PBCH DM-RS
PBCH DM-RS treatment.
Description
The PBCH DM-RS block constructs every possible DM-RS PBCH sequence and performs channel and noise estimation. The DM-RS PBCH DM-RS index with the best signal-to-noise ratio (SNR) determines the LSBs index of the SS/PBCH block required to initialise PBCH scrambling.
The block performs the following actions:
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Determining the DM-RS PBCH indices.
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Perform channel estimation using DM-RS symbols for each possible DM-RS sequence, SNR estimation.
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Channel estimation for the entire SS/PBCH block using the SSS and PBCH DM-RS detected in the previous steps. Additive noise estimation is also performed on the PBCH DM-RS/SSS.
Ports
Input
ResGrid - demodulated signal as a complex matrix
matrix
Demodulated signal returned as a complex matrix.
Data types: ComplexF64.
Nid - NID sequence
scalar
The detected NID sequence in the received signal.
Data types: Float64.
Output
ISSB - SS/PBCH block index
positive integer
SS/PBCH block index required to initialise PBCH scrambling.
Data types: Int64.
ChEst - channel estimation information returned as a complex matrix
matrix
Channel estimation for the entire SS/PBCH block using SSS and PBCH DM-RS.
Data types: ComplexF64.
NoisEst - estimated noise variance information
`positive scalar
Additive noise estimation in PBCH DM-RS and SSS.
Data types: Float64.