PBCH DM-RS
Processing PBCH DM-RS.
blockType: PBCHDMRS
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Path in the library: |
Description
Block PBCH DM-RS plots every possible sequence of PBCH DM-RS and performs channel and noise estimation. The DM-RS PBCH index with the best signal-to-noise ratio (SNR) determines the LSBs index of the SS/PBCH block required to initialize PBCH scrambling.
The block performs the following actions:
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Definition of PBCH DM-RS indices.
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Performing channel evaluation using DM-RS symbols for each possible DM-RS sequence, SNR evaluation.
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Channel estimation for the entire SS/PBCH block using the SSS and PBCH DM-RS usage detected in the previous steps. Additive noise estimation is also performed on PBCH DM-RS/SSS.
Ports
Input
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Nid
—
the NID sequence
scalar
Details
The detected NID sequence in the received signal.
| Data types |
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| Complex numbers support |
I don’t |
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ResGrid
—
demodulated signal in the form of a complex matrix
the matrix
Details
The demodulated signal returned as a complex matrix.
| Data types |
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| Complex numbers support |
I don’t |
Output
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ISSB
—
SS/PBCH block index
a positive integer
Details
The SS/PBCH block index required to initialize PBCH scrambling.
| Data types |
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| Complex numbers support |
I don’t |
#
ChEst
—
estimated channel information returned as a complex matrix
the matrix
Details
Channel estimation for the entire SS/PBCH block using SSS and PBCH DM-RS usage.
| Data types |
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| Complex numbers support |
I don’t |
#
NoiEst
—
estimated information about noise dispersion
positive scalar
Details
Estimation of additive noise in PBCH DM-RS and SSS.
| Data types |
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| Complex numbers support |
I don’t |