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From: | Ramazan Çetin |
Subject: | Re: [Discuss-gnuradio] Multiple-Transmitter OFDM |
Date: | Mon, 24 Jun 2019 15:00:44 +0300 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 |
Hi Michael, Firstly, thank you for your suggestion. I have tried your
solution and i have transmitted two signals using PFB synthesizer.
At the receiver, i have used a PFB channelizer. In simulation,
this system works perfectly. I could receive two different files
at the receiver from two different transmitters. But when i tried this system on E310s, it fails. At the transmitter, E310 gives tGtGtGtGtGtGtGtG errors (I know this is related with length tags but i have already provided tag to USRP). At the receiver, it cannot receive signals. It gives this error: gr::log :INFO: header_payload_demux1 - Parser returned #f
This is obviously related with HPD. But, it does not give this
error continuously while signal is transmitting. Normally, if
header cannot be decoded, this error should be seen continuously.
Instead, it just gives at the beginning of signal. I have attached three GRC FGs. pfb_test is simulation environment
that works perfectly. pfb_transmitter and pfb_receiver are USRP
FGs. Do you have any idea about this situation? Best regards. Ramazan On 20.06.2019 21:16, Michael Dickens
wrote:
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pfb_receiver.grc
Description: XML document
pfb_test.grc
Description: XML document
pfb_transmitter.grc
Description: XML document
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