canopen协议中文版，比英文版更易读懂和理解
The Chinese version of the CANopen protocol is easier to read and understand than the English version (2017-08-04, PDF, 7147KB, 下载17次)
提出一种回溯策略以降低LDPC码在高信噪比区域的错误平层
A backtracking strategy is proposed to lower the error floor in the high signal-to-noise region (2017-05-31, PDF, 712KB, 下载3次)
LoadRunner，是一种预测系统行为和性能的负载测试工具。通过以模拟上千万用户实施并发负载及实时性能监测的方式来确认和查找问题，LoadRunner能够对整个企业架构进行测试
LoadRunner, a prediction system behavior and performance load testing tool. Implementation of concurrent load and real-time performance monitoring to simulate tens of millions of users to identify and find the problem, LoadRunner can test the entire enterprise architecture (2013-04-12, PDF, 1611KB, 下载6次)
针对锁频锁相器( Phase and Frequency Detector, PFD) 应用于低信噪比、大频偏的条件, 通过理论分析和仿真验证阐述了窗口类型对系统频偏捕获速度、范围、噪声门限及相位噪声抖动的影响机理. 推导出等效相位噪声功率谱密度的表达式. 证明了大窗口具有更低的噪声门限和更小的稳态相位抖动, 但捕获速度较慢. 为了提高捕获速度, 对鉴相器输出值取极性运算得到改进的PFD 算法. 新算法不仅能增加鉴相增益提高捕获速度 还可以减少等效噪声功率谱密度降低相位抖动 同时新算法不需要乘法器便于硬件实现. 最后新算法的性能通过仿真得到了验证.
For frequency-locking phase-locked (Phase and the Frequency Detector PFD) conditions applied to the low signal to noise ratio, frequency offset, through theoretical analysis and simulation described the capture speed of the window type, the system frequency deviation, range, noise threshold and phase noise jitter mechanism. equivalent phase noise power spectral density expression is derived to prove the large windows with a lower noise threshold and the steady-state phase jitter, but to capture slow in order to improve the capture speed, The phase detector output value to take the polarity operator improved PFD algorithm. new algorithm not only can increase the phase gain to improve the capture speed can also reduce the equivalent noise power spectral density to reduce the phase jitter new algorithm does not require a multiplier to facilitate hardware implementation performance of the last new algorithm has been verified through simulation. (2012-06-14, PDF, 456KB, 下载34次)
航空电子全双工交换式以太网（AFDX）的中文版规范，即ARINC 664 part 7 的汉化版，对于AFDX网络的设计人员来说有一定的帮助。
Standardized Chinese version of the Avionics Full Duplex Switched Ethernet (AFDX), ARINC 664 Part 7 of the finished version for AFDX network design is of some help. (2012-05-09, PDF, 639KB, 下载111次)
IEEE标准的信息技术，电信和信息交换系统，局域网和城域网网络的具体要求
IEEE Standard for Information technology,Telecommunications and information exchange between systems,Local and metropolitan area networks,Specific requirements (2012-03-19, PDF, 2288KB, 下载3次)
这本由樊昌信所编的通信原理一书一直被奉作通信技术届的经典之作。
Written by Fan Changxin communication theory taught in the communication theory classic, is an essential textbook for learning communication technology students. (2012-02-21, PDF, 18565KB, 下载11次)
。研究了瑞利衰落信道下两跳放大前传协作中继系统的最优化功率分配问题。推导了高信噪比条件下的协作中继系统的中断概率的理论公式.
协作中继 放大前传 最优化功率分配 误符号率 中断概率
Optimal power allocation for two hops amplify- and- forward cooperative relaying communication systems in Rayleigh fading channel was studied.
cooperative relaying amplify-and-forward optimal power allocation symbol error rate outage probability (2011-11-29, PDF, 326KB, 下载217次)
联通现有的爱立信 基站设备的培训资料，实用有效。
Unicom' s existing base station equipment of Ericsson training materials, practical and effective. (2011-11-13, PDF, 947KB, 下载5次)
GSM11.11，SIM卡文件介绍的文档，适用于跟SIM卡开关相关的各种产家参考阅读。
SIM card file documents presented for the SIM card switch with a variety of products related to home reference to read. (2011-09-13, PDF, 463KB, 下载8次)
本文提出特征参数统计值的概念，即对连续的多段信
特征参数后，所求取的多组参数中各参数的最大值、最小值及二
以此作为输入参数，利用基于BP神经网络和决策理论的模式识
星统一载波测控体制中典型的调制方式进行了识别，包括2FSK
)、4FSK、BPSK、QPSK、MSK、PM、CW
In this paper, the concept of characteristic parameters of statistics, that the letter of the continuous multi-segment feature parameters, the strike of multiple parameters each parameter of the maximum, minimum, and two as an input parameter, the use of neural networks and decision-making based on BP Star unified theory of pattern recognition and control system in a typical carrier modulation has been identified, including 2FSK), 4FSK, BPSK, QPSK, MSK, PM, CW (2011-08-07, PDF, 720KB, 下载25次)
重点研究
了低信噪比﹑多径瑞利衰落信道条件下，基于高阶累积量的OFDM信号盲识别技
术。提出了利用奇数阶累积量区分OFDM信号与单载波信号的方法，并对基于三
阶和五阶累积量的算法进行了仿真分析。
﹑ Focus on the low SNR multipath Rayleigh fading channel conditions, based on cumulant OFDM signal blind identification technology. Made a distinction between the use of odd-order cumulants single-carrier OFDM signal with the signal approach, and based on the cumulative amount of third-order and fifth-order algorithm for the simulation. (2011-08-06, PDF, 1182KB, 下载52次)
本书详细论述了光纤中的各种非线性效应.全书共分 10章.分别介绍了光纤和非线性光学，光纤模式及有非线性源时脉冲的传输，综述了光纤中的基本传输方程的数值方法、群速度色散、自相位调制、··… 等内容.本书自始至终强调了各种非线性效应对光ill信的影响，对从事非线性光纤光学研究及光纤通信的科研人员及大学教师、本科生和研究生是一本非常有用的参考书.
This book discusses in detail the various nonlinear optical effects. The book is divided into 10 chapters. Introduced the fiber and nonlinear optics, optical fiber non-linear source model and the pulse transmission, an overview of the basic fiber transfer equation and numerical method, group velocity dispersion, self phase modulation,** ... and so on. This book consistently emphasize a variety of nonlinear effects of light ill effects of the letter, engaged in non-linear fiber optics and fiber optic communications R & D personnel and university teachers, undergraduate and graduate students are a very useful reference book. (2009-11-11, PDF, 8641KB, 下载39次)
本书详细论述了光纤中的各种非线性效应.全书共分 10章.分别介绍了光纤和非线性光学，光纤模式及有非线性源时脉冲的传输，综述了光纤中的基本传输方程的数值方法、群速度色散、自相位调制、··… 等内容.本书自始至终强调了各种非线性效应对光ill信的影响，对从事非线性光纤光学研究及光纤通信的科研人员及大学教师、本科生和研究生是一本非常有用的参考书.
This book discusses in detail the various nonlinear optical effects. The book is divided into 10 chapters. Introduced the fiber and nonlinear optics, optical fiber non-linear source model and the pulse transmission, an overview of the basic fiber transfer equation and numerical method, group velocity dispersion, self phase modulation,** ... and so on. This book consistently emphasize a variety of nonlinear effects of light ill effects of the letter, engaged in non-linear fiber optics and fiber optic communications R & D personnel and university teachers, undergraduate and graduate students are a very useful reference book. (2009-11-11, PDF, 8401KB, 下载100次)
青岛鼎信载波表芯片数据手册,热点载波芯片TCS081.
Qingdao, a letter carrier table tripod chip data sheet, hot-carrier chip TCS081. (2009-11-07, PDF, 666KB, 下载22次)
青岛鼎信载波表芯片数据手册,热点载波芯片TCM081.
Qingdao, a letter carrier table tripod chip data sheet, hot-carrier chip TCM081. (2009-11-07, PDF, 637KB, 下载15次)
青岛鼎信载波表芯片,数据手册,热点载波芯片TCC081.
Qingdao, a letter carrier table tripod chips, data sheet, hot-carrier chip TCC081. (2009-11-07, PDF, 803KB, 下载14次)
Modbus通讯协议规范(中文),包括通讯例程,一看就懂。
Modbus Communication Protocol Specification (Chinese), including the communication routines, one look to understand. (2008-11-12, PDF, 90KB, 下载20次)
成都国腾微电子有限公司的GM812系列的串口扩展的PDF中文资料
Chengdu Guoteng Microelectronics Ltd. GM812 series of serial expansion of the PDF Chinese data (2005-12-28, PDF, 47KB, 下载1次)
成都国腾微电子有限公司的GM812系列的串口扩展的PDF中文资料
Chengdu Guoteng Microelectronics Ltd. GM812 series of serial expansion of the PDF Chinese data (2005-12-28, PDF, 47KB, 下载1次)