8PSK modulation formats and analysis of its transmission performance[J].Infrared and Laser Engineering,2012,41(5):1271-1276. |
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| Authors: | Liu Yuchen Zhang Xiaolei Wang Yongjun Xin Xiangjun |
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| Affiliation: | (School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China) |
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| Abstract: | Base on phase modulation,a new modulation format of differential 8-ary phase-shift keying(D8PSK) was studied;two generating schemes and four different mark-space ratio signals such as NRZD8PSK,RZ-D8PSK with 33% or 50% duty cycle and CSRZ-D8PSK were presented,respectively.The receiving processes and the differential precoder formula were derivated,and the system was demonstrated by simulation.In the simulation,the total rate of the D8PSK signal reached 100 Gbit/s,with series modulation generator,four Mach-Zehnder interferometers(MZI) balance detection receiver and symmetrical-compensation transmission model.As a result,the receiving effect is good in eye diagram.Moveover,under different mark-space ratio,the transmission performance influenced in the group velocity dispersion(GVD) impairment,nonlinear impairment and polarization mode dispersion(PMD) impairment were analyzed and compared with DQPSK.When the eye open penalty(EOP) was 1 dB,CSRZ-D8PS signal′s tolerances of GVD,nonlinear and PMD were 190 ps/nm,4.4 dBm and 24 ps.The results show that it has better transmission performance in general. |
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| Keywords: | D8PSK new modulation format different mark-space ratio signals analysis of transmission performance |
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