vhdl按键检测

说明：  this is official usb2.0 protocol

一个BICM系统的通信过程的方针，包括transmission,constellation,demodulation(a simulation of the communication processing of BICM system, include transmission, constellation, demodulation)

说明：  这是射线信道模型的代码。里面有多个m文件(This is the code for the ray channel model. There are multiple M files in it.)

卷积码的Viterbi译码算法仿真程序 要求：递归卷积码，归零处理(Convolutional Codes Viterbi decoding algorithm simulation program requirements : recursive convolutional codes and zeroing treatment)

说明：  雷达动目标检测仿真，含脉冲压缩，mtd处理等(Radar moving target detection simulation, including pulse compression, mtd processing, etc.)

UR旋转矢量转化，转化为RPY坐标，更加适合编程，非常靠谱(UR Rotation Vector Conversion)

说明：  Millimeter-wave Beamforming and Phased Arrays

基于RSSI测距的等边三角形定位算法,对研究无线传感器网络定位算法十分有用(RSSI-based location of an equilateral triangle positioning algorithm, the study of wireless sensor network localization algorithm is very useful)

一个波束形成的例子，比较了在瑞利信道中使用波束成形和不使用波束成形的误码率。(An example of beamforming is made to compare beamforming and without beamforming bit error rate in Rayleigh channel.)

空域零陷，首先用doa技术估计直达波方向，然后置零，用于直达波消除。(In spatial nulling, DOA technique is used to estimate the direction of direct wave, and then zeroing is used to eliminate direct wave.)