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| Copyright (C) 2005-2006 | Hervé Jégou |
| Vivien Chappelier | |
| Francois Cayre |
00001 /* 00002 libit - Library for basic source and channel coding functions 00003 Copyright (C) 2005-2008 Francois Cayre, Vivien Chappelier, Herve Jegou 00004 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Library General Public 00007 License as published by the Free Software Foundation; either 00008 version 2 of the License, or (at your option) any later version. 00009 00010 This library is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Library General Public License for more details. 00014 00015 You should have received a copy of the GNU Library General Public 00016 License along with this library; if not, write to the Free 00017 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00018 */ 00019 00020 /* 00021 Channel 00022 Copyright (C) 2005-2008 Vivien Chappelier, Herve Jegou 00023 */ 00024 00025 #ifndef __it_channel_h 00026 #define __it_channel_h 00027 00028 #include <it/vec.h> 00029 00030 00031 /* Basic BPSK modulation */ 00032 vec modulate_bpsk (bvec b); 00033 00034 /* Binary symmetrical channel */ 00035 bvec channel_bsc (bvec v, double crossover_proba); 00036 00037 /* Return a vector pertubated by a white gaussian additive noise of variance sigma */ 00038 vec channel_awgn (vec v, double sigma); 00039 00040 #endif
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