procedure

一段matlab的程序，供大家交流，学习数学应用软件是一件有益处的事情！(matlab)

MATLABä -the tremendously popular computation, numerical analysis, signal processing, data analysis, and graphical software package-allows virtually every scientist and engineer to make better and faster progress. As MATLAB s world-wide sales approach a half-million with an estimated four million users, it becomes a near necessity that professionals and students have a level of competence in its use. Until now, however, there has been no book that quickly and effectively introduces MATLAB s capabilities to new users and assists those with more experience down the path toward increasingly sophisticated work. Basics of MATLAB and Beyond is just such a book. Its hands-on, tutorial approach gently takes new users by the hand and leads them to competence in all the fundamentals of MATLAB. Then, with equal effectiveness, it covers the advanced topics that lead to full, creative exploitation of MATLAB s awesome power.

OFDM很容易在具有时延扩展或等效频率选择性的信道上使用。 频率选择性信道的特征在于延迟扩展或相干带宽，其测量频率中的信道去相关。 相干带宽与均方根（RMS）时延扩展成反比。 通过选择与信道相干带宽相关的子载波间隔，OFDM可以用于将频率选择性信道转换成频率平坦子信道的并行集合。 适合于平坦衰落信道的技术可以直接应用。(OFDM is simple to use on channels that exhibit time delay spread or, equivalently, frequency selectivity. Frequency selective channels are characterized by either delay spread or coherence bandwidth which measures the channel decorrelation in frequency. The coherence bandwidth is inversely proportional to the root-mean-square (rms) delay spread. By choosing the sub-carrier spacing properly in relation to the channel coherence bandwidth, OFDM can be used to convert a frequency selective channel into a parallel collection of frequency flat subchannels. Techniques that are appropriate for flat fading channels can then be applied in a straight forward fashion.)

基于MIMO-OFDM最优导频设计和带阻滤波算法的仿真程序，对信道估计研究有一定帮助(Optimal pilot design and band-stop filter algorithm simulation program based on MIMO-OFDM channel estimation study)

非线性拟合，可以根据已经数据，计算出对应的数据(Nonlinear fitting, can have data to calculate the corresponding data)

利用ode45求解三自由度状态方程常微分方程(Solving ordinary differential equations of three degree of freedom equation of state by using ode45)

通信中的tcm&16qam体制的研究，matlab源程序代码，采用viterbi应判决译码(Communication tcm & 16qam study of the structure, matlab source code, used to be decision viterbi decoding)

感知准则函数，可以把前三组数据很好的分离出来(Perceptron criterion algorithm experiment)

粒子群算法，也称粒子群优化算法（Particle Swarm Optimization），缩写为 PSO， 是近年来发展起来的一种新的进化算法(Evolutionary Algorithm - EA)。(For each particle ____Initialize particle END Do ____For each particle ________Calculate fitness value ________If the fitness value is better than the best fitness value (pBest) in history ____________set current value as the new pBest ____End ____Choose the particle with the best fitness value of all the particles as the gBest ____For each particle ________Calculate particle velocity according equation (a) ________Update particle position according equation (b) ____End)

MATLAB教学代码，包括37个短代码M文件，文字包含执行基本线性代数计算MATLAB命令文件等。(The MATLAB Teaching Codes consist of 37 short, text files containing MATLAB commands for performing basic linear algebra computations.)