jeudi, août 13, 2020
Home 5G knowledge What is the benefit of using additional DMRS in 5G?

What is the benefit of using additional DMRS in 5G?

My friend: Hi Ibrahim, I have a question.

Me: Go ahead.

My friend: While checking the log files after the last trail of adding additional DMRS (Demodulation Reference Signal), I noticed that the peak DL throughput decreased. Is it OK? Me: Yes, this is expected as additional DMRS will use extra symbol for transferring DMRS instead of PDSCH and so less resources will be available for PDSCH, that’s why peak DL throughput should decrease.

My friend: So, is it beneficial to add additional DMRS?

Me: Actually, the target of adding additional DMRS is to enhance the channel estimation as this is the main function of DMRS and you can notice at the logs that average DL throughput during mobility is enhanced as MCS (Modulation and Coding Scheme) is more stable now unlike with one DMRS only where MCS decreased when speed increases, also the percentage of using 256QAM is higher with additional DMRS which enhances average DL throughput further. Also, SINR is improved and decrease in peak DL throughput is minor. BTW, 3GPP is allowing up to 3 additional DMRS in one slot and we are using only one additional DMRS.

My friend: Thanks a lot. Me: You are welcome. Please share arround you to clear it for everyone, and have a look to our last articles

Source: Ibrahim Sayed

Linkedin Profile:


Please enter your comment!
Please enter your name here

Most Popular

Can UE transmit or receive data in idle mode in 5G?

My friend: Hi Ibrahim, I have … Me (smiling to him): No, this time I’m going to ask you. My friend: Ok, let’s change the roles,...

Number of 5G Devices in July 2020 and price Forecast

The number of announced 5G devices has continued to climb swiftly, where we noticed in July 2020 a continued rapid rise in the number...

UK has confirmed the ban of Huawei’s 5G equipment from 2021

Due to national security risks, the UK government has confirmed the ban on using equipment from Chinese supplier Huawei in 5G networks. It means...

What is Reflective QoS in 5G?

My friend: Hi Ibrahim, I have a question for you. Me: Please, go ahead. My friend: While checking our last discussion about QoS in 5G (see...

Benefit from Massive discount on our 5G Training with

The most complete and comprehensive 5G training, follow this link for more information

Start your 5G journey and obtain 5G certification

contact us:  [email protected]

Don’t Miss The Last 5G News! Subscribe Now

Don’t miss the last 5G news! Subscribe Now