I want to do SC-FdMA modulation in MATLAB 2017a but when i open script, for its 'given example' in 'MATLAB 2017a help' I got error.

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Sajid Sarwar
Sajid Sarwar 2018-12-11
评论： Sajid Sarwar 2018-12-12
%% Perform SC-FDMA Modulation
% Perform SC-FDMA modulation of one subframe of random
% uniformly-distributed noise, using a 10MHz configuration.
%%
ue = struct('NULRB',50);
dims = lteULResourceGridSize(ue);
reGrid = reshape(lteSymbolModulate(randi([0,1],prod(dims)*2,1), ...
'QPSK'),dims);
waveform = lteSCFDMAModulate(ue,reGrid);
got following errors
Undefined function 'lteULResourceGridSize' for input arguments of type 'struct'.
Error in PerformSCFDMAModulationExample (line 7)
dims = lteULResourceGridSize(ue);
Kindly help to resolve the issue.

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