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asd
航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控，其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency
)
- 2011-07-13 11:21:08下载
- 积分：1
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adhoc-network
对学习AD HOC网络很有帮助的一些电子文档，可以了解此网络的基本原理和一些协议之间的比较，以及改进。大家看看肯定会有所帮助哦(The study of electronic document helpful AD HOC network)
- 2012-03-10 20:31:57下载
- 积分：1
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NS-chinese-manual
NS中文手册，不用多说，有兴趣的朋友都知道。找了很久终于找到了，很不错，感谢作者辛苦努力和无私奉献！(NS Chinese manual, Needless to say, friends who are interested to know. Looking for a long time finally found, it is good to thank the author of hard work and selfless dedication!)
- 2008-03-23 23:33:04下载
- 积分：1
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MATLABsimulationincommunication
MATLAB仿真软件在通信系统仿真中的应用(MATLAB simulation software in the communication system simulation)
- 2009-11-24 06:55:18下载
- 积分：1
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ch03
杨建国老师的通讯原理课件，第三章模拟信号的调制与解调，主要讲述信号产生与调制，射频特性，解调，MSK、GMSK、PSK、QPSK、BPSK、QAM等原理(Yang Jianguo teacher communication principles of courseware, the third chapter of the analog signal modulation and demodulation, and focuses on the signal generation and modulation, the RF characteristics, demodulation, MSK, GMSK, PSK, QPSK, as BPSK, QAM and other principles of)
- 2012-06-12 10:45:39下载
- 积分：1
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polarization-knowledge
极化敏感阵列的学习笔记，有助于了解极化敏感阵列的相关知识(Study notes polarization sensitive array, helping to understand the polarization sensitive array of relevant knowledge)
- 2016-01-20 10:32:51下载
- 积分：1
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Communication-System-Simulation
《通信系统仿真原理与无线应用》MATLAB源代码，在pudn网上也看到有这个代码，但是那个不全，有好几章代码没有，这个完整版的。(Communication System Simulation principle and wireless applications. "MATLAB source code, in pudn online to see this code, but incomplete,
Several chapters code is not the full version.)
- 2012-02-18 15:15:58下载
- 积分：1
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Hetrogenous
Paper on hetrogenous network
- 2018-04-11 20:52:39下载
- 积分：1
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Spread-spectrum
This document describes about the digital modulation techniques especially about spread spectrum.
- 2012-07-06 15:46:04下载
- 积分：1
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TheResearchAndIPDesignOfSMBusBasedSmartBattery
本文研究了SMBus
规范，介绍了典型的基于片上系统（SoC）设计的知识产权核（IP）实现，采用自顶向下
(Top-down)的集成电路设计方法完成了设计，并架构了基于总线功能模型(BFM)的验证平台
完成功能仿真，顺利完成了逻辑综合和时序仿真。FPGA 验证和投片后测试均表明设计具有
良好的性能。(This paper studies the SMBus specification, based on the introduction of the typical system-on-chip (SoC) intellectual property core design (IP) implementation, using top-down (Top-down) of the integrated circuit design methods achieve a design and architecture based on the total Line functional model (BFM) achieve functional verification platform for simulation, successfully completed a logic synthesis and timing simulation. FPGA silicon validation and post-tests show that the design has good performance.)
- 2009-03-26 12:16:53下载
- 积分：1
