mainTEM1_good

basic c++ related notes2

说明：  水准网平差。能实现一般水平常见的水准平差计算(shuizhunwang ping cha)

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.)

说明：  5. 在三条径的瑞利信道中，对于直接序列扩频： (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(5. In three-path Rayleigh channel, for direct sequence spread spectrum: (1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate. (2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve. (3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve.)

提供一个随机有限元的学习资料，希望对大家有所帮助(Provides a stochastic finite element learning material)

基于虚拟仪器技术,采用NI公司PCI-4472采集卡及LabVIEW7. 1开发柴油机缸盖振动信号采集分析系统。 (Based on virtual instrument technology, the company used NI acquisition card PCI-4472 and LabVIEW7. 1 the development of diesel engine cylinder head vibration signal acquisition analysis system.)

Mailtool - managing the message composition window.

一段vc++的dll的编程代码，主要通过dll访问并口，通过并口收发数据(section of the dll vc programming code, mainly through dll visit Parallel, through the parallel port data transceiver)

说明：  由于在单道批处理系统中,它就占有计算机的一切资源直到作业完成为止(Because in a single batch system, it occupies all the resources of the computer until the job is complete)

CWNA Certified Wireless Network Administrator Study Guide David D. David D. Coleman David A. Westcott