MIB and BCH Parsing Example in 5G user guide not working

Hello Everyone

I try the example of MIB and BCH Parsing which is in 5G user guide and in the mathwork website

MIB and BCH example

% Parse the last 23 decoded BCH transport block bits into a MIB message.

% The BCH transport block 'trblk' is the RRC message BCCH-BCH-Message,

% consisting of a leading 0 bit and 23 bits corresponding to the MIB. The

% leading bit signals the message type transmitted (MIB or empty sequence).

mib = fromBits(MIB,trblk(2:end)); % Do not parse leading bit

% Create set of subcarrier spacings signaled by the 7th bit of the decoded

% MIB, the set is different for FR1 (L_max=4 or 8) and FR2 (L_max=64)

if (refBurst.L_max==64)

commonSCSs = [60 120];

else

commonSCSs = [15 30];

end

initialSystemInfo = struct();

initialSystemInfo.NFrame = mib.systemFrameNumber*2^4 + bit2int(sfn4lsb,4);

initialSystemInfo.SubcarrierSpacingCommon = commonSCSs(mib.subCarrierSpacingCommon + 1);

initialSystemInfo.k_SSB = k_SSB + mib.ssb_SubcarrierOffset;

initialSystemInfo.DMRSTypeAPosition = 2 + mib.dmrs_TypeA_Position;

initialSystemInfo.PDCCHConfigSIB1 = info(mib.pdcch_ConfigSIB1);

initialSystemInfo.CellBarred = mib.cellBarred;

initialSystemInfo.IntraFreqReselection = mib.intraFreqReselection;

% Display the MIB structure

disp(' BCH/MIB Content:')

disp(initialSystemInfo);

% Check if a CORESET for Type0-PDCCH common search space (CSS) is present,

% according to TS 38.213 Section 4.1

if ~isCORESET0Present(refBurst.BlockPattern,initialSystemInfo.k_SSB)

fprintf('CORESET 0 is not present (k_SSB > k_SSB_max).\n');

return

end

but it is not work, insteade I get the following error messege

Unrecognized function or variable 'MIB'.

what is the wrong with the code, and what can I do to overcome the error and get results

Thank you in advance

[OscarVenegas Cooper]

Hello,

I've got the same problem, I have been searching for several hours and have not found anything. The function fromBits does not even exist in the Matlab documentary.

By chance, did you find the fix? Could you share it?