how to obtain pathgains of winner2 channel

the channel is generated by the following code

BSAA  = winner2.AntennaArray('UCA', 1, 0.02);  % UCA-8 array for BS
MSAA1 = winner2.AntennaArray('ULA', 1, 0.01);  % ULA-2 array for MS

MSIdx = [2]; 
BSIdx = {1}; 
numLinks = 2; 
rndSeed = 5;
cfgLayout = winner2.layoutparset(MSIdx,BSIdx, numLinks,[BSAA,MSAA1],[],rndSeed);

cfgLayout.Pairing = [1 ; 2 ];  % Index in cfgLayout.Stations
cfgLayout.ScenarioVector = [6]; 

numBSSect = sum(cfgLayout.NofSect);
numMS = length(MSIdx);


cfgLayout.Stations(2).Velocity=[1.6;0;0];
cfgLayout.Stations(1).Pos(1:2) = [50, 150];
cfgLayout.Stations(2).Pos(1:2) = [10, 180];  % 8 meters away from BS

BSPos = cell2mat({cfgLayout.Stations(1:numBSSect).Pos});
MSPos = cell2mat({cfgLayout.Stations(numBSSect+1:end).Pos});

frameLen = 64; % Number of samples to be generated

cfgWim = winner2.wimparset;
cfgWim.NumTimeSamples      = 80;
cfgWim.IntraClusterDsUsed  = 'yes'; 
cfgWim.CenterFrequency     = 2.76e9;
cfgWim.UniformTimeSampling = 'yes'; 
cfgWim.ShadowingModelUsed  = 'yes';  
cfgWim.PathLossModelUsed   = 'no';  
cfgWim.UseManualPropCondition = 'yes';
cfgWim.RandomSeed          = 31415927; 
cfgWim.NormalizeChannelOutputs='false';

downWINNERChan = comm.WINNER2Channel(cfgWim,cfgLayout);

and the input data is

sourceData = randi([0 1],(80,1);

then the pathgains and output are obainted

[ChanOut, pathGains] = downWINNERChan(sourceData);
pathGains1=squeeze(cell2mat(pathGains));
pathGains1=sum(pathGains)';
rx_data=cell2mat(ChanOut);
tx_data_estimate=rx_data./pathGains;

I wonder why tx_data_estimate is different from sourceData?