CLIPPING_OFDM

ofdm信道估计的程序源代码，使用matlab语言编写(ofdm channel estimation of the source code, the use of language matlab)

说明：  Euler解常微分方程,Taylor解常微分方程,追赶法求解三对角方程(Euler solutions ordinary differential equations, differential equations solution Taylor, catching up with the method three pairs Kok equation)

在机动目标跟踪中，机动目标模型是机动目标跟踪的基本要素之一，一般希望机动目标模型能准确表征目标机动时的各种运动状态。比较常用的模型有匀速运动(CV)模型、匀加速运动(CA) 模型、时间相关模型（Singer）和机动目标“当前”统计模型。上述模型均采用机动频率表征目标的机动情况。在应用当中，通常采用固定的机动频率，这就表示机动目标的机动时间是一定的，而实际上机动目标的机动时间是不断变化的，也就是说机动频率是不断变化的，采用固定机动频率必然会带来误差。采样周期在0.5—2S时，机动频率越小跟踪精度越高[1]，但机动频率仍然是固定值。本文提出的基于神经网络的机动频率自适应调整方法可以使机动频率随机动而变化，从而提高状态估计的准确性，提高跟踪精度。本文将小波神经网络用于机动目标跟踪中机动频率的自适应调整，该算法对机动目标“当前”统计模型中的机动频率进行实时修改, 从而自适应的改变机动频率,使跟踪算法与目标的真实状态更接近。该算法采用小波神经网络的离线训练，实时性好。(The maneuver of the maneuvering target is uncertain. The maneuvering frequency is constantly changeable, but traditionally it is beforehand determined as a constant based on the target state estimation in the state model of the maneuvering target. The maneuver of the maneuvering target makes the kinematics equation of the target model mismatch with the practical motion model and the tracking error will be increased. Based on the advantages of the self-learning, the rapid convergence rate and the nonlinear approximation ability of the wavelet neural network, it was put forward to be used in the field of target tracking in the paper. The new residual is used as the input of the wavelet neural network, the output of the network is used to adjust adaptively the maneuvering frequency of the CS model. The algorithm is more close to the real state of the target. The simulation results showed that tracking error can be reduced and the tracking accuracy can be improved.)

emd分解是对原始信号分解得到各个分量的过程，它的核心是通过找出信号的极大值和极小值点拟合出上下包络从而得到平均包络。(The emd decompose each component of the process of decomposition of the original signal, its core is by identifying the maximum and minimum points of the signal fitting upper and lower envelopes in order to get the average envelope.)

N个小球的电磁散射，只有偶极子点的相互作用(Scattering by N Small Spheres, dipole point interactions only)

知识进化多目标领域的一篇经典之作，已被同行广泛认同，相信给大家的学习和研究会带来帮组，欢迎下载！(Knowledge of a field of multi-objective evolutionary classic, has been widely recognized by his peers, I believe for everyone to learn and research will bring help group, welcome to download!)

基于BP神经网络的预测及故障诊断，并且与RBF神经网络算法进行对比(Prediction and fault diagnosis based on BP neural network and RBF neural network algorithm and compare)

曲面样条插值实现（没用householder变换，不稳定）(Surface Spline Interpolation (useless householder transformation, instability))

用matlab编的计算光子晶体投射系数的一个简单的程序，请结合自己的实际情况进行改动，解压后为.m文件(Series is calculated using matlab photonic crystal projection coefficients a simple program, combined with their own situation changes after decompression. M file)

matlab中仿真模拟leach算法，绘图结果正确(good leach)