disable doppler and time drift simulation and compensation by default

executables/nr-softmodem-common.h

@@ -197,7 +197,6 @@ extern int RFsim_DriftPerFrame; //the timing offset/drift per frame in the RF si
 extern uint16_t pathStartingTime;    // time [sec] at which satellite is becoming visible to the UE.
 extern uint16_t pathEndingTime;      // time [sec] at which satellite is no more visible to the UE
 extern int uePosY;              // y-axis coordinate [m] of UE position
-extern int tdriftComp;         // flag to activate/deactivate continous timing drift compensation
 extern double FO_PScaling;  // P scaling factor of the PID controller for the Doppler compensation at UE side
 extern double FO_IScaling;  // I scaling factor of the PID controller for the Doppler compensation at UE side
 extern int TO_IScalingInit;    // initializing the accumulative part (I part) of the PI controller for the timing offset compensation

executables/nr-softmodem.c

@@ -579,14 +579,13 @@ void init_pdcp(void) {
 
 uint64_t RFsim_PropDelay = 0;
 uint16_t NTN_gNB_k2 = 0;
-int fdoppler = 1;               // flag to simulate frequency offset at the RF-Simulator (default active = 1, 0 = de-activate)
-int tshift = 0;               // flag to simulate timing offset at the RF-Simulator (default de-activate = 0, 0 = activate)
-int fdopplerComp = 1;
+int fdoppler = 0;             // flag to simulate frequency offset at the RF-Simulator (default de-active = 0, 1 = activate)
+int tshift = 0;               // flag to simulate timing offset at the RF-Simulator (default de-activate = 0, 1 = activate)
+int fdopplerComp = 0;
 int RFsim_DriftPerFrame = 0;
 uint16_t pathStartingTime = 1050;
 uint16_t pathEndingTime = 1280;
 int uePosY = 0;
-int tdriftComp = 1;
 int TO_IScalingInit = 0;
 int commonDoppler = 0;  // common doppler to be compensated at UE, but set here to avoid linking error
 int TO_init_rate = 0;

executables/nr-softmodem.h

@@ -34,13 +34,12 @@
   {"s" ,                    CONFIG_HLP_SNR,            0,                .dblptr=&snr_dB,                     .defdblval=25,                    TYPE_DOUBLE, 0},        \
   {"P" ,                    CONFIG_HLP_PROPD,          0,                .u64ptr=&RFsim_PropDelay,            .defintval=0,                     TYPE_UINT64, 0},        \
   {"gnb_k2" ,               CONFIG_HLP_GNBK2,          0,                .u16ptr=&NTN_gNB_k2,                 .defintval=0,                     TYPE_UINT16, 0},        \
-  {"FD" ,                   CONFIG_HLP_FDoppler,       0,                .iptr=&fdoppler,                     .defintval=1,                     TYPE_INT,    0},        \
+  {"FD" ,                   CONFIG_HLP_FDoppler,       0,                .iptr=&fdoppler,                     .defintval=0,                     TYPE_INT,    0},        \
   {"TS" ,                   CONFIG_HLP_TShift,         0,                .iptr=&tshift,                       .defintval=0,                     TYPE_INT,    0},        \
   {"TD" ,                   CONFIG_HLP_TDRIFT,         0,                .iptr=&RFsim_DriftPerFrame,          .defintval=0,                     TYPE_INT,    0},        \
   {"PST" ,                  CONFIG_HLP_PathStart,      0,                .u16ptr=&pathStartingTime,           .defintval=1050,                  TYPE_UINT16, 0},        \
   {"PET" ,                  CONFIG_HLP_PathEnd,        0,                .u16ptr=&pathEndingTime,             .defintval=1280,                  TYPE_UINT16, 0},        \
   {"ue_PosY" ,              CONFIG_HLP_uePosY,         0,                .iptr=&uePosY,                       .defintval=0,                     TYPE_INT,    0},        \
-  {"FC" ,                   CONFIG_HLP_FDopplerComp,   0,                .iptr=&fdopplerComp,                 .defintval=0,                     TYPE_INT32,  0},        \
   {"amc" ,                  CONFIG_HLP_AMC,            0,                .u8ptr=&amc_flag,                    .defdblval=0,                     TYPE_UINT8,  0},        \
   {"sinr-offset-dl" ,       CONFIG_HLP_SINR_OSET_DL,   0,                .dblptr=&sinr_offset_dl,             .defdblval=0,                     TYPE_DOUBLE, 0},        \
   {"sinr-offset-ul" ,       CONFIG_HLP_SINR_OSET_UL,   0,                .dblptr=&sinr_offset_ul,             .defdblval=0,                     TYPE_DOUBLE, 0}         \

executables/nr-ue.c

@@ -930,7 +930,6 @@ void *UE_thread(void *arg)
 
     int readBlockSize, writeBlockSize;
 
-    extern int tdriftComp;
     if (tdriftComp == 1)
     {
       rx_offset_slot = UE->rx_offset_TO * UE->rx_offset_slot / nb_slot_frame - UE->rx_offset_comp;

executables/nr-uesoftmodem.c

@@ -433,13 +433,13 @@ uint64_t RFsim_PropDelay = 0;
 uint16_t NTN_UE_k2 = 0;
 uint16_t NTN_UE_slot_Rx_to_Tx = 0;
 int RFsim_DriftPerFrame = 0;
-int32_t fdoppler = 1;              // flag to simulate frequency offset at the RF-Simulator (default active = 1, 0 = de-activate)
+int32_t fdoppler = 0;            // flag to simulate frequency offset at the RF-Simulator (default de-active = 0, 1 = activate)
 int32_t tshift = 0;              // flag to simulate timing offset at the RF-Simulator (default de-activate = 0, 1 = activate)
 uint16_t pathStartingTime = 1050;
 uint16_t pathEndingTime = 1280;
 int uePosY = 0;
-int fdopplerComp = 1; // flag to activate continous frequency offset compensation (=0 deacticated, =1 activated (default case))
-int tdriftComp = 1;
+int fdopplerComp = 0;     // flag to activate continous frequency offset compensation (=0 deacticated, =1 activated (default case))
+int tdriftComp = 0;
 double FO_PScaling = 0;   // P scaling factor of the PID controller for the Doppler compensation at UE side
 double FO_IScaling = 0;   // I scaling factor of the PID controller for the Doppler compensation at UE side
 

executables/nr-uesoftmodem.h

@@ -66,9 +66,9 @@
   {"P" ,                           CONFIG_HLP_PROPD,           0,               .u64ptr=&RFsim_PropDelay,                    .defintval=0,      TYPE_UINT64,   0}, \
   {"ue_slot_Rx_Tx" ,               CONFIG_HLP_UESLOTRXTX,      0,               .u16ptr=&NTN_UE_slot_Rx_to_Tx,               .defintval=0,      TYPE_UINT16,   0}, \
   {"ue_k2" ,                       CONFIG_HLP_UEK2,            0,               .u16ptr=&NTN_UE_k2,                          .defintval=0,      TYPE_UINT16,   0}, \
-  {"FD" ,                          CONFIG_HLP_FDoppler,        0,               .iptr=&fdoppler,                             .defintval=1,      TYPE_INT,      0}, \
+  {"FD" ,                          CONFIG_HLP_FDoppler,        0,               .iptr=&fdoppler,                             .defintval=0,      TYPE_INT,      0}, \
   {"TS" ,                          CONFIG_HLP_TShift,          0,               .iptr=&tshift,                               .defintval=0,      TYPE_INT,      0}, \
-  {"FC" ,                          CONFIG_HLP_FDopplerComp,    0,               .iptr=&fdopplerComp,                         .defintval=1,      TYPE_INT,      0}, \
+  {"FC" ,                          CONFIG_HLP_FDopplerComp,    0,               .iptr=&fdopplerComp,                         .defintval=0,      TYPE_INT,      0}, \
   {"TD" ,                          CONFIG_HLP_TDRIFT,          0,               .iptr=&RFsim_DriftPerFrame,                  .defintval=0,      TYPE_INT,      0}, \
   {"PST" ,                         CONFIG_HLP_PathStart,       0,               .u16ptr=&pathStartingTime,                   .defintval=1050,   TYPE_UINT16,   0}, \
   {"PET" ,                         CONFIG_HLP_PathEnd,         0,               .u16ptr=&pathEndingTime,                     .defintval=1280,   TYPE_UINT16,   0}, \
@@ -86,6 +86,8 @@
 }
 // clang-format on
 
+extern int tdriftComp;       // flag to activate/deactivate continous timing drift compensation
+
 typedef struct {
   uint64_t       optmask;   //mask to store boolean config options
   uint32_t       ofdm_offset_divisor; // Divisor for sample offset computation for each OFDM symbol

openair1/SIMULATION/NR_PHY/dlsim.c

@@ -85,8 +85,8 @@ uint16_t NTN_UE_k2 = 0;
 uint16_t NTN_UE_slot_Rx_to_Tx = 0;
 uint16_t NTN_gNB_k2 = 0;
 
-int fdopplerComp = 1; // flag to activate continous frequency offset compensation (=0 deacticated, =1 activated (default case))
-int tdriftComp = 1;
+int fdopplerComp = 0; // flag to activate continous frequency offset compensation (=0 deacticated (default case), =1 activated)
+int tdriftComp = 0;
 double FO_PScaling = 0.33;   // P scaling factor of the PID controller for the Doppler compensation at UE side
 double FO_IScaling = 0.5;    // I scaling factor of the PID controller for the Doppler compensation at UE side
 

openair1/SIMULATION/NR_PHY/pbchsim.c

@@ -53,7 +53,7 @@
 #include "nfapi/oai_integration/vendor_ext.h"
 //#define DEBUG_NR_PBCHSIM
 
-int fdopplerComp = 1;
+int fdopplerComp = 0;
 double FO_PScaling = 0.33;   // P scaling factor of the PID controller for the Doppler compensation at UE side
 double FO_IScaling = 0.5;    // I scaling factor of the PID controller for the Doppler compensation at UE side
 int commonDoppler = 0;  // common doppler to be compensated at UE

openair1/SIMULATION/NR_PHY/prachsim.c

@@ -66,7 +66,7 @@ uint16_t NTN_UE_k2 = 0;
 uint16_t NTN_UE_slot_Rx_to_Tx = 0;
 uint16_t NTN_gNB_k2 = 0;
 
-int fdopplerComp = 1;
+int fdopplerComp = 0;
 int commonDoppler = 0;  // common doppler to be compensated at UE
 
 PHY_VARS_gNB *gNB;

openair1/SIMULATION/NR_PHY/ulsim.c

@@ -79,8 +79,8 @@ uint16_t NTN_UE_k2 = 0;
 uint16_t NTN_UE_slot_Rx_to_Tx = 0;
 uint16_t NTN_gNB_k2 = 0;
 
-int fdopplerComp = 1; // flag to activate continous frequency offset compensation (=0 deacticated, =1 activated (default case))
-int tdriftComp = 1;
+int fdopplerComp = 0; // flag to activate continous frequency offset compensation (=0 deacticated (default case), =1 activated)
+int tdriftComp = 0;
 double FO_PScaling = 0.33;   // P scaling factor of the PID controller for the Doppler compensation at UE side
 double FO_IScaling = 0.5;    // I scaling factor of the PID controller for the Doppler compensation at UE side