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List:       usrp-users
Subject:    [USRP-users] RFNoC Delay blocks
From:       jcasallas2019 () gmail ! com
Date:       2021-06-21 20:09:20
Message-ID: pRweDt82qOjIowdXsRgGfluQuLAHyTdbYbuT7j9LfI () lists ! ettus ! com
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Hi all,

I am planning to implement a RFNoC delay block, but first I would like to go through \
the RFNoC delay blocks examples like delay_fifo and type 2, 3 and 4, to this regard,  \
here are my questions:

System UHD 4.0 on the x310, 2 UBX dboards.

1. If we are using the data rate 25Msps, I wonder if we can have delays up to the \
second order. Based on the verilog code of those blocks, I can see max lengths of \
1023 samples which will give a very short delay and is not what we want.

2. All the applications I have been working on, use rx_streamer and tx_streamer, I \
wonder if the delay can be implemented in following way, so we do not need to send \
the command start streaming but the time start for the radio to receive a signal.

Rx_radio -> DDC -> Delay -> DUC  -> TX Radio

Thanks

J


[Attachment #5 (text/html)]

<p>Hi all,</p><p>I am planning to implement a RFNoC delay block, but first I would \
like to go through the RFNoC delay blocks examples like delay_fifo and type 2, 3 and \
4, to this regard,  here are my questions:</p><p>System UHD 4.0 on the x310, 2 UBX \
dboards.</p><ol><li><p>If we are using the data rate 25Msps, I wonder if we can have \
delays up to the second order. Based on the verilog code of those blocks, I can see \
max lengths of 1023 samples which will give a very short delay and is not what we \
want.</p></li><li><p>All the applications I have been working on, use rx_streamer and \
tx_streamer, I wonder if the delay can be implemented in following way, so we do not \
need to send the command start streaming but the time start for the radio to receive \
a signal.</p></li></ol><p>Rx_radio -&gt; DDC -&gt; Delay -&gt; DUC  -&gt; TX \
Radio</p><p><br></p><p>Thanks</p><p>J</p>



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