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[问答]

LTE基带和射频互相关

我想观察LTE基带和RF UL信号的互相关结果,以识别定时事件,例如帧的开始,子帧,DMRS等。我已经在Agilent MSO9064A和RF上捕获了基带
VSA 89600B和Agilent N9030A。
我将捕获文件提供给matlab并执行交叉相关,输出中没有明显的事件尖峰。
有任何想法吗?

以上来自于谷歌翻译


     以下为原文

  I would like to observe the cross-correlation results of LTE baseband and RF UL signals to identify timing events, such as the beginning of frames, sub-frames, DMRS, etc. I have captured the baseband on an Agilent MSO9064A and the RF using VSA 89600B and an Agilent N9030A. I fed the capture files to MatLab and performed the cross-correlation with no obvious event spikes in the output. Any ideas?  

回帖(1)

李欢

2019-7-9 13:23:34
Hi - VSA中目前不提供RF和基带之间的跨通道测量。
在89600 VSA中,我们在相同硬件的通道之间提供互相关结果(因此对于多通道硬件采集)。
但是,这是我们在VSA软件中唯一的内置功能。
有两个不同的前端,可能他们可以使用数学函数,但似乎2次采集之间的时间对齐可能是一个问题。
这不是我们探索过的应用程序。
即使在MATLAB中进行分析,我认为你必须小心不同的采样率和开始时间。
问候 -

以上来自于谷歌翻译


     以下为原文

  Hi -

Cross channel measurements between RF and baseband are not currently available in the VSA.

In the 89600 VSA we provide cross-correlation results between channels of the same hardware (so for multi-channel hardware acquisitions).  But, that’s the only built-in functionality we have in the VSA software.  With 2 different front-ends, potentially they could use math functions, but seems like time alignment between the 2 acquisitions could be a problem.  

This is not an application we have explored.  Even performing the analysis in MATLAB, I think you’d have to be careful of differing sample rates and start times.

Regards -
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