chengxu

这是一个基于空时分组编码的MIMO_OFDM通信系统的仿真设计。 此系统包括QPSK调制解调，IFFT调制，空时编解码，基于训练符号的信道估计等通信模块。 ( This is a space-time block coding based on the MIMO_OFDM Communication System Simulation and Design. This system consists of QPSK modulation and demodulation, IFFT modulation, space-time coding and decoding, based on training symbols such as communication channel estimation module.)

主要用于matlab中的一些基本方法的介绍 以一些功能简介，适合初学matlab用户(used for matlab)

应用matlab产生用正弦信号调制的模拟PPM信号，并给出了功率谱密度(Matlab sinusoidal signal generated by application of the analog PPM signal modulation, and gives the power spectral density)

Matlab files of chapter 5 kalman filtering 3 edition of grewal

this code is LSB data hiding source book.

说明：  因此，本文在分析IEEE 802.16标准和WiMAX网络架构的基础上，研究基于 WiMAX技术宽带无线网络下的切换策略，以提高WiMAX系统的性能。 (the first stage. Based on the analysis of IEEE 802.16 standard and AMAX network architecture, the handover mechanism for broadband wireless network based on AMAX technology is studied in this thesis, for the purpose of improving the performance of WiMAX systems )

利用matlab编写三次样条插值法拟合函数的一般化程序(Cubic spline function using matlab fit function generalization programming)

(股市)非线性分析及预测工具箱，整合了原非线性时间序列分析工具箱程序，包含多个复杂度分析(如Higuchi法、计盒法)，相空间重构(Cao法、GP算法、互信息法)，最大李雅普诺夫指数判断(Wolf法、小数据法)和预测程序(lyp指数法、一次多步预测等)，程序执行效率高，实测可用。(Nonlinear analysis and prediction toolbox (stock market), the integration of the original nonlinear time series analysis toolbox program contains a number of complex analysis (Higuchi method, box-counting method), the phase space reconstruction (Cao Act, GP algorithm, mutual information method), the largest Lyapunov exponent judge the (Wolf Law, small data), and the prediction program (lyp index, a multi-step prediction), the high efficiency of the program, the measured available.)

偏最小二乘程序,快速拟合数据，等到一个比较理想的估计值。(Partial least squares procedure, fast fit the data, until a more satisfactory estimate.)

模糊自适应PID控制器（Simulink） 使用模糊控制器根据设定的模糊规则自适应调节PID控制器的三个参数(Fuzzy adaptive PID controller（Simulink） use fuzzy controller to tune three parameter of the PID controller through fuzzy rule )