Documentation

nrPBCH

Generate PBCH modulation symbols

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Syntax

sym = nrPBCH(cw,ncellid,v)
sym = nrPBCH(cw,ncellid,v,'OutputDataType',datatype)

Description

example

sym= nrPBCH(cw,ncellid,v)returns the physical broadcast channel (PBCH) modulation symbols for the physical layer cell identity numberncellid. The function implements TS 38.211 Section 7.3.3[1]. The inputcwis the BCH codeword, as described in TS 38.212 Section 7.1.5[2]. The inputvspecifies the scrambling sequence phase.

sym= nrPBCH(cw,ncellid,v,'OutputDataType',datatype)specifies the data type of the PBCH symbol.

Examples

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Generate the sequence of 432 PBCH quadrature phase shift keying (QPSK) modulation symbols. Consider the first Synchronization Signal / Physical Broadcast Channel (SS/PBCH) block in a burst. Assume that the number of SS/PBCH blocks per half-frame is 4. To represent the encoded BCH bits, generate a random sequence of binary values. The length of the random sequence corresponds to the PBCH bit capacity as specified in TS 38.212 Section 7.1.5.

ncellid = 17; ssbindex = 0; v = mod(ssbindex,4); E = 864; cw = randi([0 1],E,1); sym = nrPBCH(cw,ncellid,v);

Input Arguments

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BCH码字、指定为一个列向量比娜ry values. The size of the vector isE= 864, as specified in TS 38.212 Section 7.1.5.

Data Types:double|int8|logical

Physical layer cell identity number, specified as an integer from 0 to 1007.

Data Types:double

Scrambling sequence phase, specified as an integer from 0 to 7.vis derived in a synchronization signal (SS) burst configuration, from the least significant bits (LSBs) of the SS/PBCH block index.

  • If the number of SS/PBCH blocks per half-frame is 4, thenvis the two LSBs of the SS/PBCH block index (0 to 3).

  • If the number of SS/PBCH blocks per half-frame is 8 or 64, thenvis the three LSBs of the SS/PBCH block index (0 to 7).

Data Types:double

Data type of the output symbols, specified as'double'or'single'.

Data Types:char|string

Output Arguments

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PBCH modulation symbols, returned as a complex column vector.

Data Types:single|double

References

[1]3GPP TS 38.211. “NR; Physical channels and modulation.”3rd Generation Partnership Project; Technical Specification Group Radio Access Network.

[2]3GPP TS 38.212. “NR; Multiplexing and channel coding.”3rd Generation Partnership Project; Technical Specification Group Radio Access Network.

Extended Capabilities

See Also

Functions

Introduced in R2018b

5G Toolbox Documentation
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