CosPhaseGrating

In March 2006 an IEEE task group was created to for incorporating mobile multihop relay capabilities in the mobile Wimax standard IEEE 802.16e. This group came up with an amendment to the 16e standard which is called 802.16j. This amendment is fully backward compatible. The addition of relay capability does not affect the design of MS unless MS has to exploit some optional features such as receive diversity. The BS needs to change slightly and is called MR-BS to differentiate it from BS with no MMR capabilities.

disizhangchegnxu程序集合是北京航空航天大学编写的(disizhangchegnxu collection procedure is to write the Beijing University of Aeronautics and Astronautics)

实现扩频里随机信号和伪码序列的产生，以及关于生成扩频序列的MATLAB程序，并用载波信号实现2PSK调制,在接收端用非相干积分实现捕获以及虚警概率的计算(Spread spectrum signal generated in the realization and pseudo random code sequence, and generate MATLAB program about spreading sequences and achieve 2PSK modulated carrier signal used to calculate the receiving end with a non-coherent integration to achieve capture and probability of false alarm)

说明：  实现一阶Keystone变换，包含三种方法，分别是DFT+IFFT方法，sinc插值方法和chirp-Z方法(Three algorithms for perform keystone transform, including DFT+IFFT, sinc interpolation and chirp-z transform.)

说明：  OFDM通信系统中的交织编码、解码程序，使用matlab语言(Interleaving OFDM communication system encoding and decoding procedures, the use of matlab language)

设计一个模糊控制器，通过调节阀门将水位稳定在固定点附近。(Design a fuzzy controller, water level by adjusting the valve will stabilize at a fixed point nearby.)

单神经元PID对二阶延迟系统的仿真程序。(keyword：single nuron、PID、MATLAB)

为sinudoidal模型的AIC阶估计.AIC信息准则即Akaike information criterion，是衡量统计模型拟合优良性的一种标准，又由于它为日本统计学家赤池弘次创立和发展的，因此又称赤池信息量准则。它建立在熵的概念基础上，可以权衡所估计模型的复杂度和此模型拟合数据的优良性。 在一般的情况下，AIC可以表示为： AIC=2k-2ln(L) 其中：k是参数的数量，L是似然函数。 假设条件是模型的误差服从独立正态分布。 让n为观察数，RSS为剩余平方和，那么AIC变为： AIC=2k+nln(RSS/n) 增加自由参数的数目提高了拟合的优良性，AIC鼓励数据拟合的优良性但是尽量避免出现过度拟合(Overfitting)的情况。所以优先考虑的模型应是AIC值最小的那一个。赤池信息准则的方法是寻找可以最好地解释数据但包含最少自由参数的模型。(AIC order estimation for sinudoidal model)

视频分析方法中的平滑伪Wigner-Ville分布等效于对WVD的结果在时域和频域分别进行一次平滑滤波，有效抑制交叉干扰。(Video analysis methods smoothed pseudo Wigner-Ville distribution is equivalent to the result of the WVD smoothing once were in the time domain and frequency domain, inhibit cross-interference.)

说明：  通过若干个例子实现newton hss算法，包括确定最优参数的脚本。(Newton HSS iteration method)