NR PRACH Simulation Problem

Hello everyone,

I need help with the simulation of the NR PRACH preamble. Unfortunately, a function like ltePRACH does not currently exist in 5G Toolbox. Therefore, I was trying to modify the functions ltePRACH, ltePRACHinfo and ltePRACHDetect.

I tried to modify ltePRACHinfo by changing the preamble sequence length and the values of Ncs, but the functions always give me an error, since they expect a LTE sequence.

Has someone already solved such a problem?

Thank you in advance

[vanita]

LTE format 0 and 3 are same as 5G Format 0 and 1 respectively..

if you are changeing the length as per Table 6.3.3.1-1: PRACH preamble formats for LRA = 839 and f RA ∈Δ { } .1 25 5, kHz correctly then it gerenrates the PRACH correctly.

Answer 1

[Sriram Tadavarty]

Hi Valerio,

PRACH support is added in the 5G Toolbox latest release as part of MATLAB R2020a, which contains nrPRACH, nrPRACHIndices ,nrPRACHGrid, nrPRACHConfig, and the following examples

5G NR PRACH Configuration (information on PRACH time resources, preambles, configurations, and how to map PRACH symbols to the resource grid)

5G NR PRACH Waveform Generation (configure and generate time-domain waveform for a single PRACH configuration in a single carrier)

5G NR PRACH Detection Test (measure the probability of correct detection of the PRACH preamble in the presence of a preamble signal)

Hope these links help.

Regards,

Sriram