hunhebiancheng

： 正交频分复用( O F D M) 是第四代移动通信的核心技术。 该文首先简要介绍了O F D M基本原理， 重点研究了理想同步情 况下， 保护时隙( c P )和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对O F D M系统性能的影响。 在给出O F DM系 统模型的基础上， 用 MAT L A B语言实现了整个系统的计算机仿真并给出参考设计程序。 最后给出在不同的信道条件下， 保 护时隙、 信道估计方法对 OF DM系统误码率影响的比较曲线， 得出了较理想的结论。 关键词： 正交频分复用； 仿真； 循环前缀； 信道估计(good)

古高科技公司的运动控制卡GE_400系列Demo例程(Ancient tech companies Motion Control Card GE_400 Series Demo routines)

背景移动补偿技术的研究，是关于车辆检测期间对于背景移动的情况进进行的补偿技术的改进性的研究，希望对大家有所帮助。 已通过测试。 (Background compensation mobile technology, are about the context of vehicle detection during the moovement for the compensation technique to improve the research, hoping for U.S. help. Have passed the )

二维码操作程序示例二维码操作程序示例二维码操作程序示例二维码操作程序示例(Two-dimensional example of a program of two-dimensional code code example of a program of two-dimensional example of a program of two-dimensional code code example of a program)

opencv里面像matlab那样显示直方图，解决了opencv没有显示直方图的缺陷。(opencv as it shows as histogram matlab to solve opencv histogram did not show defects.)

电机控制系统，02年开始积累，效果好，速度快，PI控制，经典控制，fuzzy PID，自适应控制，速度位置控制等等，欢迎大家参考。(Servo motor control system, in 2002 began to accumulate, effective, fast, PI control, classical control, fuzzy PID, adaptive control, speed position control, etc., we welcome the reference.)

该程序是基于MATLAB的磁悬浮系统连续控制的具体程序实现(The program is based on the specific program MATLAB maglev system to achieve continuous control)

详细讲述了直接序列扩频差分锁相环的文章，包含具体的算法结构，并附有仿真结果。(A novel differentially coherent delay-locked loop(DCDLL) for accurate code tracking is proposed for direct sequence spread spectrum systems. Due to the use of the differential decoder and exactly one correlator, the proposed scheme avoids the problems of gain imbalance. The tracking error variance is derived by linear analysis. When the proposed DCDLL scheme is applied in ranging with additive white Gaussian noise (AWGN) channel, the performance of the proposed DCDLL scheme is about 1.4 dB better than that of one-correlator tau–dither loop (TDL), and near that of noncoherent DLL.)

含：分析物理磁盘的分区表和各分区的bootsector for bitlocker以及WINDOWS下设备枚举.(including : Analysis of the physical disk partition table and the district for the bootsector bitlocker and W INDOWS equipment under enumeration.)

Data Abstraction & Problem Solving with C++源码(Data Abstraction )