In the latest versions of MATLAB Simulink, they have added a block for the OFDM Baseband Modulator. I have gone through the article provided by the MATLAB support on the OFDM block. However, I am confused as to what input shall I feed to the OFDM Modulator block. I tried feeding BPSK symbols but I get an error saying the input dimensions do not match the required input size. The input size mentioned in the MATLAB support is given as [Ndata X Nsymbol X Npilot]. However, I am unable to make my input signal in the form of a signal having three dimensions as required. Please help me in this as to what input shall I feed in or help me in making the signal have three dimensions in Simulink. Also, I would be grateful if anyone of you could help me in giving an example file on how to use the OFDM Modulator block in Simulink. Thank you in advance!