hbc_qpsk_rayleigh

Hopfield recognizig pictures

说明：  matlab教程，以ppt的形式，比较简单、实例很充分. 初学者可以看看。(matlab tutorial to ppt the form of relatively simple, very good examples. beginner can look at.)

频域内低通滤波实现图像平滑，程序原代码来自书籍，《计算机图像处理与识别技术》，作者王耀南等(frequency low pass filter)

基于RELAX算法的雷达目标识别。适合新手练习(Radar target recognition algorithm based and RELAX)

说明：  用ADD_IN实现VC++和Matlab的混合编程（文档部分）(with ADD_IN VC and Matlab mixed programming (documentation))

线性调频的 matlab程序，其中包括时域 分析，频域分析，模糊函数分析。(LFM matlab Including time-domain analysis, frequency domain analysis, ambiguity function analysis.)

计算源信号和噪音之间的频谱差，用于噪音估计等。(Calculates the average log-spectral distance between CLEAN and NOISY signals)

The 802.11 standard specifies a carrier sense multiple access with collision avoidance(CSMA/CA) protocol. In this protocol, when a node receives a packet to be transmitted, it first listens to ensure no other node is transmitting. If the channel is clear, it then transmits the packet. Otherwise, it chooses a random "backoff factor" which determines the amount of time the node must wait until it is allowed to transmit its packet. During periods in which the channel is clear, the transmitting node decrements its backoff counter.

无刷直流电动机矢量控制模型,控制IGBT而改变输入的.(The vector control model of Brushless DC Motor. Brushless DC Motor drived by IGBT)

计算两个信号的功率谱密度，通过两个信号的谱相关系数决定频点是否参与叠加计算，以控制功率谱密度质量。(Calculation of the two signal power spectral density, spectral signals through two related factors involved in the decision whether or not frequency superposition calculation, in order to control the quality of the power spectral density.)