33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
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/* CHANNEL.H - Declarations regarding channels. */
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/* Copyright (c) 1995-2012 by Radford M. Neal.
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*
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* Permission is granted for anyone to copy, use, modify, and distribute
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* these programs and accompanying documents for any purpose, provided
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* this copyright notice is retained and prominently displayed, and note
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* is made of any changes made to these programs. These programs and
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* documents are distributed without any warranty, express or implied.
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* As the programs were written for research purposes only, they have not
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* been tested to the degree that would be advisable in any important
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* application. All use of these programs is entirely at the user's own
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* risk.
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*/
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/* TYPES OF CHANNEL, AND CHANNEL PARAMETERS. The global variables declared
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here are located in channel.c. */
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typedef enum { BSC, AWGN, AWLN } channel_type;
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extern channel_type channel; /* Type of channel */
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extern double error_prob; /* Error probability for BSC */
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extern double std_dev; /* Noise standard deviation for AWGN */
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extern double lwidth; /* Width of noise distributoin for AWLN */
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/* PROCEDURES TO DO WITH CHANNELS. */
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int channel_parse (char **, int);
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void channel_usage (void);
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