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What is the RACH PRB size for the NR cell ?Is it same as LTE?Is so what is the sub carrier spacing?

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What is the RACH PRB size for the NR cell ?Is it same as LTE?Is so what is the sub carrier spacing?
posted Mar 13 by Himani

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2 Answers

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Perhaps it will vary according to NR numberology .

answer Mar 18 by Raj
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PRACH size in terms of PRBs depends upon the preamble format chosen and it can vary from 6 PRBs to 24 PRBs in NR. Also PRACH SCS changes with sequence length or preamble format and can be 1.25, 5, 15, 30, 60 or 120 KHz. For LTE, I think PRACH size in terms of PRBs is fixed to 6 and SCS is always 15Khz.

answer May 16 by Faisal Adeem Siddiqui
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+1 vote

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

+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?

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