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This commit is contained in:
Laurent THOMAS
2021-03-04 13:22:14 +01:00
parent fdc818bc06
commit 3b1b74cfd2
6 changed files with 37 additions and 15 deletions
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openair1/SIMULATION/TOOLS/random_channel.c
+10 -4
View File
@@ -502,7 +502,8 @@ channel_desc_t *new_channel_desc_scm(uint8_t nb_tx,
double DS_TDL,
double forgetting_factor,
int32_t channel_offset,
double path_loss_dB) {
double path_loss_dB,
float noise_power_dB) {
channel_desc_t *chan_desc = (channel_desc_t *)calloc(1,sizeof(channel_desc_t));
for(int i=0; i<max_chan;i++) {
if (defined_channels[i] == NULL) {
@@ -530,6 +531,8 @@ channel_desc_t *new_channel_desc_scm(uint8_t nb_tx,
chan_desc->path_loss_dB = path_loss_dB;
chan_desc->first_run = 1;
chan_desc->ip = 0.0;
chan_desc->noise_power_dB = noise_power_dB;
LOG_I(OCM,"Channel Model (inside of new_channel_desc_scm)=%d\n\n", channel_model);
int tdl_paths=0;
@@ -1861,7 +1864,7 @@ static int channelmod_print_help(char *buff, int debug, telnet_printfunc_t prnt
prnt("channelmod show current: display the currently used models in the running executable\n");
prnt("channelmod modify <model index> <param name> <param value>: set the specified parameters in a current model to the given value\n");
prnt(" <model index> specifies the model, the show current model command can be used to list the current models indexes\n");
prnt(" <param name> can be one of \"riceanf\", \"aoa\", \"randaoa\", \"ploss\", \"offset\", \"forgetf\"\n");
prnt(" <param name> can be one of \"riceanf\", \"aoa\", \"randaoa\", \"ploss\", \"noise_power_dB\", \"offset\", \"forgetf\"\n");
return CMDSTATUS_FOUND;
}
@@ -1874,8 +1877,8 @@ static void display_channelmodel(channel_desc_t *cd,int debug, telnet_printfunc_
prnt("nb_tx: %i nb_rx: %i taps: %i bandwidth: %lf sampling: %lf\n",cd->nb_tx, cd->nb_rx, cd->nb_taps, cd->channel_bandwidth, cd->sampling_rate);
prnt("channel length: %i Max path delay: %lf ricean fact.: %lf angle of arrival: %lf (randomized:%s)\n",
cd->channel_length, cd->Td, cd->ricean_factor, cd->aoa, (cd->random_aoa?"Yes":"No"));
prnt("max Doppler: %lf path loss: %lf rchannel offset: %i forget factor; %lf\n",
cd->max_Doppler, cd->path_loss_dB, cd->channel_offset, cd->forgetting_factor);
prnt("max Doppler: %lf path loss: %lf noise: %lf rchannel offset: %i forget factor; %lf\n",
cd->max_Doppler, cd->path_loss_dB, cd->noise_power_dB, cd->channel_offset, cd->forgetting_factor);
prnt("Initial phase: %lf nb_path: %i \n",
cd->ip, cd->nb_paths);
for (int i=0; i<cd->nb_taps ; i++) {
@@ -1945,6 +1948,9 @@ static int channelmod_modify_cmd(char *buff, int debug, telnet_printfunc_t prnt)
} else if ( strcmp(param,"ploss") == 0) {
double dbl = atof(value);
defined_channels[cd_id]->path_loss_dB=dbl;
} else if ( strcmp(param,"noise_power_dB") == 0) {
double dbl = atof(value);
defined_channels[cd_id]->noise_power_dB=dbl;
} else if ( strcmp(param,"offset") == 0) {
int i = atoi(value);
defined_channels[cd_id]->channel_offset=i;
openair1/SIMULATION/TOOLS/sim.h
+3 -1
View File
@@ -89,6 +89,7 @@ typedef struct {
double path_loss_dB;
///additional delay of channel in samples.
int32_t channel_offset;
float noise_power_dB;
///This parameter (0...1) allows for simple 1st order temporal variation. 0 means a new channel every call, 1 means keep channel constant all the time
double forgetting_factor;
///needs to be set to 1 for the first call, 0 otherwise.
@@ -280,7 +281,8 @@ channel_desc_t *new_channel_desc_scm(uint8_t nb_tx,
double TDL_DS,
double forgetting_factor,
int32_t channel_offset,
double path_loss_dB);
double path_loss_dB,
float noise_power_dB);
/**
\brief free memory allocated for a model descriptor
\param ch points to the model, which cannot be used after calling this fuction