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34 Commits
Author SHA1 Message Date
Eurecom c834f40186 Merge remote-tracking branch 'origin/develop' into bandwidth-testing 
Conflicts:
	executables/nr-uesoftmodem.c
	executables/nr-uesoftmodem.h
	executables/softmodem-common.h
	openair1/PHY/MODULATION/slot_fep_nr.c
	openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
	openair1/PHY/NR_TRANSPORT/pucch_rx.c
	openair1/SCHED_NR/fapi_nr_l1.c
	openair1/SCHED_NR_UE/phy_procedures_nr_ue.c
	openair1/SIMULATION/TOOLS/abstraction.c
	openair1/SIMULATION/TOOLS/random_channel.c
	openair2/LAYER2/NR_MAC_UE/mac_proto.h
	openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c
	openair2/LAYER2/NR_MAC_UE/nr_ue_scheduler.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
 2021-09-05 15:37:11 +02:00
Raymond Knopp 8a9194300f commit before merge 2021-08-09 10:55:55 +02:00
Rodolphe BERTOLINI 387223eea6 removed duplicate structure, changed 'x' to 'r' and 'y' to 'i' 2021-08-09 09:59:38 +02:00
Raymond Knopp d88ce5b9bf Merge remote-tracking branch 'origin/develop' into oairu 2021-04-27 11:58:31 +02:00
hardy 246afc7ccb Merge remote-tracking branch 'origin/sim-channels' into integration_2020_wk15 2021-04-14 14:37:09 +02:00
Laurent OpenCells c0ef3e6f88 fix gcc reported issues 2021-04-03 23:37:58 +02:00
Laurent THOMAS 0827488303 noise power 2021-03-17 19:34:27 +01:00
frtabu 1f0e82664f enhance channel model configuration 2021-03-10 02:33:31 +01:00
Laurent THOMAS 3b1b74cfd2 starting 2021-03-04 13:22:14 +01:00
Raymond Knopp d06018d1e3 Merge branch 'four_antenna_eNB' into oairu 2021-02-07 17:46:23 +01:00
Raymond Knopp 78f14bc9a4 fixed build for oairu executable. tested with sirius/phoenix 2021-01-28 21:53:24 +01:00
Raymond Knopp f04846cf4f 2 and 4 antenna testing with ulsim functional. >=3 dB gains from 2 to 4 antennas on SCM channels 2021-01-26 13:25:07 +01:00
Parminder Singh 741a5b98e7 Added sin cos table implementation for dlsim 
- Sin and Cos values are obtained from a table with a resolution of
  100.
- dlsim is updated to use this table for phase noise.
 2020-11-03 11:26:37 +01:00
Thomas Schlichter 73f5851690 Merge remote-tracking branch 'develop' 
Conflicts:
	openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
	openair1/PHY/NR_TRANSPORT/pucch_rx.c
	openair1/SIMULATION/NR_PHY/ulsim.c
 2020-09-08 12:01:37 +02:00
Parminder Singh 92fc259592 Merge remote-tracking branch 'origin/develop' into fhg_shp_phase_noise_est 2020-09-01 12:55:50 +02:00
Parminder Singh b288eafd1e Common Phase error estimation and compensation in uplink. 
FEATURE STATEMENT:
- Introduce linear phase error noise model in Uplink at UE
- Perform common phase error (CPE) estimation and compensation at gNB

SOLUTION:
- A linear phase shift model is introduced in simulation.
- PTRS symbols are used to perform estimation of CPE from DMRS compensated signal
- The estimated values are interpolated in time domain and signal is compensated for the CPE.
- PTRS processing is done in Frequency Domain for each symbol in a slot and
  LLR's are calculated for each symbol accordingly.

IMPLEMENTATION:
* sim.h/channle_sim.c
- Linear Phase Noise Generation model definition.
* nr_ul_channel_estimation.c/nr_ul_estimation.h
- CPE estimation from PTRS and DMRS compensated signal.
* nr_dmrs_rx.c/nr_refsig.h
- Regenerate PTRS symbols at gNB.
* nr_ulsch_demodulation.c
- Removed old PTRS processing code and move to a common PTRS processing function
* defs_gNB.h/init.c
- New PTRS variables definition and initialization
* nr_ulsch_ue.c
- Corrected PTRS parameter to get new PTRS symbols for each OFDM symbol

TESTING
* ulsim.c
- Added Phase noise, Enable PTRS signal and verified the output.

VERIFICATION
- The LLR are rotated back with estimated CPE and no error is observed in scrambling/decoding
 2020-08-27 11:55:06 +02:00
Francesco Mani fd003dd786 Merge remote-tracking branch 'origin/develop' into NR_UL_scheduling 2020-08-20 12:37:21 +02:00
Raymond Knopp 49a14c4f9f fixes for TDL channel models in nr_ulsim 2020-08-13 09:43:50 +02:00
Raymond Knopp 13d1be0782 added TDL channel models and use them in nr_ulsim 2020-08-12 16:23:14 +02:00
frtabu d4bd2cdc63 implement modifying channel model algo while running, complete function freeing a model 2020-07-29 20:27:04 +02:00
frtabu 7eb2ab66c5 add telnet commands to show and modify channel simulation parameters 2020-07-28 01:33:16 +02:00
Francesco Mani bedb295dfd Merge branch 'develop' into NR_RRC_harq_hacks 2020-06-09 20:32:35 +02:00
Thomas Schlichter 614083f03f Merge branch 'develop' into NR_RRC_PRACH_procedures 
Conflicts:
	cmake_targets/CMakeLists.txt
	openair2/GNB_APP/gnb_app.c
	openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c
	openair2/RRC/NR/rrc_gNB_nsa.c
 2020-06-09 13:03:28 +02:00
laurent 1ff806d519 fix shared lib dependency error 2020-06-05 18:26:47 +02:00
Bo Zhao 7ea608720f Extend the length of the channel processing to 32 bits 2020-02-10 19:56:39 +01:00
yilmazt 54899a9be1 merge of develop&develop-nr 2019-09-12 16:02:36 +02:00
frtabu d3217ac30b fix phy simulators build Pb: move snr_dB global to simulation code, add a channel mode section in configuration for snr_dB ,add a parameter flag in the config module to allow omitting prefix when modifying a parameter (for compatibility of -s option) 2019-08-07 18:42:35 +02:00
frtabu f3a757ce5a add channel model option to rfsimulator and prevent common libraries re-compilation when using both --UE --eNB options in build_oai script 2019-08-06 19:10:55 +02:00
frtabu 7995f413ef add config options for rfsimulator, set a common lib for l1sim and rfsimulator, avoid simulation sources to be added twice in some execs (tau.c) 2019-07-31 18:31:02 +02:00
yilmazt 3c1d1bffee Pushing changes before incorporating new merges into develop and develop-nr 2019-05-28 21:56:41 +02:00
Florian Kaltenberger df18f5933a adding first version of the pbchsim. so far only freq domain signal generated. 
not all regression tests done (had to touch some header files)
 2018-09-18 01:38:02 -07:00
Raymond Knopp 8dd9cf3c86 creation of simulation data structure. some cleanup and testing with multiple UEs 2018-06-04 00:12:48 +02:00
Raymond Knopp 293110e2cc cleanup of warnings and default parameters for simulator target 2018-06-03 08:48:42 +02:00
Raymond Knopp 8b1416b862 debugging of new directory structure, file renaming, and eNB/UE splitting. dlsim/ulsim functional. 2018-04-09 15:32:49 -07:00