[1]陈彬,张胜利,程凌浩,等.基于幅度估计的光相干检测增强方法[J].深圳大学学报理工版,2011,28(No.2(095-188)):161-164.
　CHEN Bin,ZHANG Sheng-li,CHENG Ling-hao,et al.The enhancement of optical coherent detection by amplitude estimation[J].Journal of Shenzhen University Science and Engineering,2011,28(No.2(095-188)):161-164.
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基于幅度估计的光相干检测增强方法()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第28卷
期数:
2011年No.2(095-188)
页码:
161-164
栏目:
电子与信息工程
出版日期:
2011-03-20

文章信息/Info

Title:
The enhancement of optical coherent detection by amplitude estimation
文章编号:
1000-2618(2011)02-0161-04
作者:
陈彬1; 张胜利1; 程凌浩2; 李朝辉2; 王晖1; 崔石3
1）深圳大学信息工程学院， 深圳 518060
2）暨南大学光子技术研究所，广州 510632
3）中国科学院高能物理研究所计算中心， 北京 100049
Author(s):
CHEN Bin1; ZHANG Sheng-li1; CHENG Ling-hao2; LI Zhao-hui2; WANG Hui1; and CUI Shi3
1）The College of Information Engineering，Shenzhen University，Shenzhen 518060，P．R．China
2）The Institute of Photonics Technology，Jinan University，Guangzhou 510632，P．R．China
3）Computing Center，Institute of High Energy Physics，Chinese Academy of Sciences，Beijing 100049，P．R．China
关键词:
通信技术; 相干光通信; 相干接收; 正交幅度调制; 相移监控
Keywords:
communication technology;  optical communication technology;  coherent detection; quadrature amplitude modulation (QAM); phase-shift keying (PSK)
分类号:
TN 929.11； TN 929.13
文献标志码:
A
摘要:
研究增强光相干接收中的幅度估计方法．利用传统平衡接收方法中被抵消的功率信息进行幅度估计，提高QAM信号检测准确性．仿真结果表明，该方法与传统平衡接收方法相比，在接收16QAM和64QAM的调制信号时，两者均可增加1 dB左右的信噪比容限．
Abstract:
In optical coherent communication systems，balanced photodetectors were typically employed. Such photodetectors preserved the product of the received optical signals and the local oscillators (LO) for detection but cancelled out the power of both. A new detection scheme which aims to maintain the full information obtained from the photodetectors was proposed. Not only the product of the signals and the LO but also the power of signals were used to estimate the amplitude of the target signals. For 16-qudrature-amplitude-modulation (16-QAM) and 64-QAM signals，the simulation results show that the new scheme can outperform the conventional balanced detection method by more than 1 dB in SNR.

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备注/Memo

备注/Memo:
收稿日期：2010-05-30；修回日期：2010-10-28
基金项目：教育部留学回国人员科研启动基金资助项目（教外司留［2009］8）；深圳大学科研启动基金资助项目(200865)
作者简介：陈彬（1975-），男（汉族），湖南省澧县人，深圳大学讲师、博士．E-mail：bchen@szu.edu.cn
通讯作者：王晖（1969-），男（汉族），深圳大学教授．E-mail：wanghsz@szu.edu.cn
更新日期/Last Update: 2011-03-28