np-csma-protocol

this code discribe the method related to nearest neighbour

In computer science and information theory, Huffman coding is an entropy encoding algorithm used for lossless data compression. The term refers to the use of a variable-length code table for encoding a source symbol (such as a character in a file) where the variable-length code table has been derived in a particular way based on the estimated probability of occurrence for each possible value of the source symbol. It was developed by David A. Huffman while he was a Ph.D. student at MIT, and published in the 1952 paper "A Method for the Construction of Minimum-Redundancy Codes".

this program can simulate DBR OLED. structure of OLED is three DBR layer-anode-two grganic layer-cathode. with this program, ueser can optimize the thickness of DBR layer

pca和kpca程序，对大家有很大的帮助，系统辨识和故障识别，很有用的，谢谢(Pca and kpca program, to all have a big help, system identification and fault recognition, very useful, thank you )

matlab环境下高斯信道中采用BPSK调制的误码率仿真。(Matlab environment Gaussian channel BPSK modulation BER simulation)

无数直流电机无位置传感器速度控制。利用电机运行时产生的反电动势估算转子位置。(Sensorless speed control of numerous DC motors.The rotor position is estimated by the back electromotive force generated during the motor operation.)

PSO聚类算法使用的数据是我们归一化后的数据，利用该数据求总的粒子数m,设置聚类数c（c=4,这个可以确定的），随机选择聚类中心并赋值给各个粒子，随机产生粒子的速度；(PSO clustering algorithm using data owned by a data after the data requirements to the total number of particles in m, set the number of clusters c (c = 4, this can be determined), the random selection of cluster centers and assigned to the each particle velocity of the particles, randomly generated )

主成分分析的matlab源代码，很有帮助，我已经用过好多次(principal component analysis)

说明：  基于Reed_Solomon算法的DataMatrix条码纠错码的研究基于Reed_Solomon算法的DataMatrix条码纠错码的研究(DataMatrix bar code based on Reed_Solomon algorithm of error-correcting codes DataMatrix bar code based Reed_Solomon algorithm of error-correcting codes)

说明：  总体最小二乘法的ESPRIT方法，这种算法的估计精度明显好于原来的ESPRIT算法。可以很好的估计出信号的角度。仿真中用的是均匀阵列。(Total least squares method of the ESPRIT method, the algorithm of the estimation accuracy significantly better than the original ESPRIT algorithm. Can be a very good signal to estimate the angle. Simulation using the uniform array.)