Description: 信号在信道进行传输时，经常会出现串扰，采用基于最大似然序列估计（MLSE）的电子色散均衡器的方法，克服光纤通信中的由各种色散引起的码间干扰。
研究基于最大似然序列估计（MLSE）的均衡器，采用维特比算法实现，用matlab仿真出采用MLSE后的性能指标（眼图和误码率）的提升。
-Signal transmission channel often occur crosstalk, based on the maximum likelihood sequence estimation (MLSE) electronic dispersion equalizer of the ways to overcome optical fiber communications in a variety of dispersion caused by the inter-symbol interference. Research based on the maximum likelihood sequence estimation (MLSE) of the equalizer, the Viterbi algorithm, a simulation using matlab after using MLSE performance indicators (eye diagram and bit error rate) of the upgrade. Platform: |
Size: 9216 |
Author:Lee |
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Description: 信号在信道进行传输时，经常会出现串扰，采用基于最大似然序列估计（MLSE）的电子色散均衡器的方法，克服光纤通信中的由各种色散引起的码间干扰。 研究基于最大似然序列估计（MLSE）的均衡器，采用维特比算法实现，用matlab仿真出采用MLSE后的性能指标（眼图和误码率）的提升。 -Signal transmission channel often occur crosstalk, based on the maximum likelihood sequence estimation (MLSE) electronic dispersion equalizer ways to overcome optical fiber communications in a variety of dispersion caused by the inter-symbol interference. Research based on the maximum likelihood sequence estimation (MLSE) of the equalizer, the Viterbi algorithm, a simulation using matlab after using MLSE performance indicators (eye diagram and bit error rate) of the upgrade. Platform: |
Size: 240640 |
Author:Lee |
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Description: matlab实现的OFDM运用于ROF光纤无线通信系统的仿真，用的是4QAM调制，LS信道估计，还包括Optisystem的仿真，是毕设的仿真，非常珍贵。-matlab achieve ROF optical fiber used in the OFDM wireless communication system simulation, using 4QAM modulation, LS channel estimation, the simulation also includes Optisystem is a complete set of simulation, very precious. Platform: |
Size: 25600 |
Author:Ruby |
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Description: This communication presents an alysis of the design and fabrication of power-efficient, low
cost VCSEL-based optical transceiver proposed for emerging fiber data distributed interface
(FDDI) and fiber channel local-area network (FCLAN
to meet the increasing amount of information transmitted through communication networks.
VCSEL devices operating at low temperature display decrease jitter, increase output power
and enhance lifetime. Also, temperature gradient on large opto-electronic (OE) device arrays
generates performance non-uniformities and lowers the bit-error-rate (BER) of the optical
links. In addition, lowering the power consumption of optical transceivers contributes to the
overall reduction of the system power budget.-This communication presents an analysis of the design and fabrication of power-efficient, low
cost VCSEL-based optical transceiver proposed for emerging fiber data distributed interface
(FDDI) and fiber channel local-area network (FCLAN
to meet the increasing amount of information transmitted through communication networks.
VCSEL devices operating at low temperature display decrease jitter, increase output power
and enhance lifetime. Also, temperature gradient on large opto-electronic (OE) device arrays
generates performance non-uniformities and lowers the bit-error-rate (BER) of the optical
links. In addition, lowering the power consumption of optical transceivers contributes to the
overall reduction of the system power budget. Platform: |
Size: 40960 |
Author:Eng.Sam |
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Description: 提出了一种基于FPGA 的数字复接电路的设计方法, 将多路视频信息复用为一路信息,
利用光纤传输平台进行传输, 提高了传输效率和传输质量, 改善了环境适应性. 在AL TERA 公司
的Q uartu s II 软件平台下, 应用VHDL 语言进行硬件电路的设计, 并给出了仿真结果.
关键词 视频信息, FPGA , 数字复接, 光纤通信-Presents a FPGA-based digital multiplexing circuit design method, multi-channel video information re-used as a way of information, the use of optical fiber transmission platform transmission, improve transmission efficiency and transmission quality, and improve the adaptability to environment. In AL TERA Q uartu s II the company' s software platform, the application of VHDL language hardware circuit design and simulation results. Keywords video information, FPGA, digital multiplexer, optical fiber communication Platform: |
Size: 157696 |
Author:renxiang |
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Description: 本论文在简要阐述了各种光纤数字传输系统技术及其原理的基础上，通过比选确定出了符合钦州至崇左路段的较先进的光纤数字传输系统方案，确定其光纤通信系统采用SDH传输方案。在SDH传送网分层模型的基础上，对SDH传送网各层功能、信号流程、网络配置作了详细的阐述，同时说明了SDH传送网特有的复用映射原理。根据钦州至崇左路段的实际情况计算确定了系统中的重要参数，选择出了网络拓扑结构，按最坏值设计法进行了中继段长度的计算，编制了网络组织图、通道组织图及通信系统总体框图等。所设计的的高速公路光纤数字传输系统达到了能够同时传输语音、数据及图像的要求，并且满足了容量要求，实现了与相邻高速公路通信系统的相互连接。-The article,through compared to elects to determine,has conformed to Qinzhou to the Chongzuo road section ,which advanced optical fiber digital transmission system plan, had determined the optical fiber communications system using the SDH transmission plan in the principle foundation.In the SDH transmission network model foundation, each function of SDH transmission network,the signal flow simultaneously explained the SDH transmission network which uniqued multiplying mapping inciple.The computation had determined the system important parameter,had carried the worst value design law,the channel drafted pattern and the communications system overall diagram and so on. The highway optical fiber digital transmission system, hadbeen designed had achieved simultaneously transmiting the pronunciation on,the data and the image requestion has satisfied the capacity which has realized neighboring highway communications system mutual connection.
Keywords： Expressway communication system O Platform: |
Size: 851968 |
Author:lsj |
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Description: Abstract—As for the problems of complexity and long cycle
in the DWDM design, part of problems needed to be
considered in DWDM system design were analyzed. An
optimized point-to-point DWDM transmission system was
designed. Optical fiber communication system with 40Gbit /
s and 32 channel was designed and simulated by Optisystem.
Based on the study above, the model witch can inhibit
dispersion and fiber linear loss has been successfully
manufactured Platform: |
Size: 467968 |
Author:alaa |
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Description: A Novel Method of All-Optical Switching: Quantum Router.
Subpicosecond all-optical switching method based on the simultaneous two-photon coherence exchange is proposed and numerically demonstrated. The optical switching mechanism is based on the optical field induced dark resonance
swapping via nondegenerate four-wave mixing processes. For potential applications of ultrafast all-optical switching in fiber-optic communications, 10-THz channel number independent quantum router is discussed. Platform: |
Size: 297984 |
Author:Tien Tinh |
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Description: 均衡效果好，这是基于最大似然估计的均衡器-With the development of high-speed optical fiber communication systems, polarization
mode dispersion (PMD) has become a vital limiting factor. However, the traditional
compensation methods which in optical domain have the disadvantages of complexity and cost.
In recent years, the compensation methods which in electronic domain are given more attention
because of their outstanding price advantage and their strong adaptability.
The maximum-likehihood sequence estimation (MLSE) equalizer based on the Viterbi
algorithm was designed in this paper.The MLSE equalizer can effectively compensate the
intersymbol interference caused by polarization mode dispersion (PMD). First, the background
and the spectrum of the text were introduced also the principles of PMD and the FFE/DFE
equalizer were analysed. Second, the principles of Viterbi and the structure of MLSE were
researched also the MLSE equalizer was simulated with the Matlab program in the optical fiber
communication systems. T Platform: |
Size: 1383424 |
Author:心语蜗牛 |
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Description: matlab实现的OFDM运用于ROF光纤无线通信系统的仿真，用的是4QAM调制，LS信道估计，还包括Optisystem的仿真-simulation matlab achieve ROF optical fiber used in the OFDM wireless communication system, using 4QAM modulation, LS channel estimation, simulation also includes Optisystem Platform: |
Size: 1024 |
Author:Poul |
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Description: 2通道HDCVI视频光端机：实现两个高速AD转换采集HDCVI信号，编码扰码后通过光纤远距离传输，对端收到后解码通过高速DA转换为HDCVI信号。-2 channel HDCVI video Guangduan Ji: two high-speed AD acquisition signal conversion HDCVI, scrambling code via the optical fiber remote transmission, receives an end after decoding by high-speed DA conversion signal is HDCVI. Platform: |
Size: 4096 |
Author:huangyong |
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Description: The all-optical wavelength conversion gives flexibilities to the optical fiber communication
networks, especially to the wavelength-division-multiplexed (WDM)-based ones, because it allows
them to reuse wavelengths and to avoid wavelength channel contentions [l-21. Recently, we
proposed a novel cross-phase modulation (XPM) wavelength converter that had a directionallycoupled
semiconductor optical amplifier (DCSOA) structure, and reported its preliminary results of
simulation, Platform: |
Size: 131072 |
Author:wail |
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Description: 在AWGN信道模型下，对比ACO-OFDM和其他调制方式对光纤通信系统性能，将ACO-OFDM与一些调制技术相结合来进一步提高系统宽带效率、降低光发送功率等，以提升光纤通信系统的性能-In AWGN channel model, compared to ACO-OFDM and other modulation schemes for optical fiber communication system performance, the ACO-OFDM with some modulation techniques combined to further improve the system broadband efficiency and reduce light transmission power so as to enhance the performance of optical fiber communication systems Platform: |
Size: 1024 |
Author:胡江川 |
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Description: Multimode optical fiber channel characteristic research, mainly based on the high band characteristics of multimode fiber Platform: |
Size: 2048 |
Author:DPUR-861 |
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Description: 多模光纤的信道特性研究,主要针对多模光纤的高频带通特性(Multimode optical fiber channel characteristic research, mainly based on the high band characteristics of multimode fiber) Platform: |
Size: 1024 |
Author:exechte
|
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Description: 光纤通信系统中的相干光仿真，包括数字信号处理的全部过程和光纤信道的建模，针对16QAM的调制格式，带有Nyquist信号生成(Coherent light simulation in optical fiber communication system, including the whole process of digital signal processing and the modeling of optical fiber channel) Platform: |
Size: 8168448 |
Author:响当当
|
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Search - optical fiber channel