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OFDM_sync
说明: 一个基本的OFDM系统同步的仿真程序,包括时间同步和频率同步(A basic OFDM system simulation synchronization procedures, including time synchronization and frequency synchronization)
- 2010-04-05 11:01:17下载
- 积分:1
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eryuan1
利用奈曼皮尔逊方法设计的最佳信号接收机得matlab仿的
- 2013-01-14 11:55:51下载
- 积分:1
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makeVRMLfile
this code is use do create 3d structure of 3d object
- 2013-10-04 19:06:28下载
- 积分:1
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renkoumoxing
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)
- 2010-05-13 11:54:40下载
- 积分:1
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24-papers-of-matlab
说明: 24篇matlab论文,matlab数据文件输入输出,用户界面编程,以及实例论文(24 papers matlab, matlab data file input and output, user interface programming, and example papers)
- 2011-03-01 15:25:53下载
- 积分:1
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program
输入信号为正弦波加白噪声,分别用lms,lrs,维纳算法,滤出白噪声中的正弦波。(The lms,lrs filter。)
- 2012-04-12 18:15:33下载
- 积分:1
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maichongyasuo
脉冲压缩源代码 使用的是匹配滤波的方法 sar成像初学者看看(Pulse compression source code using a matched filter method sar imaging beginners look)
- 2014-11-04 22:39:45下载
- 积分:1
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matlab-R2012a-Parametricstatistics
matlab R2012a源代码(正太分解法计算均值和方差、图方法正太检验、M稳健回归)。((calculated the mean and variance diagram method, inspection, teenage boy M robust regression teenage boy decomposition method). .)
- 2014-11-27 08:28:16下载
- 积分:1
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wj
说明: 利用matlab编写的小波分解分频和除躁程序,分为高低频率,并除去噪声,达到较好的效果。(Prepared using matlab wavelet decomposition impatient frequency and in addition to procedures, divided into high and low frequency, and to remove noise, to achieve good results.)
- 2008-03-04 15:36:02下载
- 积分:1
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dhoib
元胞自动机程序模型,用来研究和分析随时间节点变化,元宝状态的程序!(cells automatic,)
- 2013-11-16 21:49:04下载
- 积分:1