ofdm_ls_mmse_compare

一个在DOS下实现的利用串口的文件传输程序，因为用到了软中断可能在XP下不能正常使用。(One in use under DOS serial file transfer process, because the soft interrupt may be used in XP should not under normal use.)

说明：  已封装好C#调用JSON语句方法，dll文件(Encapsulated C# Call JSON Statement Method, DLL File)

通信系统的SystemView仿真，详细的说明了用SystemView这个软件做系统设计的步骤。(SystemView communication system simulation, a detailed description of the use of the software to do SystemView system design steps.)

设计一个巴特沃兹数字低通滤波器，其技术指标为：3dB带宽为0.2π，阻带截止频率为0.3π，通带纹波为1dB，阻带衰减大于30dB，采样间隔T=10ms。 1）采用冲激响应不变法； 2）采用双线性变换法设计； 3）采用FIR的窗函数（Hanning窗、Hamming窗或Blackman窗）设计。(A Butterworth digital low-pass filter is designed. Its technical specifications are: 3 dB bandwidth is 0.2 pi, stopband cut-off frequency is 0.3 pi, passband ripple is 1 dB, stopband attenuation is more than 30 dB, sampling interval T=10 Ms. 1) Impulse response invariance method is adopted. 2) Design by bilinear transformation method; 3) FIR window function (Hanning window, Hamming window or Blackman window) is used to design.)

巴特沃斯滤波器C语言实现,低通滤波器,IIR(Butterworth filter C language implementation, low pass filter, IIR)

说明：  一些时反的例程和其他代码，mat文件是信道信息(The Mat file is the channel information. There are some examples of the Time Reverse and communication system.)

仿真了不同距离下的多径信道衰落模型，包含大尺度衰落和小尺度衰落。(The multipath channel fading model at different distances is simulated, including large scale fading and small scale fading.)

一个sir建模的matlab程序。希望对大家有用(one sir modeling programm written by matlab, hope for everyone using)

IEEE TRANSACTIONS ON SIGNAL PROCESSING在定位与跟踪领域的经典文献“Source Localization Using TDOA and FDOA Measurements in the Presence of Receiver Location Errors: Analysis and Solution”的PDF文档，此文档的MATLAB程序同时上传，进行信号源被动定位与跟踪研究的同学可下载使用！(IEEE TRANSACTIONS ON SIGNAL PROCESSING positioning and tracking in the field of classical literature " Source Localization Using TDOA and FDOA Measurements in the Presence of Receiver Location Errors: Analysis and Solution" of the PDF document, this document also upload the MATLAB program, the source passive positioning and tracking of students can download!)

说明：  用于生成多用户的单通道的跳频信号的子函数(Frequency Hopping Signal for Generating Multi-user Single Channel)