Engee documentation

DL-SCH Decode

DL-SCH common downlink decoding.

dl sch decode

Description

The block DL-SCH Decode performs decoding of the DL-SCH common downlink signal, which has been encoded according to the protocol [1]. The block outputs the logarithmic likelihood ratio (LLR) values corresponding to the received codewords.

Ports

Input

DCIBits - DCI input message
matrix

DCI bit sequence.

Data types: Int64.

PDSCHBits - sequence of bits for PDSCH block encoding
vector

A sequence of bits to encode a PDSCH block as a vector.

Data types: Float64.

SSBInd - MIB information and parameters for the block
vector

MIB information and parameters for the block (NID structure and cell identifier ncelid) as a vector with integer values.

Data types: Int64.

Output

SIB1 - sequence of decoded bits
vector

Output sequence of decoded bits.

Data types: Int8.

Parameters

Main

Block Pattern - frequency range identifier
Case A | Case B (by default) | Case C | Case D | Case E

For the 5G standard, the frequency range used is specified in the documentation.

Frequency range designation Frequency range

FR1: Case A,Case B,Case C

410 MHz - 7125 MHz

FR2: Case D,Case E

24250 MHz - 52600 MHz

Usage in programme code

Block parameter

BlockPattern

Values

Case A | Case B | Case C | Case D | Case E

By default

Case B

Minimum channel bandwidth for the NRb (MHz) - setting the minimum channel bandwidth for the NR band in MHz
5 (By default) | 10 | 40

Set the minimum channel bandwidth for the NR band in MHz.

Usage in program code

Block parameter

MainChannelBW

Values

5 | 10 | 40

By default

5

References

  1. 3GPP TS 38.212. "NR; Multiplexing and channel coding." 3rd Generation Partnership Project; Technical Specification Group Radio Access Network.

  2. Glossary: Standard 5G