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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
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- 2011-07-13 11:21:08下载
- 积分：1
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CBuilder-JoyStick
在CBuilder中如何控制游戏手柄，对手柄编程(How to control the game in the CBuilder handle, to handle programming)
- 2020-12-03 17:09:25下载
- 积分：1
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introductionToTelephonesAndTelephoneSystems
Provides telephone system managers, telecommunications sales professionals, and students with nontechnical, easy-to-understand explanations of the major aspects of today s telecommunications systems. DLC: Telephone.
- 2012-02-08 16:47:31下载
- 积分：1
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Chapter-6
INDUSTRIAL CONTROL
(A B.Sc. Course)
- 2014-07-04 22:56:31下载
- 积分：1
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Coding-for-Optical-Channels
光通信领域编码书籍，业界经典！包含信道编码、TURBO均衡、光通信信道容量等章节的内容。(Coding books in the field of optical communication, the industry classic! Includes channel coding, turbo equalization, optical communication channel capacity, and other contents of the chapters.)
- 2012-08-08 14:47:33下载
- 积分：1
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SeaSon_from_HIT
SeaSon from DB-LAB of HIT
介绍的方法是以在cygwin中安装gdb为例说明。(SeaSon from DB-LAB of HIT is based on the method described to install gdb on cygwin an example.)
- 2010-11-04 16:31:49下载
- 积分：1
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sdprof
TM470ARM系列开发文档，很多都不没有用过TI的arm,实际上用起来非常不错的一款芯片!(TM470ARM series of development documents, are not never used TI)
- 2008-05-29 15:26:54下载
- 积分：1
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cdlab
this file talk about network
- 2012-10-13 08:30:27下载
- 积分：1
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08013826
Power Allocation for Underlay Device-to-Device
Communication over Multiple Channels
- 2017-12-20 18:04:50下载
- 积分：1
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4
说明： document qpsk vhdl code
- 2018-01-06 09:27:04下载
- 积分：1
