[srslte-users] Range of srsLTE over the air with USRP B205mini-i

[john wu]

Hi,
i have tested B210 achieve good throughput in about 1 meter. then increase the distance the throughput drop.
i think B205mini have the same rf performance as b210.  for the TX gain i think you can set it as 86db, if larger than 86db the evm become worse. for RX gain you can set to max. what kind of antenna you are using? i know B205MINI TX and RX port is very close if your antenna stick on the sma port then can not achieve enough isolation. you can use the antenna with cable and put TX and RX distance about 0.5m.



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Best Regards

________________________________
From: srslte-users <srslte-users-bounces at lists.softwareradiosystems.com> on behalf of Ashwin Panicker <ampanick at ncsu.edu>
Sent: Thursday, February 20, 2020 8:07
To: srslte-users at lists.softwareradiosystems.com <srslte-users at lists.softwareradiosystems.com>
Subject: [srslte-users] Range of srsLTE over the air with USRP B205mini-i

Hi everyone,

I am trying to find the maximum range over which iPERF can be run with srsLTE over the air with two USRP B205mini-i. Has anyone tried it before? If so what is the maximum range achieved? and what are the txgain and rxgain settings of UE and eNB?
When I try to do it, I am getting Radio Link Failure often. It starts with good throughput initially, but after sometime , it falls to 0 Mbps with Radio Link failure message.

Thanks.

Best,
Ashwin Panicker

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