/* | | Copyright disclaimer: |   This software was developed at the National Institute of Standards |   and Technology by employees of the Federal Government in the course |   of their official duties. Pursuant to title 17 Section 105 of the |   United States Code this software is not subject to copyright |   protection and is in the public domain. | |   We would appreciate acknowledgement if the software is used. |*//* | Project:     WCDMA simulation environment | Module:     | Author:     | Date:       | | History:  |*/      #ifndef CHANNEL_H#define CHANNEL_H#include <stdlib.h> #include <math.h>#include <stdio.h>#include "config_wcdma.h"#include "rake.h"/* Define the random coefficient for noise generator scaling/**/#ifndef NOISE_MAX_RANDOM#define NOISE_MAX_RANDOM  MAX_RANDOM/2#endif /*#ifndef MAX_CHANNELS#define MAX_CHANNELS 10   #endif     /* maximum number of available simultaneous channels *//*#define MAX_CHANNEL_IMPULSES 20  /*number of channel impulses /**//* #define MAX_RANDOM 32767.0/**/enum{ CONST = 1, RANDOM, INTERPOL};struct channel_matrix_type{  int mode;                              /*  = CONSTANT - RANDOM - INTERPOL*/   int n_taps;                            /* Number of taps in channel/**/  int n_impulses;                        /* Number of channel impulses/**/  double cur_channel[MAX_CHANNEL_TAPS];  /* Current channel_amplitudes/**/  int cur_delays[MAX_CHANNEL_TAPS];      /* Current channel amplitudes /**/  int max_memory;  double amplitudes[MAX_CHANNEL_IMPULSES][MAX_CHANNEL_TAPS];  /* Amplitude matrix*/  int delays[MAX_CHANNEL_IMPULSES][MAX_CHANNEL_TAPS];             /* Delay matrix*/  int max[MAX_CHANNEL_IMPULSES];         /* Maximum "in between" values INTERPOL only*/    int use[MAX_CHANNEL_IMPULSES];         /* Current in between index INTERPOL only*/  int cur_impulse;                       /*  Current base impulse INTERPOL only*/    double noise_std;                      /*  Signal to noise ratio coefficient*/       double cumul_prob[MAX_CHANNEL_IMPULSES]; /* sumulative probabilities for RANDOM only*/  int *I_prev_chips ;                    /* Previous chips from I-branch*/  int *Q_prev_chips ;                    /* Previous chips from Q-branch*/};typedef struct channel_matrix_type channel_matrix;struct channel_matrix_type_double{  int mode;                              /*  = CONSTANT - RANDOM - INTERPOL*/   int n_taps;                            /* Number of taps in channel/**/  int n_impulses;                        /* Number of channel impulses/**/  double cur_channel[MAX_CHANNEL_TAPS];  /* Current channel_amplitudes/**/  int cur_delays[MAX_CHANNEL_TAPS];      /* Current channel amplitudes /**/  int max_memory;  double amplitudes[MAX_CHANNEL_IMPULSES][MAX_CHANNEL_TAPS];  /* Amplitude matrix*/  int delays[MAX_CHANNEL_TAPS][MAX_CHANNEL_TAPS];             /* Delay matrix*/  int max[MAX_CHANNEL_IMPULSES];         /* Maximum "in between" values INTERPOL only*/    int use[MAX_CHANNEL_IMPULSES];         /* Current in between index INTERPOL only*/  int cur_impulse;                       /*  Current base impulse INTERPOL only*/    double noise_std;                      /*  Signal to noise ratio coefficient*/       double cumul_prob[MAX_CHANNEL_IMPULSES]; /* sumulative probabilities for RANDOM only*/  double *I_prev_chips ;                    /* Previous chips from I-branch*/  double *Q_prev_chips ;                    /* Previous chips from Q-branch*/};typedef struct channel_matrix_type_double channel_matrix_double;/*****************************************************/int wcdma_channel_init(	      double channel_impulse[],/* IN: Channel impulse vector*/	      int  channel_delays[],   /* Delay taps */	      int  nTaps,	       /* channel impulse vector size */	      int  nImpulse,           /* IN: number of channel impulse vectors 					  = 1 for Constant channel /**/	      double impulse_prob[],   /* IN: Channel impulse vector probabilities*/	      int  nFrames,            /* IN: Total number of frames send during 					  = 0 for Random channel /**/	      double esno,             /* IN: SNR/**/	      double power,            /* IN: Power/**/	      int  nCode               /* IN: Length of the scrambling code/**/		       );                    int wcdma_channel( 	     int  Inputs[],	        /* IN: input chip vector */	     int  Qnputs[],	        /* IN: input chip vector */	     int  nInputs,	        /* IN: input vector size */	     int  instance,	        /* IN:  */	     double channel[],          /* OUT: Channel impulse vector*/	     int  delays[],             /* OUT: Delays of channel taps*/	     double Iout[],             /* OUT: output bit vector */ 	     double Qout[]);            /* OUT: output bit vector */int wcdma_channel_conv( 	     int  Inputs[],	        /* IN: input chip vector */	     int  Qnputs[],	        /* IN: input chip vector */	     int  nInputs,	        /* IN: input vector size */	     int  instance,	        /* IN: indicates the channel instance used*/ 	     double Iout[],             /* OUT: output bit vector */	     double Qout[]              /* OUT: output bit vector */	     );  int wcdma_channel_conv_nonoise( 	     int  Inputs[],	        /* IN: input chip vector */	     int  Qnputs[],	        /* IN: input chip vector */	     int  nInputs,	        /* IN: input vector size */	     int  instance,	        /* IN: indicates the channel instance used*/ 	     double Iout[],             /* OUT: output bit vector */	     double Qout[]              /* OUT: output bit vector */	     );  int wcdma_channel_impulse(	    double impulse_cumul[],     /* IN: Cumulative probalities*/		 	    int nImpulse);              /* OUT: currently used channel impulse */int wcdma_update_memory_chips(	    int  Inputs[],	        /* IN: input chip vector */	    int  Qnputs[],	        /* IN: input chip vector */	    int nInputs,                /* IN: length input chip vector */	    channel_matrix *data        /* IN/OUT channel data /**/  );int wcdma_channel_free(int instance);void channel_print(int instance);        /* Print fuction for testing purpose/**//*****************************************************/int wcdma_channel_init_double(	      double channel_impulse[],/* IN: Channel impulse vector*/	      int  channel_delays[],   /* Delay taps */	      int  nTaps,	       /* channel impulse vector size */	      int  nImpulse,           /* IN: number of channel impulse vectors 					  = 1 for Constant channel /**/	      double impulse_prob[],   /* IN: Channel impulse vector probabilities*/	      int  nFrames,            /* IN: Total number of frames send during 					  = 0 for Random channel /**/	      double esno,             /* IN: SNR/**/	      double power,            /* IN: Power/**/	      int  nCode               /* IN: Length of the scrambling code/**/		       );                    int wcdma_channel_double( 	     double  Inputs[],	        /* IN: input chip vector */	     double  Qnputs[],	        /* IN: input chip vector */	     int  nInputs,	        /* IN: input vector size */	     int  instance,	        /* IN: channel instance*/	     double channel[],          /* OUT: Channel impulse vector*/	     int  delays[],             /* OUT: Delays of channel taps*/	     double Iout[],             /* OUT: output bit vector */ 	     double Qout[]);            /* OUT: output bit vector */int wcdma_channel_conv_double( 	     double  Inputs[],	        /* IN: input chip vector */	     double  Qnputs[],	        /* IN: input chip vector */	     int  nInputs,	        /* IN: input vector size */	     int  instance,	        /* IN: indicates the channel instance used*/ 	     double Iout[],             /* OUT: output bit vector */	     double Qout[]              /* OUT: output bit vector */	     );  int wcdma_channel_conv_nonoise_double( 	     double  Inputs[],	        /* IN: input chip vector */	     double  Qnputs[],	        /* IN: input chip vector */	     int  nInputs,	        /* IN: input vector size */	     int  instance,	        /* IN: indicates the channel instance used*/ 	     double Iout[],             /* OUT: output bit vector */	     double Qout[]              /* OUT: output bit vector */	     );  int wcdma_channel_impulse_double(	    double impulse_cumul[],     /* IN: Cumulative probalities*/		 	    int nImpulse);              /* OUT: currently used channel impulse */int wcdma_update_memory_chips_double(	    double  Inputs[],	        /* IN: input chip vector */	    double  Qnputs[],	        /* IN: input chip vector */	    int nInputs,                /* IN: length input chip vector */	    channel_matrix_double *data        /* IN/OUT channel data /**/  );int wcdma_channel_free_double(int instance);void channel_print_double(int instance);        /* Print fuction for testing purpose/**/#endif /* -------------------------------------------------------------------- */