i simulate this code on matlab but there's error, please what is the wrong ? what is the correct code ?? this is message show
" Undefined function or method 'ofdm_QR_closeform' for input arguments of type 'double'.
Error in ==> ofdm at 18 [MSE_QR(i)]=ofdm_QR_closeform(N,P, Ng, M, k, w, phi, snrdb, MC, h, m_index); "