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LDPC_precode
说明: LDPC 预编码,用于构造Raptor码(LDPC Precodes, Used to construct Raptor codes )
- 2011-03-22 22:17:57下载
- 积分:1
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EMD
基于MATLAB的时域采样以及频谱分析,对初学者很有用(MATLAB-based time domain sampling and spectral analysis, is useful for beginners)
- 2010-05-10 20:22:04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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7941969VCandMatlab
一份用matlab7.0编写的mc算例,希望有大的帮助(Prepared using a matlab7.0 example mc, I hope there is a big help)
- 2009-06-23 15:41:38下载
- 积分:1
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Fuzzy-PID-Controller-Design
模糊自整定PID控制器设计。
本资料含有详细的PID控制器算法M文件、Simulink模型搭建、模糊控制器设计以及相应的技术文档分析。相信对您一定很有帮助(Fuzzy self-tuning PID controller design. This information contains details of the PID controller algorithm M files, Simulink models to build, fuzzy controller design and analysis of relevant technical documentation. I believe you must be helpful)
- 2021-04-22 11:18:48下载
- 积分:1
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thuan
simulation and software radio
- 2013-03-04 15:19:20下载
- 积分:1
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symmetry-of-digital-signals
The following attachment contains codes in Matlab for digital signal processing. In the file codes is to analyze the symmetry of digital signals
- 2015-03-03 11:10:14下载
- 积分:1
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fingfiu_v60
算法优化非常好,几乎没有循环,音频信号通过LM386放大,真的是一个好程序。( Algorithm optimization is very good, almost no circulation, LM386 audio signal amplification, Really is a good program.)
- 2016-10-07 18:59:42下载
- 积分:1
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superGMSK_matlab
GMSK调制 实现了毕业设计要求的GMSK的基本功能 其中包括simulink建模(GMSK modulation to achieve the design requirements of the graduation of the basic functions of GMSK including simulink modeling)
- 2008-05-27 01:19:12下载
- 积分:1
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802.11a_OFDM_MATLABcode
OFDM收发机matlab仿真代码,比较全面,包括编解码调制解调,信道估计等(OFDM transceiver matlab simulation code)
- 2009-12-17 13:44:03下载
- 积分:1