[srslte-users] Rank Indicator reported value

[Xavier Arteaga]

Hi Paul,
I see you are getting RI=0 (1 Layer), I guess you would like to have RI=1
(2 layers).

The examples pdsch_enodeb and pdsch_ue can help you tweaking antenna
position.

lib/examples/pdsch_enodeb -x 3 -p 50 -f 2650e6
lib/examples/pdsch_ue -r 1234 -A 2 -f 2650e6

The pdsch_ue provides the condition number:
            κ: 0,0 dB, RI=1 (Condition number, 0 dB => Best)

Kind regards,
Xavier

On Tue, 23 Jun 2020 at 16:23, Paul Matsagos <pavlosmats at gmail.com> wrote:

> Dear Havier thank you for your reply!
>
> In the link below you will find the enb and ue log files:
> https://drive.google.com/file/d/1SSz6c6YkzMnRlm0ed3zXQ1O753CW6uVs/view?usp=sharing
> Thank you in advance!
>
> Kind regards,
> Paul
>
> Στις Τρί, 23 Ιουν 2020 στις 8:34 π.μ., ο/η Xavier Arteaga <
> xavier at softwareradiosystems.com> έγραψε:
>
>> Hi Paul,
>> The PCAP does not provide CSI reports. Could you provide the enb.log and
>> ue.log with PHY level in info?
>>
>> Kind regards,
>> Xavier
>>
>> On Mon, 22 Jun 2020 at 17:23, Paul Matsagos <pavlosmats at gmail.com> wrote:
>>
>>> Hello everyone,
>>>
>>> My name is Paul and I am a master student in telecommunications. I am
>>> using srsLTE in order to simulate a LTE network and measure the performance
>>> of it for my thesis.
>>> I am using two USRPs X300 (one for the eNB and the other for the UE as
>>> well as a smartphone) and I have configured the enb.conf file for MIMO
>>> transmission in TM 4. Because the computers in my university aren't fast
>>> enough to support PRB higher than 25, when I am using the second USRP as a
>>> UE, I have set the PRB to 15 and when I am using the smartphone I have set
>>> it to 25. In both cases I don't lose packets because of the performance of
>>> my machines.
>>> Although the reported values of CQI, SNR, MSC and RSRQ from both eNB and
>>> UE are optimal because the distance between the eNB and UE is 3 meters with
>>> line of site, the RI have always the same value which is 1. I have tried
>>> different combinations of tx_gains and rx_gains in both sides but the RI
>>> value doesn't change. Can you please help me?
>>> The following link have the configuration files (enb.conf, ue.conf) as
>>> well as a file with measurements from both the eNB and UE and the .pcap
>>> files:
>>> https://drive.google.com/file/d/1baxO6KJGcAAwZLmjIjNDswfytwF2c1cQ/view?usp=sharing
>>> Thank you in advance!
>>>
>>> Best regards,
>>> Paul
>>> _______________________________________________
>>> srslte-users mailing list
>>> srslte-users at lists.softwareradiosystems.com
>>> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>>>
>>
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