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关于联合信源信道编码的文章，来自IEEE，对于JSCC的研究很有参考价值(On the joint source-channel coding of the article, from IEEE, for the study of JSCC valuable)

6678的网口程序 已经调试成功了 适用于6678开发板(6678 NDK net project GE ndk me let net project GE ndk me let project GE ndk me let)

Performace analysis of Zero Forcing detection in (2,2) MIMO system using 4 QAM modulation in Rayleigh Flat Fading Channel

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：  2. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。 (On the wireless channel of the Doppler spectrum, please answer the following questions: (1) In some radio channels, the Doppler frequency shift will cause the output signal of the wireless channel aliasing. Please describe the aliasing produced a variety of reasons (2) wireless channel in the Doppler spectrum has a classical spectrum (classic spectrum), please explain the mechanism of produce such spectral shape (3), please use the Simulink tool to write code ( S-Function mode), resulting in a single-path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And requested the answer: that they used computer-generated classical spectrum is the right possible way.)

LFM线性调频波的MATLAB仿真 利用matlab软件设计匹配滤波器。具体包括： 1）：阐述脉冲压缩（匹配滤波）的基本原理； 2）：输入信号为线性调频信号，存在的噪声信号为白噪声； 3）：通过脉冲压缩处理，讨论输出信噪比的改善。 (The the LFM chirp wave MATLAB simulation using matlab software design matched filter. Specifically including: 1): elaborated pulse compression (the basic principle of the matched filter) 2): the input signal is a chirp signal, the noise present in the signal is white noise 3): by a pulse compression processing discussed output SNR improved.)

BPSK仿真程序，简短有效，误码率分析，经典，快速(BPSK Simulation)

c#写的opc客户端，调用OpcDaNet.dll(opc client c# to write, call OpcDaNet.dll)

说明：  实现LDPC信道码的仿真，已在大型软件开发项目中实用(LDPC code and decode matlab)

使用cordic算法，基于verilog实现的atan功能，经过仿真验证，适宜工程使用。(ATAN,implemented with cordic.)