top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

Facebook Login
Site Registration

What is the sub carrier spacing used in NR RACH transmission?

+1 vote
What is the sub carrier spacing used in NR RACH transmission?
posted Feb 12, 2018 by Jaganathan

Share this question
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

1 Answer

+1 vote
Best answer

I think the subcarrier spacing depend on PRACH preamble sequence.As per 3gpp specs
Subcarrier spacing 1.25 or 5 Khz used for long sequence (L_RA = 839).
subcarrier spacing 15,30,60 or 120 Khz for short sequence (L_RA = 139) .
where L_RA 839 or 139 depending on the PRACH preamble format .

answer Feb 14, 2018 by Mohit Mohan
Similar Questions
+1 vote

As far as i see, 15Khz is the minimum we come across in LTE, is it same in 5G?

If it is less than 15Khz then how do they maintain orthogonal property as indicated in LTE?

+1 vote

MCS,RB to TB size mapping is common for all the sub carrier spacing or is it different each configuration?

+1 vote

This can be usefull when UE's are in different location and different noise ratio? Is it possible

Contact Us
+91 9880187415
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Karnataka INDIA.