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

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

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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
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