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time_frequency
这是一篇现代通信原理课程的作业报告.题目为几种时频分析方法比较及应用.详细介绍了短时傅里叶变换、小波变换、魏格纳—威利分布和Cohen类时频分布这4种典型时频分析方法,并作了比较(This is a modern communication Principle operating report. Entitled Comparison of several time-frequency analysis and 应用. 详细 Jieshao the short time Fourier transform, wavelet transform, Wigner- Willie distribution and frequency distribution of Cohen Lei This four kinds of typical time-frequency analysis method, and compared)
- 2010-07-12 22:12:25下载
- 积分：1
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ts170
可以得到很精确的幅值、频率、相位估计，基于K均值的PSO聚类算法,光纤陀螺输出误差的allan方差分析。( You can get a very accurate amplitude, frequency, phase estimation, K-means clustering algorithm based on the PSO, allan FOG output error variance analysis.)
- 2017-06-01 16:48:51下载
- 积分：1
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Attachments_2012_10_19
Automatic navigation system
- 2012-10-19 01:29:11下载
- 积分：1
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DCT
本文介绍了基于DCT 的图像压缩编码技术, 并给出了具体的实现方法和步骤, 既保证具有较高的压缩比, 又保证了较好的图像
质量。(This paper introduces the coding of image based on DCT , therefore,shows the details of realization . It provides high compressibility
and high quality.)
- 2009-05-22 01:37:43下载
- 积分：1
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pro-report
SIGNAL DETECTION FOR SPECTRUM SENSING
Spectrum sensing is a critical functionality in cognitive radio communications as it must be performed before allowing unlicensed users to access a vacant licensed band. Energy detector is also known as radiometer and it is most common method of spectrum sensing because of its low computational and implementation complexities. The coherent detector, also referred to as a matched filter, can improve detection performance if the primary transmitted signal, s, is deterministic and known a priori.
- 2013-04-08 13:53:19下载
- 积分：1
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Cooperative-communication
一篇北京邮电大学的博士论文。蜂窝网协作通信及相关技术研究 2010。关键词:协作通信，蜂窝网，多入多出，正交频分复用，频率复用系数，中继
(A Beijing University of Posts and Telecommunications doctoral thesis. Cellular communications and related technology research collaboration 2010. Keywords: cooperative communication, cellular network, multi-input, multiple output, orthogonal frequency division multiplexing, frequency reuse factor, relay)
- 2011-09-14 09:34:09下载
- 积分：1
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Three-dimensional-WSN
在TOA测距的基础上，提出了一种三维无线传感器网络节点定位算法，并对其性能进行了分析，给出了算法的时间同步误差和定位误差。最后在现有仿真平台OMNET++的基础上构建三维仿真模块，对算法进行了仿真实现，给出了该算法的定位精度和覆盖率(This paper proposes one three-dimensional localization algorithm based on TOA distance measurement and analyzed the performance of the algorithm calculated time synchronization error and localization error. Finally it constructed three-dimensional simulation modules based on OMNET++ and implemented the algorithm educed the localization precision and coverage.)
- 2012-03-09 16:26:34下载
- 积分：1
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instructions
Photovoltaic systems, solar thermal systems based on knowledge training(PVSystem)
- 2010-10-21 09:24:46下载
- 积分：1
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Meng-mdp
Two different types of measurement matrices: predefined and random measurement matrices were studied and tested using MATLAB. The speech signal was reconstructed without losing important information in order to achieve an increase in the data rates. After multiple simulations
- 2012-12-18 12:52:19下载
- 积分：1
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ZT-Series-ZigBee
zigbee的一些基础知识，引脚及其相关协议等(basic zigbee )
- 2011-12-23 17:20:13下载
- 积分：1
