未定义函数 em matlab,新人求助，代码运行总是显示没有定义该函数，如何改？...

[paraSet, interSiteDistance ]= initializeSystem();

BS = [];

radiusSite= (1/sqrt(3)).*interSiteDistance;

for beta = paramSet.system.penetLossBeta

tic

location                                 = [];

[paramSet.system.Peffective, Pttl_W]= ptransmit(paramSet,interSiteDistance,beta);

paramSet.system.Peffective     = paramSet.system.Peffective - 30;

gridStep                       = paramSet.system.gridWidth;

for index =1:length(interSiteDistance)

location                             = [];

nanoBSPlacement                      = 'FivePerSite';

BS                                   = [];

BS       = generatNetwork(BS, radiusSite(index), nanoBSPlacement);

BS      = [BS(1:31),BS(42),BS(49),BS(56),BS(63),BS(70),BS(35)];

paramSet.system.nBS=length(BS);

gridWidth= interSiteDistance(index)/2 + paramSet.nano.radius;

gridHeight   = radiusSite(index)           + paramSet.nano.radius;

gridPointsX = -gridWidth:gridStep:gridWidth;

gridPointsY = -gridHeight:gridStep:gridHeight;

count       = 1;

chunk       = 1;

for k=gridPointsX

for kk=gridPointsY

[location(count).signalLevel ,location(count).distance] = computeSpectralEfficiency(BS, paramSet, k, kk, index+1, beta);

location(count).averageSignalLevel = sum(location(count).signalLevel(:,:,:),3)/paramSet.system.numSamples;

count = count + 1;

if length(location) == paramSet.system.chunkSize

filename = strcat('signal Levels', '_', num2str(beta), '_', num2str(interSiteDistance(index)),'_', num2str(chunk),'.mat');

save(filename, 'location');

location     = [];

count        = 1;

chunk        = chunk + 1;

end

end

end

if ~(isempty(location))

filename = strcat('signalLevels', '_', num2str(beta),...

'_',num2str(interSiteDistance(index)),'_', num2str(chunk),'.mat');

save(filename, 'location');

end

%=============================

step=index

%=============================

gridStep     = gridStep + paramSet.system.gridIncrement;

end

elapsedTime = toc

end

未定义函数或变量 'initializeSystem'。

出错 Untitled4 (line 5)

[paramSet, interSiteDistance ]      = initializeSystem()

如题