登录
首页 » LabView » asd

asd

于 2011-07-13 发布 文件大小:6437KB
0 505
下载积分: 1 下载次数: 8

代码说明:

  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 )

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • DOA Estimation
    There are some trials for DOA estimation by applying the wavelet transform method into several sub bands MUSIC and CYCLIC MUSIC scenarios
    2020-11-17 16:19:39下载
    积分:1
  • VoIP
    这个是华为的VoIP文档,讲述清晰,值得阅读!(This is Huawei' s VoIP documents, about clarity, it is worth reading!)
    2009-12-06 16:01:08下载
    积分:1
  • MerfrfrgePDFs_15
    cooperative relay communication ieee
    2009-02-14 18:56:48下载
    积分:1
  • 3G
    说明:  3G方面的论文,TD-CDMA WCDMA(Papers on 3G, TD-CDMA WCDMA)
    2011-05-05 10:55:12下载
    积分:1
  • 公交非接触IC卡读写器的应用设计
    公交非接触IC卡读写器的应用设计采用PHILIPS公司的Mifare卡作IC卡,设计以射频技术为核心,以单片机为控制器的IC卡读写器在公交自动收费系统中的应用。制作的IC卡读写器可以实现制卡、售卡、自动收费等功能,具有安全、实用、方便、快捷、可靠性高的特点,解决了城市公共交通服务行业既频繁又琐碎的收费管理问题,有广泛的应用前景。(Bus non-contact IC card reader applications designed using the Philips Mifare cards for IC cards, designed to RF technology as the core, microprocessor controller IC card reader automatically charges the transit system applications. The production of IC card reader card system can be achieved, A file, automatic charges and other functions, is safe, practical and convenient, fast and high reliability features to solve the urban public transport sector is also frequent charges trivial issues, a broad range of applications.)
    2005-08-12 10:21:07下载
    积分:1
  • starbucks
    it is a discription of starbucks supplychain managment system
    2013-01-18 23:52:04下载
    积分:1
  • adaptive-signal-process
    自适应信号处理(何振亚)(科学出版社出版)(有关自适应信号处理的书籍)(Adaptive signal processing (Zhenya) (Science Press) (for adaptive signal processing books))
    2011-08-17 15:01:09下载
    积分:1
  • ethernet_mac-master
    ethernet mac vhdl verilog basic
    2019-03-30 15:47:25下载
    积分:1
  • 57
    Underwater optical wireless communication network
    2013-08-09 23:13:22下载
    积分:1
  • The-Modulo-Lattice-Channel-The-Key-Feature-in-Pre
    the pdf entitled The Modulo Lattice Channel The Key Feature in Precoding is attached
    2017-05-13 17:17:17下载
    积分:1
  • 696516资源总数
  • 106914会员总数
  • 0今日下载