登录
首页 » PPT » PPT

PPT

于 2011-12-15 发布 文件大小:9935KB
0 389
下载积分: 1 下载次数: 9

代码说明:

  扩频通信,即扩展频谱通信(Spread Spectrum Communication),它与光纤通信、卫星通信,一同被誉为进入信息时代的三大高技术通信传输方式。

文件列表:

扩频
....\扩频1.ppt,1195008,2008-11-16
....\扩频10.ppt,460288,2008-11-16
....\扩频11.ppt,357888,2008-11-16
....\扩频12.ppt,648192,2008-11-16
....\扩频13.ppt,179200,2008-11-16
....\扩频14.ppt,309248,2008-11-16
....\扩频15.ppt,238080,2008-11-16
....\扩频2.ppt,497152,2008-11-16
....\扩频3.ppt,318976,2008-11-16
....\扩频4.ppt,1250304,2008-11-16
....\扩频5.ppt,974848,2008-11-16
....\扩频6.ppt,755200,2008-11-16
....\扩频7.ppt,219648,2008-11-16
....\扩频8.ppt,407040,2008-11-16
....\扩频9.ppt,522752,2008-11-16
....\扩频通信(1).ppt,1402880,2008-11-16
....\扩频通信(2)n.ppt,3286016,2008-11-16
....\扩频通信(3)n1.ppt,1176064,2008-11-16
....\扩频通信(4).ppt,1201152,2008-11-16

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

  • zhushui
    注水算法,经典注水算法在MIMO自适应资源分配中功率分配的最优算法(water filling algorithm)
    2018-04-15 19:55:58下载
    积分:1
  • 一种基于高阶累积量的数字调相信号识别方法
    对当前通信信号中常用的数字调相信号BPSK、QPSK、1/4一QPSK、8PSK的调制识别问题,提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别,首先利用信号的四阶累积量特征对BPSK、QPSK和{1/4一QPSK、8PSK}信号进行识别,然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性,并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)
    2020-06-21 09:40:02下载
    积分:1
  • pcma资料1
    说明:  这是最新的卫星通信基础理论的Matlab仿真实现,pcma以及信号衰减和延迟的仿真。尽管不是我本人原创,但比较都经典。文件为*.m格式 (This is the latest in satellite communications theoretical basis Matlab Simulation, pcma and signal attenuation and delay in the simulation. Although it was not my original, but more are classics. M*. document format)
    2005-12-01 15:47:31下载
    积分:1
  • Linux_ip
    详细的讲述了linux的ip/tcp通信部分的协议栈,对开发很有帮助(Linux detail of the ip/tcp communication part of the protocol stack, on the development of useful)
    2009-04-06 01:45:51下载
    积分:1
  • LTE
    一本介绍第四代移动通信LTE的英文书籍,详细介绍了从发送端到信道到接收端的原理及实现。(One introduces fourth-generation LTE mobile communication in English books, details from the sender to the receiver channel to the principles and implementation.)
    2011-06-22 21:22:23下载
    积分:1
  • MasterProtocol
    Micro SCADA setting for iec60870-5-101
    2010-01-03 22:29:47下载
    积分:1
  • 2
    说明:  本文比较了宽带传输方案中SC_FDE系统与OFDM系统的性能(This article compares the broadband transmission program SC_FDE system and OFDM system performance)
    2008-07-31 15:53:16下载
    积分:1
  • jn877
    语音信号的采集与处理,数字信号处理课设,能量谱分析计算,小波包分析提取振动信号中的特征频率。( Acquisition and Processing of the speech signal, digital signal processing class-based, Energy spectrum analysis and calculation, Wavelet packet analysis to extract vibration signal characteristic frequency.)
    2017-05-12 19:12:23下载
    积分:1
  • Rappaport_WirelessCommunicationTechnologies
    Rappaport_Wireless Communication Technologies Text Book Rappaport_Wireless Communication Technologies Text Book
    2009-10-05 20:48:42下载
    积分:1
  • cyclostationary_dec
    认知无线电中基于BPSK循环自相关函数的信号检测,时域上的经典算法,许多论文引用的方法。(signal dection based on cyclostationary of BPSK in Congnitive Radio)
    2011-08-04 20:46:03下载
    积分:1
  • 696516资源总数
  • 106914会员总数
  • 0今日下载