[srslte-users] PDCCH MISS being too High with PDSCH transmission

[Justin Tallon]

Hey Sandeep!

I see in the logs "Sandy setting mbsfn_subframe to true"

Are setting this value to True?

Can you try to receive a commercial cell with the pdsch_ue to see if you
can see a reasonable signal?

try 806000000 or 816000000.

Thanks,
Justin

____
Justin Tallon Ph.D.

Software Radio Systems (SRS)
http://www.softwareradiosystems.com

+353-86-067-0753 | justin.tallon at softwareradiosystems.com

On Fri, Feb 9, 2018 at 2:32 PM, Sandeep Sarma -ERS, HCL Tech <
sandeep-s at hcl.com> wrote:

> Hello srsLTE Users,
>
>
> I have a test setup with 2 USRP B210 SDRs and a wired RF cable between Tx
> and Rx antenna ports.
>
>
> While I run the pdsch_enb and pdsch_ue example scripts, I see a lot of DCI
> miss through PDCCH-Miss % being around 90-98%.
>
>
> Tx_gain, clock rate is default and I have a 30DB attenuator at the
> pdsch_ue (USRP Rrx side).
>
>
> Below are the commands and verbose logs are attached.
>
> pdsch_enb:
>
> ./pdsch_enodeb -f 5200000000 -m 11 -p 50 -v -n 5000
>
>
> pdsch_ue:
>
> ./pdsch_ue -f 5200000000 -r 1234 -v
>
>
> I've also tried with increasing the tx_gain and mcs but situation is same.
>
>
> Appreciate if I can hear from anyone on how to improve the decoding at the
> receiving end. It would help tremendously.
>
>
> BR,
>
> Sandeep
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