Hello good day. The simulation M_QAM_Model gives me these errors: Error in 'M_QAM_Model / AWGN Channel': Parameter '1 / M * sum (abs (RectQAM_const (M)). ^ 2) 'can not be Evaluated. MATLAB error message: Undefined function or method 'RectQAM_const' for input arguments of type 'double'. Error in 'M_QAM_Model / QAM Demodulator Baseband General': Parameter 'RectQAM_const (M)' can not be Evaluated. MATLAB error message: Undefined function or method 'RectQAM_const' for input arguments of type 'double'. Error in 'M_QAM_Model / General QAM Modulator Baseband': Parameter 'RectQAM_const (M)' can not be Evaluated. MATLAB error message: Undefined function or method 'RectQAM_const' for input arguments of type 'double'. Do not know how to fix it. Help me please.
