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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
- 积分:1
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re_weibull_signal
次程序用来仿真叠加了地杂波和高斯白噪声的回波信号(Second program is used to simulate the ground clutter superimposed Gaussian white noise and the echo signal)
- 2011-11-24 10:37:49下载
- 积分:1
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fenxuan
这是自己收集的一些有关信号分选的比较优秀的毕业论文,希望对需要的人有所帮助(Some comparison of the signal sorting excellent thesis)
- 2010-06-02 16:46:29下载
- 积分:1
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ComRegist2000
这是一个用VC编写的MSCOMM控件的注册安装示例工程源代码,对于单片机的上位机软件开发是一个不错的小工具(This is a prepared using VC control register MSCOMM sample project to install the source code for the MCU PC software development is a good gadget)
- 2007-09-23 13:37:38下载
- 积分:1
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tongxinzongheshiyan
微波实验设计,设计波导滤波器和波导等功率分配器(Microwave experimental design, waveguide filter design and waveguide power divider etc.)
- 2013-11-28 09:48:03下载
- 积分:1
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调制仿真
说明: 基带信号QPSK和16QAM的调制仿真,绘制误码率和误符号率的曲线(Base band signal QPSK and 16QAM modulation simulation, drawing error rate and error symbol rate curve.)
- 2020-10-26 20:31:01下载
- 积分:1
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obextest
用c#编写的程序,用与两个蓝牙设备的通讯,有发送数据等功能.(prepared using the procedures used with two Bluetooth devices of communication, send data capabilities.)
- 2005-07-12 16:52:13下载
- 积分:1
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TTTOOA_uwbh
这是在uwb系统中,用TOA定位法的的整个系统的仿真程序源码
(This is a simulation program source code for the entire system in uwb systems, TOA positioning method)
- 2020-08-11 19:58:26下载
- 积分:1
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EtherCAT Slave DC Sync to customer
说明: 实现Ethercat现场通讯的主从站代码实例(An Example of Master-slave Station Code for Ethercat Field Communication)
- 2019-04-06 13:54:05下载
- 积分:1
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Cap02_Shadowing
无线信道建模一直以来都很复杂,而且不同场景下的模型差异较大,这是一本专门讲解无线信道建模方法的书籍配套的matlab例程(Channel modeling has been very complex, and the model under different scenarios are quite different, which is the one devoted to channel modeling method books matching matlab routines)
- 2013-09-13 09:43:26下载
- 积分:1