SQP

基于OFDMA系统的多用户资源分配算法，论文配备MATLAB代码，入门的好教材。(— Orthogonal Frequency Division Multiple Access (OFDMA) basestations allow multiple users to transmit simultaneously on different subcarriers during the same symbol period. This paper considers basestation allocation of subcarriers and power to each user to maximize the sum of user data rates, subject to constraints on total power, bit error rate, and proportionality among user data rates. Previous allocation methods have been iterative nonlinear methods suitable for ofine optimization. In the special high subchannel SNR case, an iterative root-nding method has linear-time complexity in the number of users and N logN complexity in the number of subchannels. We propose a non-iterative method that is made possible by our relaxation of strict user rate proportionality constraints. Compared to the root-nding method, the proposed method waives the restriction of high subchannel SNR, has signicantly lower complexity, and in simulation, yields higher user data rates.)

digital modulation - QPSK

连续相位调制CPM的软输入软输出SISO解调(Continuous phase modulation CPM soft input soft output SISO demodulator)

适合初学小波变换的同学，小程序演示了怎样显示小波各级各频段(show the frequency of wavelet)

线性方程组，非线性方程组，最小二乘拟合等数值算法的matlab实现。(Linear equations, nonlinear equations, numerical algorithm such as least-squares fitting of the realization of matlab.)

用简单易行的风格，一开始介绍了MATLAB 基础，你将学习到如何绘制图象，求解代数方程及计算积分，也将学习到如何求解微分方程，求ODE 的数值解，使用特殊函数工作。 本书含有几百个例子及其详细解说过程，章末带有习题，书末还带最终测试题目，一句话，本书给予你的是MATLAB 精华.(Simple style , a start MATLAB basis , You will learn how to draw images, solving algebraic equations and calculate the integral , but also to learn Learning how to solve differential equations , and the ODE numerical solution to the use of special functions . The book contains hundreds of examples and a detailed explanation of the process , the end of the chapter with exercises, the end of the book With the final test subject , in a word , this book give you the MATLAB Digest )

光伏电池阵列输出功率受光照强度和温度变化的影响，因此最大功率点跟踪（MPPT）技术广泛应用于光伏系统中。在所有最大功率点(MPP)控制策略中，扰动观察（P&O）MPPT算法因易实现被广泛应用，然而它的缺点是在稳定工作状态下工作点通过MPP 时会导致能量振荡损耗，并且在光照强度或温度发生突变时表现较差的动态响应。在本文中，提出一种改进型变步长扰动观察MPPT 算法，此方法依据工作点动态调整步长变化，与传统固定步长方法比较，本文提出的方法能有效地提高MPPT 速度和转换效率，通过仿真和实验结果分析，验证了此改进算法的可行性。(PV array output power by light intensity and temperature changes, so the maximum power point tracking (MPPT) technology is widely used in photovoltaic systems. In all the maximum power point (MPP) control strategy, the perturbation and observation (P & O) MPPT algorithm because easy to implement is widely used, but its disadvantage is the steady-state operating point by the MPP causes energy oscillations loss, and in the light intensity or temperature mutated poor performance dynamic response. In this paper, we propose a modified variable step size perturbation and observation MPPT algorithm, this method is based on dynamically adjusting the operating point changes in steps, with the traditional fixed-step methods, the proposed method can effectively improve the speed and efficiency MPPT, The simulation and experimental results verify the feasibility of this algorithm.)

An Edge Guided Image Interpolation Algorithm via Directional Filtering and Data Fusion

MATLAB程序设计一些实例，附有源代码，可参考使用，减小开发量。(MATLAB programming some examples with the source code, refer to the use, reduce the development capacity.)

Monte Carlo Simulation and Finance,详细介绍了Monte Carlo Simulation在金融领域的应用(Monte Carlo Simulation and Finance, details the Monte Carlo Simulation in the financial sector)