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hybrid

于 2013-06-21 发布文件大小:18KB

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下载积分: 1 下载次数: 3

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E-Cruitment Solutions is an ISO 9001:2008 certified HR & Software Development Company growing irreversibly in the field of Human Resource ,Web Design, Software Development, E-Commerce and Search Engine Optimization. We provide solutions for complete online presence using ASP.NET, HTML & PHP. We are an India’s Most Trusted Company with ISO 9001:2008 Certification. We also provide all the services that a company needs to get online, from web designing to development & to web hosting and above all website promotion in Google, Yahoo, MSN, AOL, Bing and other search engines. We have highly satisfied clients that are being serviced 24x7 by our team of over 30+ experienced and dedicated professionals. So you can deal with just one supplier and leave the rest to us - freeing you to focus on your business.

文件列表：

hybrid
......\BPSK_mrc.asv,1825,2012-11-27
......\BPSK_mrc.m,1825,2012-11-27
......\main_DEPSK_mrc.asv,358,2012-11-27
......\main_DEPSK_mrc.m,358,2012-11-27
......\QEPSK_mrc.asv,2394,2012-11-27
......\QPSK_mrc.asv,1832,2012-11-27
......\QPSK_mrc.m,1832,2012-11-27
......\Thumbs.db,18944,2012-04-08

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123
针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。(For multiple-input multiple-output with orthogonal frequency division multiplexing(MIMO-OFDM) systems,the error floor(EF) phenomenon at high signal noise rate(SNR) was induced by the expectation maximum(EM) channel estimation algorithm.In addition,the data transmission efficiency was declined obviously with the increasing number of transmit antennas.According to these problems,an improved and efficient EM channel estimation algorithm was pro-posed.Firstly,an accurate and equivalent signal model was introduc...)

2011-09-05 15:20:54下载

积分：1
GPS基线解算全过程 procdd
GPS基线解算全过程,包括标准格式数据读取，基线解算及整周模糊度解算(GPS baseline solution the whole process, including the standard format data is read, and the whole week baseline solution Ambiguity Resolution)

2020-06-27 07:20:02下载

积分：1
GPS_Signal_Generator-master
说明：超好的GPS信号仿真软件，本人研究生期间编写，可以作为深组合导航的数据源(Good GPS signal simulation software, compiled during my graduate school, can be used as the data source of deep integrated navigation)

2020-04-28 01:13:10下载

积分：1
分割面及各颜色分量
在图像上画一条线，提取所在位置的像素。主要是用来观察横向异质性变化的。(Draw a line on the image and extract the pixels at the location. Mainly used to observe changes in lateral heterogeneity.)

2020-06-17 18:40:01下载

积分：1
untitled
永磁同步电机数学模型，使用S函数编写，实验证明非常正确，请使用(Permanent magnet synchronous motor mathematical model, using the S function written in the experiment proved to be very correct, use the)

2012-07-16 14:49:55下载

积分：1
scfdma
DFTS--OFDM 仿真程序包括详细的PAPR仿真均可运行 (DFTS- OFDM simulation program should include a detailed simulation of the PAPR can be run)

2009-03-30 11:36:52下载

积分：1
kernel-ica
核独立主元分析（kernel independent component analysis)软件包，可在MATLAB 5或MATLAB 6环境下运行。(It is a kernel independent component analysis program packet that can be run under MATLAB 5 or MATLAB 6.)

2005-08-13 20:27:02下载

积分：1
6
说明： 6. 在三条径的瑞利信道中，对于OFDM： (1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真。画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(6. In the three-path Rayleigh channel, for OFDM: (1) please design a specific navigation-assisted channel estimation method and use Simulink for simulation.The relation curves of bit signal-noise ratio and channel estimation mean square error and the relation curves of bit signal-noise ratio and bit error rate are drawn. (2) if the frequency has been synchronized, please design a specific method of time synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit-snr and acquisition probability. (3) if time has been synchronized, please design a specific method of frequency synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit signal-to-noise ratio and frequency synchronization error.)

2019-01-15 10:59:38下载

积分：1
比较全的超声成像代码，基于fieldii平台
比较全的超声成像代码，程序运行需要基于field ii平台(More comprehensive ultrasound imaging code, the program needs to run based on field ii platform)

2020-11-02 10:19:53下载

积分：1
Inverter_Filter
采用pscad/emtdc环境开发逆变器的滤波器方式(pscad/emtdc develop inverter/filter)

2011-07-21 09:27:13下载

积分：1

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