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From: | James Wanga |
Subject: | How can I split a periodic signal? |
Date: | Thu, 25 Aug 2022 10:52:45 -0700 |
I'm receiving a phase modulated signal representing a periodic pulsed byte that looks something like this:
-------------|-|||--||-------------|||--||||-------------|--||||-|-------------
I'm trying to understand how I might split this signal roughly halfway between each pulse of activity so I can save each pulse as a separate IQ fil, bit like this:
------|-|||--||------
-------|||--||||-------
------|--||||-|------
The split does not have to be precise, it only needs to avoid bisecting any of the pulses. Here are some things I've tried.- Creating a custom block on the receiver that uses a timing interval. Unfortunately, the pulses aren't perfectly periodic so eventually this causes the split to drift.
- Since I also control the transmitter, I tried sending an async pmt message from the transmitter to the receiver, but again, since the message is async the timing is too unpredictable to make an accurate enough cut.
- I was also wondering if there is any way to propagate a tag from a transmitter to a receiver if both are in the same flow graph, but I couldn't find any info on how to do this.
Any Ideas? Thanks!
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