imhist

BPSK、QPSK、16QAM、64QAM调制解调(BPSK、QPSK、16QAM、64QAM modulator/demodulator)

matlab工具书/学习资料。详细收录并讲解了matlab的图像命令。(matlab books/learning materials. Matlab included and explained in detail the image command.)

概率与计算课程中的一个作业，防止一个Las Vegas算法输出“？”并统计其期望的运行时间，有实验报告、源码(Modify the algorithm LV10 that the output “?” does not occur. Then, analyse the expected run times of your Las Vegas protocol with forbidden “?”. )

OFDM系统仿真，调制方式BPSK，前向纠错，运行无误(OFDM system simulation，BPSK，FEC)

4Cyclist problem simulation model Four cyclists are at the desert. Each of them starts from a different location and tries to reach the other ones. Cyclist 1 goes straight to cyclist 2, cyclist 2 straight towards cyclist 3 etc. such that finally the cyclist 4 goes straight towards cyclist 1. Form the equations, build a Simulink-model and find out the meeting point of the cyclists by simulating the system with the following initial values:

频谱细化程序，matlab的，学完动态信号分析的作业，华南理工大学研究生课程(Spectrum refinement program, matlab, completion of the job of the dynamic signal analyzer, South China University of Technology postgraduate courses)

a matlab code for bilinear zooming. by: d m

精通Ｍａｔｌａｂ编程(Proficient in Matlab programming)

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)

说明：  MidPoint 中点公式求取导数 ThreePoint 三点法求函数的导数 FivePoint 五点法求函数的导数 DiffBSample 三次样条法求函数的导数 SmartDF 自适应法求函数的导数 CISimpson 辛普森数值微分法法求函数的导数 Richason 理查森外推算法求函数的导数 ThreePoint2 三点法求函数的二阶导数 FourPoint2 四点法求函数的二阶导数 FivePoint2 五点法求函数的二阶导数 Diff2BSample 三次样条法求函数的二阶导数 (Interpolation function)