[Describe the issue in detail]
I have been using srsRAN_4G with BladeRF 2.0 micro xa4. I was able to get ~70 Mbps in SISO TM1 mode for 100 PRB's.
I am using a COTS 4G phone and it does support 2x2 mimo.
I configured tm = 4 and nof_ports =2 to try out TM4 2x2 MIMO setup.
There seems to be some issue as I can never get any speed more than 70 Mbps even though I have intel I9 machine.
I started checking configurations and how tm mode and nof_tb is at various points in the code and I can see that number of TB's is always 1.
As per release notes, TM3/TM4 should work.
Any quick inputs??
Setup Details
[Specify details of the test setup. This would help us reproduce the problem reliably]
e.g. Network configuration, Operation System, Hardware, RF front-end, library and driver versions
Ubuntu 22.04 LTS, Intel i9 13th gen core, bladeRF 2.0 micro xa4
Expected Behavior
[What you expect to happen]
I should have seen almost doublt the DL throughput say close to ~140 Mbps.
Actual Behaviour
[What happens instead e.g. error message]
I see only ~70 Mbps
Steps to reproduce the problem
[Tell us how to reproduce this issue e.g. RF setup, application config files]
By configuring tm=4 and nof_ports = 2
Additional Information
[Any additional information, configuration or data that might be necessary to reproduce the issue]
Issue Description
[Describe the issue in detail] I have been using srsRAN_4G with BladeRF 2.0 micro xa4. I was able to get ~70 Mbps in SISO TM1 mode for 100 PRB's. I am using a COTS 4G phone and it does support 2x2 mimo. I configured tm = 4 and nof_ports =2 to try out TM4 2x2 MIMO setup. There seems to be some issue as I can never get any speed more than 70 Mbps even though I have intel I9 machine.
I started checking configurations and how tm mode and nof_tb is at various points in the code and I can see that number of TB's is always 1.
As per release notes, TM3/TM4 should work.
Any quick inputs??
Setup Details
[Specify details of the test setup. This would help us reproduce the problem reliably] e.g. Network configuration, Operation System, Hardware, RF front-end, library and driver versions Ubuntu 22.04 LTS, Intel i9 13th gen core, bladeRF 2.0 micro xa4
Expected Behavior
[What you expect to happen] I should have seen almost doublt the DL throughput say close to ~140 Mbps.
Actual Behaviour
[What happens instead e.g. error message] I see only ~70 Mbps
Steps to reproduce the problem
[Tell us how to reproduce this issue e.g. RF setup, application config files] By configuring tm=4 and nof_ports = 2
Additional Information
[Any additional information, configuration or data that might be necessary to reproduce the issue]