f

 FUNCTION f() implements the nonlinearity

 INPUT:
 x: input signal

 OUTPUT:
 y: output signal

 Complex Valued Nonlinear Adaptive Filtering toolbox for MATLAB
 Supplementary to the book:
 
 "Complex Valued Nonlinear Adaptive Filters: Noncircularity, Widely Linear and Neural Models"
 by Danilo P. Mandic and Vanessa Su Lee Goh
 
 (c) Copyright Danilo P. Mandic 2009
 http://www.commsp.ee.ic.ac.uk/~mandic
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You can obtain a copy of the GNU General Public License from
    http://www.gnu.org/copyleft/gpl.html or by writing to
    Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


 ...........................................

0001 % FUNCTION f() implements the nonlinearity
0002 %
0003 % INPUT:
0004 % x: input signal
0005 %
0006 % OUTPUT:
0007 % y: output signal
0008 %
0009 % Complex Valued Nonlinear Adaptive Filtering toolbox for MATLAB
0010 % Supplementary to the book:
0011 %
0012 % "Complex Valued Nonlinear Adaptive Filters: Noncircularity, Widely Linear and Neural Models"
0013 % by Danilo P. Mandic and Vanessa Su Lee Goh
0014 %
0015 % (c) Copyright Danilo P. Mandic 2009
0016 % http://www.commsp.ee.ic.ac.uk/~mandic
0017 %
0018 % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0019 %    This program is free software; you can redistribute it and/or modify
0020 %    it under the terms of the GNU General Public License as published by
0021 %    the Free Software Foundation; either version 2 of the License, or
0022 %    (at your option) any later version.
0023 %
0024 %    This program is distributed in the hope that it will be useful,
0025 %    but WITHOUT ANY WARRANTY; without even the implied warranty of
0026 %    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0027 %    GNU General Public License for more details.
0028 %
0029 %    You can obtain a copy of the GNU General Public License from
0030 %    http://www.gnu.org/copyleft/gpl.html or by writing to
0031 %    Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA.
0032 % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
0033 %
0034 %
0035 % ...........................................
0036 %
0037 function y = f(x)
0038 y = tanh(x);