makeLdpc

说明：  多项式曲线拟合其中, x, y为已知数据点向量, 分别表示横,纵坐标, m为拟合多项式的次数, 结果返回m次拟合多项式系数, 从高次到低次存放在向量p中. (Polynomial curve fitting where, x, y as the vector of known data points, respectively, horizontal and vertical coordinates, m is the number of polynomial fitting, the results of m-fit polynomial coefficients returned from higher to Low times stored in the vector p,.)

多用波束形成，性噪比、中心频率都可以修改(The use of beamforming, signal to noise ratio of the center frequency can be modified)

modeling induction motor. very easy to use

本文区别于其他传统的人口预测模型，深入分析了当前中国人口的基本情况，以及 最近几年中国人口的发展情况与趋势，针对中国人口基数大、男女比例不协调、乡村人 口城镇化加速、人口老龄化日益严重等显著特点，在各年龄段生育率短期内保持不变的 假设下，建立基本的人口转移回归模型，用于模拟预测短期内中国各类人口数量发展变 化。该模型预测结果显示，中国人口在未来十几年内增长一定幅度后开始下降；与此同 时，人口老龄化、男女比例失调等问题日益严重。该模型短期内的预测效果比较好。 为了使中国将来的人口发展健康、平衡，综合考虑中国以及欧洲一些发达国家和亚 洲一些实行计划生育较早的国家以前以及当前的一些情况，本文提出了修改计划生育政 策的建议。面对日益严重的老龄化现象，我们提出生育率应该参考老龄人口比例这一新 思想，并建立生育率与老龄人口比例的关系模型，用于长期人口的预测。预测结果显示 中国总人口在短期内持续上升，在2025 年到2040 年之间基本保持在14.6 亿的最大值， 然后开始缓慢下降。 两个模型的结果均显示，中国将会面临严重的老龄化和男女比例不协调两个问题。 最后我们提出了适当措施以缓和这两个问题带来的影响。(This is different from other traditional population projection model, in-depth analysis of the current basic situation of China s population, and In recent years the development of China s population and the trend for China s huge population, gender disharmony, rural people I accelerated urbanization, the growing aging population and other significant features in the short term fertility of all ages remain unchanged Assumption, the establishment of basic population transfer regression model, to simulate and predict the short term development of China s various types of population change Of. The predicted results show that China s population growth in the next decade began to decrease after a certain extent and the same When an aging population, gender imbalance and other growing problem. The model predicted the short-term results were better. To make the development of China s future population health, balance, considering China and some developed countries in Europe and A)

本程序通过matlab实现图片的RGB域到LAB域的转换，本程序包含测试程序，可以完全跑通，敬请放心使用。(This procedure achieved by matlab image RGB domain to the domain of LAB, this program includes testing procedures, can be completely run through, please rest assured that use.)

三相滞环控制有源电力滤波器。采用三相PWM整流器拓扑，基于瞬时功率理论的滞环控制(Closed-loop control of three-phase active power filter, three-phase PWM rectifier weapon as topology, instantaneous power theory based hysteresis control.)

matlab样条工具箱介绍包括： 三次插值样条函数 PP形式的样条函数的构造及操作 B形式样条函数的构造和应用 其他函数 举例(introduction matlab spline toolbox include: cubic interpolation spline function forms of PP-spline function and operation of the structure form of B-spline function of the structure and application of other functions, for example)

说明：  802.11无线网络通信中基本CSMA/CA基本方式和RTS/CTS的仿真实现比较。(802.11 wireless network communications in the basic CSMA/CA basic mode and RTS/CTS comparison of the simulation.)

ECG signal processing in matlab

介绍了利用matlab来计算衍射的相关内容，其中噢乖包括单缝，双缝，光栅的衍射的衍射的计算。(this article give an introduction to calculate the diffraction. it will be usefull for learn diffraction.)