You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: FBMC.m
    path of file: ./repos/FBMC/+Modulation
    
    the code of the file until where you have to start completion: classdef FBMC < handle
    % =====================================================================        
    % This MATLAB class represents an implementation of FBMC. The 
    
    
function InterferenceMatrix = GetInterferenceMatrix(obj)
            % returns a matrix which represents the imaginary interference
            % weights in FBMC   
            
            DataSymbols=zeros(obj.Nr.Subcarriers,obj.Nr.MCSymbols);
            DataSymbols(1,1)=1;
            Y11=reshape(obj.Demodulation(obj.Modulation(DataSymbols)),obj.Nr.Subcarriers,obj.Nr.MCSymbols);
            [k_all,l_all] = meshgrid(0:obj.Nr.MCSymbols-1,0:obj.Nr.Subcarriers-1);
            Y11=Y11.*(exp(1j*pi/2*(l_all+k_all)).*exp(-1j*pi*k_all.*(l_all/2)));
            InterferenceMatrix = [Y11(end