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