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IMT-DS FDD(WCDMA)系统无线接口层2技术规范： 无线链路控制（RLC）协议 IMT-DS FDD(WCDMA) System Radio Interface Layer2 Technical Specification: Radio Link Control(RLC) Protocol (IMT-DS FDD (WCDMA) radio interface layer 2 system specification: Radio Link Control (RLC) protocol IMT-DS FDD (WCDMA) System Radio Interface Layer2 Technical Specification: Radio Link Control (RLC) Protocol)

说明：  ：该文首先研究了单认知用户能量检测算法的检测性能和检测灵敏度与检测时长和噪声短时间内平均功率波 动性之间的关系，得出检测性能和检测灵敏度随噪声短时间内平均功率波动性的增大而急剧下降的结论，在低信噪 比时尤为明显；针对检测性能和检测灵敏度随噪声短时间内平均功率波动性的增大而急剧下降，提出了基于多用户 协同能量检测算法。仿真表明，在低信噪比环境下，即使噪声短时间内的平均功率存在较大的波动性，只要适当地 增加协同检测的用户数，仍可获得较为准确的检测性能。(In this paper, detection performance and detection sensitivity with detection duration and noise average power fluctuation in short time is investigated firstly. Performance accuracy and detection sensitivity drop quickly with noise average power fluctuation increasing and it is worse when signal-to-noise ratio lower. Considering the characteristic, a novel new energy detection algorithm based on cooperative is presented. Simulations show that the proposed scheme improves antagonism of noise average power fluctuation in short time and gets a good detection performance as long as increasing the number of cooperative detection users.)

标准线阵的频率波数响应、波束图 对于N=11的标准线阵： 1、画出频率响应波束图，并标出可视区间； 2、画出极坐标下的波束图； 3、分析栅瓣问题。(Standard linear frequency response, the beam pattern)

高斯消去法求解线性方程组 输入变量为一个n阶非奇异方阵A，和n维列向量b，输出的结果为线性方程组Ax=b的解(Gaussian elimination method for solving linear equations)

功率谱估计及其MATLAB仿真.经典功率谱估计是将数据工作区外的未知数据假设为零,相当于数据加窗。经典功率谱估计方法分为:相关函数法(BT法)、周期图法以及两种改进的周期图估计法即平均周期图法和平滑平均周期图法,其中周期图法应用较多,具有代表性。(The power spectrum estimation and simulation of MATLAB. Classic power spectrum estimation is unknown data in the data outside the workspace is assumed to be zero, equivalent to the data window. Classic power spectrum estimation method is divided into: the correlation function method (BT Act), the periodogram and two improved cycle diagram estimation method the average periodogram and smoothed average periodogram, which the periodogram method used more often, on behalf of sex.)

一维抛物方程差分格式，数值分析作业，（向后的方法）(One-dimensional difference scheme for parabolic equations)

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(Cochlear substantially equivalent to a filter set, cochlear filter is used on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

最小二乘法仿真，系统辨识算法，经典数学算法(Least squares simulation)

ＬＭＳ自适应滤波实现信号消噪的ＭＡＴＬＡＢ源码程序(LMS adaptive filter signal denoising MATLAB source programs)

Dynamic Modeling and Simulation of a Small Wind-Fuel Cell Hybrid Energy System