[srsran-users] LTE: DL and UL decoding procedure (order) in Matlab

[Sabyrzhan Tasbolatov]

Could anyone please help me with the practical or theoretical part?

I'm trying to read the srsRAN code, but I need the implementation in Matlab.

I got the code on how to decode DL-SCH and I got DCI 0/4 formats (UL
grant), but what is the procedure for DL and UL decoding via Matlab?
I am referring to theory at sharetechnote slides.
If I am iterating every SFN and internal loop for each subframe for DL
decoding, then where I should insert a function to decode UL signal?

Like

rxGrid = lteOFDMDemodulate(enb, dlWaveform);
while (size(rxGrid,2) > 0)
    ...
    % iterate every SFN
    for subframeIdx = 0:9
        % iterate every subframe and detect DCI and decode it
        ...
        % on every 4th SFN I Have MIB, and every even I have SIB1
        % then I have SIB2 where I have params for UL PUCCH, PRACH etc.
        % but I need to use ASN.1 decoder (or wireshark LTE dissector)
to get real values from symbols.
        ...
        if UE.DCI.Format == "Format0"
            % this is UL Grant. What should I do with this subframe?
        end
    end
end

rxGridUl = lteSCFDMADemodulate(FRC,ulWaveform);
% ??? how can I properly use rxGridUl to decode UL-SCH, RACH channels?

-- 
         Sabr