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alsrhas

于 2020-12-18 发布文件大小:4KB

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下载积分: 1 下载次数: 4

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此为频偏校正程序,通过TD_GG算法得到的频偏值还存在几赫兹的残余频偏(The program for the deviation correction, deviation value is obtained by TD_GG algorithm also has a few Hertz residual frequency offset)

文件列表：

0dingshi_modify.m,2136,2005-06-30
fankui.m,2821,2005-12-24
gngauss.m,629,2001-05-23
kalmann.m,206,2005-06-30
pin_pian.m,290,2005-03-01
test_finally_edition.asv,8233,2005-12-24
test_finally_edition.m,8234,2006-02-17
xiang_wei.m,547,2005-01-12
说明.txt,31,2006-02-24

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A
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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

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2013-03-03 10:12:00下载

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2020-06-17 09:20:02下载

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CAN-bus-communication
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积分：1

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alsrhas

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