graymapping

logistic映射分岔图的四种实现方法(logistic map bifurcation diagram of the four implementations)

说明：  详细说明了pi/4 DQPSK 调制、解调，RRC 匹配滤波器设计， BER 蒙特卡洛仿真，rayleigh衰落下的系统仿真。 文档中附有各个模块的Matlab code。(Detailed description of pi/4 DQPSK modulation, demodulation, RRC matched filter design, BER Monte Carlo simulation, rayleigh fading of system simulation. Document attached to each module of the Matlab code.)

Pegasos-原始估计分梯度求解支持向量机“ 是一种原始的优化支持向量机分类算法解决问题。 请参阅进一步的参考。("Pegasos-Primal Estimated sub-Gradient SOlver for SVM" is a primal optimization problem solver in Support Vector Machine classification algorithm. See the paper for further reference.)

适用于水下信号分析的空间平滑MUSIC算法源代码，对学习空间谱MUSIC算法的初学者有一定的参考作用

 利用fft()进行快速傅立叶变换，得到频谱，画出正弦函数及其频谱  找出频谱中使得Y轴取最大值时的估计频率记为ft  加入白噪声，绘出信噪比和均方误差的关系曲线 ( using fft () for fast Fourier transformation, spectrum, to draw the sine function and its spectrum  find the spectrum makes the Y-axis maximum value when the estimated frequency is denoted by ft  adding white noise, SNR plot and mean square error curve)

非线性优化-matlab函数库-optimset.zip(Nonlinear optimization-matlab function library-optimset)

说明：  卡尔曼滤波基础程序，关于运动模型的跟踪，很基础，适合初学者。(Kalman filter basic program.)

matlab程序，用于画非双力偶机制，从完整的地震矩张量在较低的半球等于的投影。阴影部分表示方向积极的P波极性。(Program plots non-double-couple mechanisms from full seismic moment tensors in the lower-hemisphere equal are projection. Shadow area denotes directions of positive P-wave polarities.)

说明：  (1)按残差方差定阶，(2) AIC准则，(3)按残差白色定阶，(4)零点—极点消去检验定阶，(5)利用行列式比定阶，(6)利用Hankel矩阵定阶。课件为学习系统模型定阶的方法，希望对大家有用。((1) the residual variance given order, (2) the AIC criteria, (3) order determination of residual white, (4) Zero- Pole to eliminate test order determination, (5) use of a determinant than the fixed-order, (6)Hankel matrix order determination. Courseware for learning the method of the system model order and the hope that useful.)

根据LTE上行SIMO接收机特点，对MMSERISIC均衡器进行简化修改，得到MMSEFDE均衡器,该均衡器所有步骤全在频域进行，大大降低了均衡算法的复杂度。(LTE uplink SIMO receiver according to the characteristics of the MMSE-RISIC equalizer to simplify modification, by MMSE-FDE equalizer, the equalizer all the steps in full in the frequency domain, greatly reduces the complexity of balancing algorithm.)