文章分析了MIMO技术的特点,构建了MIMO系统总体框图,分析了MIMO的系统容量在有无信道状态信息下的信道容量。使用MATLAB对MIMO系统进行建模仿真,通过对其在有无信道状态信息情况下,分别进行了MIMO系统平均容量、在10%中断容量下的信道容量仿真分析。仿真结果表明:MIMO系统在低信噪比时有信道状态信息的容量更大,并且随着天线数目的增加而扩大。
2021-06-22 12:02:33
813KB
QPSK调制方式，卷积码信道编码，维特比译码，分别用硬判决和软判决进行误比特率性能仿真
2021-06-22 09:01:37
1007B
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A class of aeronautical wide-band channel models
is proposed, featuring parking and taxi environments, takeoff
and landing situations, and en-route scenarios for ground–air
and air–air links. Typical and worst case parameter sets are
suggested, based on published measurement results and empirical
data. The models are suitable for channel emulators that can
be easily implemented on digital computers or in hardware and
thus are useful for the validation of digital aeronautical links.
A time-domain and frequency-domain implementation of such
a channel emulator are derived, and results for a typical multicarrier
system are presented. It is shown that the scenarios have
distinguishable performance results depending on the underlying
maximum ranges and shapes of the Doppler and delay spectra and
the presence of a line-of-sight path. Finally, the degrading effects
of intersymbol interference and intersubcarrier interference on
the multicarrier signal are explained.
2021-06-21 17:52:30
490KB
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无线信道抗衰落技术的研究与仿真 包括基于Matlab的.M程序仿真代码以及完整论文下载，对于无线信道抗衰落技术有一定参考价值
2021-06-21 17:35:43
2.19MB
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MATLAB实现SISO信道模型中的室外模型，包括FEGN-Clarke/Gans信道模型，改进的频域/时域FEGN信道模型，jakes模型，基于射线的模型，SUI信道模型
2021-06-19 16:28:28
16KB
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