channel_bandwidth = "CBW20"; % 20MHz

rxFrame1 = trace1.iq(:);
rxFrame2 = trace2.iq(:);
rxFrame3 = trace3.iq(:);
rxFrame4 = trace4.iq(:);

function beaconFrames = extractBeaconFrames(rxFrame)
    beaconFrames = [];
    searchOffset = 0;


    while searchOffset < length(rxFrame)
        [bitsData, decParams, searchOffset, res] = recoverOFDMBits(rxFrame, searchOffset);
    
        if isempty(bitsData)
            continue;
        end
    
        [cfgMAC, ~, decodeStatus] = wlanMPDUDecode(bitsData, SuppressWarnings=true);
    
        if ~decodeStatus && matches(cfgMAC.FrameType, "Beacon")
            disp("Beacon at " + searchOffset);
            beaconFrames(end + 1) = cfgMAC;
        end
    end
end

beaconFrames1 = extractBeaconFrames(rxFrame1);