这是一个奇偶校验位的打传源码，脂肪是供大家学习的来回…

介绍了一种构建在定点DSP上的高速瑞利衰落信道仿真模型。通过应用确知性瑞利过程的理论，使得仅需要较少的低频正弦波分量以及简单的运算即可实现较高精度的信道建模；进而可采用查表法并结合TMS320C6202定点数字信号处理器的高并行性和处理能力构造高速的仿真模型-Construction of a fixed-point DSP in the high-speed Rayleigh fading channel simulation model. Through the application process unascertained Rayleigh theory, only need to make small low-frequency sine wave components and the simple operation can achieve higher accuracy Channel modeling; then use look-up table method and combination TMS320C6202 fixed-point digital signal processor parallel and can handle Construction of the high-speed simulation model

CRC校验TS流文件的的PSI信息表，分析TS流文件的PAT表、PMT表、SDT表（注意项目文件中没有TS文件，要运行程序需要加入TS文件，并简单修改文件OPEN函数的参数）。-CRC Checksum TS stream file information table of the PSI, analysis TS stream file PAT table, PMT table, SDT table (note that the project document did not TS files, to run the program need to join the TS file, and modify the file a simple function of the parameters OPEN ).

本课题应用DELPHI作为开发环境设计了针对对西门子公司的S7-200PLC的串口调试程序，并能在界面上显示多时段交通灯控制系统PLC控制程序所分配的存储区，实时读取各存储区的当前状态。-This application development environment design for a DELPHI of Siemens company in the serial of S7-200 PLC program, and can debugging interface display more time traffic control system, PLC program allocation of storage area, read the current state of the store.

A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；-have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum;

MSK/GMSK的各种解调方式汇总，包含理论推导和软硬件实现的详细介绍-MSK/GMSK Demodulation summary of the various, including the theoretical derivation and detailed description of hardware and software to achieve

OPNET仿真案例，初学者有用，图文说明-OPNET simulation cases, useful for beginners, Graphic Help

这是我同学在公司编写的VITERBI译码算法，已经得到肯定-This is my classmate in the company prepared VITERBI decoding algorithm, which has been affirmed

应用背景我们提出了分散认知的协议允许二级用户自主搜索频谱没有中央协调员或专门的机会通信信道。硬件和能量约束，我们假设一个二级用户可能无法执行全频谱感知或可能不愿意监控没有数据传输时的频谱。我们发展基于机会频谱接入的分析框架部分可观测马尔可夫决策理论的研究（POMDP）。这一决策理论方法集成了设计频谱接入协议的频谱接入协议确定的物理层和交通统计由原网络应用层。它也允许频谱感知误差和约束容易合并与主要用户的碰撞概率。在此POMDP框架，我们提出了认知MAC协议优化二次用户的性能，同时限制主用户的干扰。次优策略与减少的复杂性，但可比性能的发展。无需附加控制信息交换次级发射机和接收机，建议分散协议确保在频谱之间的同步跳频在碰撞和碰撞的存在下，发射器和接收器频谱感知误差。关键技术本文提出了一种分散的方法Ad hoc网络MAC OSA。一种新的特征这项工作是剥削的机会，在插槽水平，允许低利率应用（如传感器节点）与主要用户。POMDP框架使一个机会用户使最优基于信念向量的感知和访问决策总结了基于网络状态的知识对所有过去的决定和意见

modbus 协议 中文版本-Chinese version of Modbus protocol

一个CONN数据库连接程序,效率比较高-a database connections and more efficient