CDMASmsMessageEnDecoder

QT环境下开发的，用于测试电力通讯规约IEC103的一个程序(QT development environment for the testing of electrical communications statute a procedure IEC103)

恒模算法(CMA)是实际中应用最广的一种盲均衡算法,这里主要时提出了改进的lc-cma算法的源程序代码(Constant modulus algorithm (CMA) is one of the most widely used blind equalization algorithms in practice. In this paper, the source code of the improved lc-cma algorithm is proposed.)

本程序是写的是扩展高斯（EGF）滤波器，当两个输入为根号1/2的时候就是IOTA滤波器，用于通信系统发端的波形塑形(This function calculates a filter with egf characteristic)

自己编的lms算法，用于扩频通信抑制窄带干扰的时域预测仿真(Own the lms algorithm for narrowband interference suppression spread spectrum communication time-domain simulation of the forecast)

说明：  基于宏小区及微小区MIMO信道模型，比较了MIMO信道在两种传输环境中的空间相关特性，通过数值分 析方法得到了两类信道空间相关性随发送端、接收端天线阵列的分布而变化的特征曲线，并分析比较了信道参数， 即到达角的角度扩展，对空间相关性的影响。(The space correlation is analyzed in different propagation conditions including the MIMO macro-cell and micro-cell applications. The characteristics curves describing the space correlation versus the distance of antennas are obtained according to the numerical analysis. The effect of the spread of the angle of arrival on the space correlation is also investigated. )

利用MATLAB/Simulink建立直线电机模型(Using MATLAB/Simulink to establish a linear motor model)

封装了windows操作串口的几个API（CreateFile， ReadFile，WriteFile，SetComState）。串口的读写设置这几个操作都可以简单地只用关键一两个参数就能实现操作。也是一个很好的例子，我写这个之前查了不少资料，感觉非常麻烦，索性发出来给新手们作个样例(Windows serial COM port access class，it includes CreateFile, SetComState，ReadFile，WriteFile，CloseFile)

说明：  点亮led流水灯，通过调用锁相环，可以更改对应的时钟。(Lighting the LED pipelining lamp, the corresponding clock can be changed by calling the phase-locked loop.)

线性调频脉冲信号（Chirp信号）脉冲压缩实验，40MHz和400MHz时的chirp信号仿真以及STFT（短时傅里叶变换）。(Linear frequency modulated pulse compression experiment (Chirp signal), Chirp signal simulation at 40MHz and 400MHz, and STFT (short-time Fourier transform).)

In recent years, the number of portable mobile terminal users is increasing with improvement of the wireless communication environment. In addition, mobile multimedia services also bring the increase of wireless traffic and lack of spectrum resources. As a technique for efficient spectrum use, spectrum sharing receives much attention. It dynamically assigns a spectrum channel from a larger area network such as WiMAX to smaller area networks such as WiFi-based wireless LANs and achieves to increase the total wireless communication capacity of this area. In a case where all providers are cooperative, the spectrum sharing can be realized easily and improve user throughput in average. In another case where providers are not cooperative, some spectrum trading methods based on auction theory had been proposed.