could anyone help me to overcome the error stating RESHAPE the number of elements must not change.

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jaah navi
jaah navi 2019-1-8
编辑： Luna 2019-1-9
function [ rx_data ] = ofdm_rx( sym_seq, mod_ofdm )
N_data = mod_ofdm.FFTLength - sum(mod_ofdm.NumGuardBandCarriers) - 1 - length(mod_ofdm.PilotCarrierIndices);
N_P = length(mod_ofdm.PilotCarrierIndices);
num_ofdmsym = mod_ofdm.NumSymbols;
pilot_seq_complex = rand (N_P, num_ofdmsym), rand (N_P, num_ofdmsym);
sym_mat = reshape(sym_seq, N_data, num_ofdmsym);
rx_data = step(mod_ofdm,sym_mat,pilot_seq_complex);
end
When i run the code containinf function i am getting error stating
Error using reshape
To RESHAPE the number of elements must not change.
Error in line 10 sym_mat = reshape(sym_seq, N_data, num_ofdmsym);
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Image Analyst
Image Analyst 2019-1-8
Luna, please put answers down BELOW in the official Answers section, so you can get credit for it. Your first comment looks pretty much like an answer to me.

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回答（1 个）

Luna
Luna 2019-1-9
Actually the error gives you the hint. The number of elements inside the array should be equal to multiplication of dimensions.
For example:
A is MxN matrix, and you want to reshape it into PxR matrix. Then M*N should be equal to P*R. So that reshape function can work as follows:
newA = reshape(A,P,R);
What is sym_seq, mod_ofdm ? And what do you want as desired output?

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