How to estimate channel quality using Sounding Referance Signal in 5G

10 Ansichten (letzte 30 Tage)
I know the symbols at the receiver side of SRS .But I dont know how to estimate channel quality with the received symbols.Can you explain what exactly channel quality means? and what is the approach to find channel quality

Akzeptierte Antwort

Sriram Tadavarty
Sriram Tadavarty am 26 Apr. 2020
Hi Kishore,
Sounding reference signals are uplink physical signals used by user equipment (UE) for uplink channel sounding, including synchronization and CSI estimation. CSI comprises channel quality indicator (CQI), rank indicator (RI), and precoder matrix indicator (PMI). Channel sounding is basically to estimate the channel.
For more details of the concept, look at the video here and example here.
Hope this helps.
Thanking you.
Regards,
Sriram
  6 Kommentare
Sriram Tadavarty
Sriram Tadavarty am 18 Mai 2020
Hi Kishore,
The CDM lengths used in the example are based on the structure of SRS configured. It tells about the spread in frequency domain and time domain as a two element vector [FD TD], that can be used for better channel estimation. You can turn off this by directly placing [1 1], if needed.
The spread depends on different antenna ports. If there is only single antenna port, there is no spreading leading to [1 1]. For two antenna ports, the frequency location will vary in each port, leading to [2 1]. Similarly for four antenna ports, it depends on the cyclic shifts leading to either [2 1] or [4 1].
Hope this helps.
Regards,
Sriram
KISHORE K E R
KISHORE K E R am 19 Mai 2020
Hi Sriram,
Thank you for your help.
Regards
Kishore

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)

Kategorien

Mehr zu Physical Channels finden Sie in Help Center und File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by