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Ultrahigh-Speed-OTDM-Transmission
文章涉及OTDM系统的实现，对研究此方向的同学有一定帮助(OTDM systems involved in the realization of the article, students in this direction of research will definitely help)
- 2011-05-09 15:23:46下载
- 积分：1
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MyTwainScan
因为TWAIN的协议比较复杂,该程序,为你展示了TWAIN的使用(because the agreement is more complicated, the procedures for the display you use the TWAIN)
- 2007-06-05 16:42:08下载
- 积分：1
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ZTEWinCE_V1_2
说明： ZTEWelink Wireless Module Driver User Guide for WinCE-V1.2
- 2019-01-15 09:29:45下载
- 积分：1
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PPT
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。
- 2011-12-15 20:30:31下载
- 积分：1
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CSE3213_13_RandomAccess_2_F2010.pdf
csma tutorial for begginers with graphics explantaion
- 2017-10-10 09:00:09下载
- 积分：1
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卫星通信中数字调相信号调制方式识别方法研究
说明： 针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)
- 2020-06-21 09:20:02下载
- 积分：1
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CPP-The-Complete-Reference--4th-Edition
A good book for C++ for beginners
- 2013-03-28 14:18:29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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Radio-Resource-Management-and-Interference-Analys
Radio Resource Management and Interference Analysis
- 2011-11-29 02:30:42下载
- 积分：1
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4
说明： ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2
种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本
思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列
的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods
。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency
ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits．
Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix—
based algorithm has less complexity and less precision。and that the training sequence—based algorithm
has better estimation performance at the cost of transmission efficiency．)
- 2010-05-18 18:34:44下载
- 积分：1
