Fiber-based-OFDM-Transmission

There were downloaded documents wich can be very useful for those who exploring Wireless Sensor Networks. There given all the information and scripts to creat or build the model you need.

说明：  利用通信系统中调制信号的循环平稳特性,对频谱空洞进行检测,提升频谱感知技术在低信噪比下的性能。实验结果表明:与传统能量检测方法相比,采用循环特征检测方法改善了认知无线电中频谱空洞的检测能力。(Based on the cyclostationarity of modulation signals, spectrum hole is detected, aiming at the improve- ment of the performance of spectrum sensing in low SNR situation. The results show that comparing with the tra- ditional energy detection technique, cyclostationarity-based spectrum sensing technique has greatly improved the detective ability in cognitive radio.)

在TOA测距的基础上，提出了一种三维无线传感器网络节点定位算法，并对其性能进行了分析，给出了算法的时间同步误差和定位误差。最后在现有仿真平台OMNET++的基础上构建三维仿真模块，对算法进行了仿真实现，给出了该算法的定位精度和覆盖率(This paper proposes one three-dimensional localization algorithm based on TOA distance measurement and analyzed the performance of the algorithm calculated time synchronization error and localization error. Finally it constructed three-dimensional simulation modules based on OMNET++ and implemented the algorithm educed the localization precision and coverage.)

华为内部员工学习资料，对于想进华为的朋友会有很大帮助。(The internal staff s learning materials in huawei is more helpfull for someone who want to go huawei.)

14所编写的精密跟踪雷达图书，内容包括概论，雷达跟踪测量基础，单脉冲技术，跟踪雷达测量精度分析，跟踪雷达测量天线技术，接收机技术，距离跟踪技术，角跟踪伺服系统，多普勒测速技术等(The book of precision tracking radar written by 14 institute)

DL/T645-2007清晰文本版，可以CTRL+F(DL/T645-2007 clear text version, you can CTRL+ F)

mimo document problems

manual leica geooffice

说明：  用VHDL语言在CPLD/FPGA上实现浮点运算的方法(in VHDL CPLD/FPGA achieve floating-point computation methods)

并联机构工作空间的求解，主要针对6sps结构。(parallel manipulator workspace .)