hack

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.)

选取CDMA通信系统中的接入信道部分进行仿真与分析。首先，通过学习相应的理论知识，熟悉接入信道实现的过程，对每一步的原理有了较深的理解，同时，也对MATALB软件进行熟悉和了解，对MATLAB软件中的SIMULINK部分及其内部的CDMA模块用法和参数设置进行熟悉，然后运用MATLAB软件对接入信道部分进行设计，并逐步地对各个模块进行分析、仿真与验证。目的是通过毕业设计工作熟悉现代无线通信系统的基本构成与基本工作原理(CDMA communication system to select the access channel simulation and analysis of parts. First of all, by learning the theory of knowledge, familiar with the access channel to achieve the process, with each step deeper understanding of the principle, at the same time, but also familiar with the software MATALB and understanding of the MATLAB software and its internal part of the SIMULINK use of the CDMA module and parameter settings are familiar with, and then use MATLAB software to access parts of the design of channel and step by step analysis of each module, simulation and verification. The purpose of design work through graduate familiar with the modern wireless communication systems constitute the basic and fundamental principle,)

标准卡尔曼滤波对船的航线进行滤波处理，方便导航定位。(Standard Kalman filter for filtering routes boat handling, easy navigation and positioning.)

瑞利分布＋杂波雷达信号MATLAB仿真程序源码，希望望对有做雷达信号的朋友有帮助 可直接使用。 已通过测试。 (Rayleigh distribution+ hybrid radar signal MATLAB simulation program source code, I hope to look on the friend of a radar signal to help can be used directly. Has been tested.)

一个实例说明matlab coder的使用方法，可以实现vc++中调用matlab生成的cpp文件进行两个数的乘法计算。(An example shows the use of matlab coder, can call matlab in vc++ cpp files generated multiplication of two numbers.)

一阶熵、二阶熵和差分熵c++程序 求熵用的 (A first order, second order entropy and entropy difference entropy ofc++ program)

C/C++精华,注意编程时容易出错的方面,精选相关的注意事项.(C/C++ lessions, pay attention to some sides which is easy to make mistakes.)

Arduino平台上的计时器，主要用于定时中断的库文件，能够有效解决Arduino没有定时中断的问题(Arduino timer library platform, mainly for the timer interrupt, can effectively solve the problem of Arduino no timer interrupt)

PSO算法——由matlab和C++源代码组成(PSO algorithm-- from Matlab and C source code components)

that project is complete nurse call system using ATxmega64 and atmega32 with the complete tested design ...