In the optical communication device and the optical communication system using DPSK modulation whose cost is low, whose size is small and whose power consumption is low, the N:1 multiplexer 125 generates a serial signal by multiplexing a parallel signal coded by the DPSK modulation coding units ...
wemust usedigital baseband signal to modulatethe carriert,which canmake the signalmatch the channel characteristics.Modulation and demodulationtechnology is an important means to achieve modern communications, modulation and demodulation of digital communications theory,and it canprovide an effective way of...
Dpsk Modulation-Demodulation Method, and Optical Communication Device and Optical Communication System Using the Same In the optical communication device and the optical communication system using DPSK modulation whose cost is low, whose size is small and whose power consumption is low, the N:1 ...
DPSK MODULATION/DEMODULATION METHOD, AND OPTICAL COMMUNICATION DEVICE AND SYSTEM USING THE METHOD在便宜,小型,低功耗的使用DPSK调制的光通信设备和光通信系统中,N:1复用器(125)通过对经DPSK调制编码器(115～117)编码的并行信号逐位地进行时分复用来生成串行信号. In cheap, small, low-power use DPSK modulated...
Fig.3Thesimulationsystemof2DPSKmodulationanddemodulationsystem 3基于SystemView的2DPSK仿真分析 二进制基带信号经过异或门和延时器组成的差分编码器进行差分编码,把用绝对码表示的二进制基带信号转变为相对码表示的二进制信息,图4中上面的波形为设备0产生的双极性二进制基带信号。为了方便观察,我们将该波形上移了1V的电...
And then the DPSK modulation signal FM modulation, and finally get dual modulation signal. 解调模块首先对接收到的信号进行下边频和抽取处理,而后对降低速率的信号进行FM解调,节省硬件资源. Demodulation module first received signal frequency is lower and the extraction process, then reduce the rate of the...
Based on the researches of the effect of OCSS and the theory of MZ modulation, we deeply analyzed a new type of optical labeling technique—High Speed DPSK/OOK combined modulation optical label based on OCSS technique . 论文主要研究成果如下:1、研究了基于OCSS技术的DPSK/OOK联合调制信号产生的理论...
- 《IEEE Transactions on Microwave Theory & Techniques》 被引量: 155发表: 2002年 Simultaneous Implementation of All-Optical Microwave Bandpass Filtering and Up-Conversion for Radio-Over-Fiber Applications Based on single-sideband (SSB) modulation, a novel scheme to simultaneously implement all-optical...
关键词: demodulators differential phase shift keying error statistics filtering theory light interferometers optical correlation optical fibre communication optical fibre polarisation optical modulation BER penalty 会议时间: 2009 被引量: 2 收藏 引用 批量引用 报错 分享 全部来源 免费下载 求助全文 IEEEXplore...
uit,andgetadesignbehindofelectriccircuitandexportationresult. Keyword:communicatemodulationdemodulationfrequencyband 引言 背景及发展状况:数字通信是通信技术和计算机技术相结合而产生的一种新 的通信方式。要在两地间传输信息必须有传输信道,根据传输媒体的不同,有 ...