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5G-MAG / rt-mbms-modem

MBMS - Modem
https://www.5g-mag.com/5gbroadcast
GNU Affero General Public License v3.0
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Rel-16 CAS support on rt-mbms-modem (1.2.0) ? #31

Closed m-bures closed 12 months ago

m-bures commented 2 years ago

We tried to demodulate signal from R&S transmitter (8 MHz) when CAS set on transmitter to Rel 16. The modem (1.2.0) gets synced, shows correct information about PDSCH channel but no information about MCH (PMTCH) and no stream on the output. On TU Braunschweig / R&S receiver signal is decoded and multicast stream is on the output.

We also tried Sample Stream from:

https://github.com/5G-MAG/Documentation-and-Architecture/wiki/Sample-Files

for Rel 16

https://obeca-testdaten.s3.eu-central-1.amazonaws.com/8MHz_MCS16_1kHz25_Rel16.raw

and saw the same results. Please see the attached files @dsilhavy @kuehnhammer

We might have a wrong settings somewhere but when Rel 14 set on Tx then it works.

Thank you. Michal

Rel_16_Screenshot from 2022-03-16 14-23-42 Rel_16_Screenshot from 2022-03-16 14-24-14

m-bures commented 2 years ago

One thing that I omitted and didn’t specify.

I was referring to Rel-16 implementation in terms of Rel-16 CAS but using numerologies of Rel 14 i.e. 1,25 kHz and 7,5 kHz (not 370 Hz or 2,5 kHz).

We tried with 1,25 kHz SC, the recording in Sample Files is with 7,5 kHz.

I don't know whether it makes any difference @kuehnhammer

dsilhavy commented 2 years ago

As discussed in the developers call: Rel-16 CAS is currently not supported in the rt-mbms-modem.

kuehnhammer commented 1 year ago

Duplicate of #9, #10, #11

dsilhavy commented 12 months ago

Closing as covered in #9 #10 and #11. We keep progress in the dedicated issues