An error occurred fetching the project authors.
- 27 Aug, 2020 1 commit
-
-
Parminder Singh authored
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
-
- 07 May, 2020 1 commit
-
-
Francesco Mani authored
-
- 04 May, 2020 1 commit
-
-
Raymond Knopp authored
-
- 22 Apr, 2020 1 commit
-
-
Francesco Mani authored
-
- 21 Apr, 2020 1 commit
-
-
Raymond Knopp authored
testing for pucch format 2, 3-11 bits. Configuration works for 2 PRBs, 1 symbol only. Assertion in gNB RX otherwise.
-
- 14 Apr, 2020 2 commits
- 26 Mar, 2020 1 commit
-
-
cig authored
- now the function gets more input arguments but can be used from both UE and gNB - this change was needed because the prach fapi of UE differs from the gNB one
-
- 19 Mar, 2020 1 commit
-
-
Francesco Mani authored
-
- 15 Mar, 2020 1 commit
-
-
Raymond Knopp authored
-
- 11 Mar, 2020 2 commits
- 06 Mar, 2020 1 commit
-
-
Francesco Mani authored
-
- 05 Mar, 2020 1 commit
-
-
Thomas Schlichter authored
As adding PTRS leads to shortening of the coded data, redudandency is removed and the performance decreases on a pure AWGN channel. So PTRS should only be enabled if phase noise is present.
-
- 04 Mar, 2020 2 commits
- 19 Feb, 2020 1 commit
-
-
Raymond Knopp authored
added longer prefix in PRACH symbol zero period for 15/30 kHz SCS. Both gNB and UE processing is modified. prachsim is functional again with new FAPI interfaces.
-
- 16 Feb, 2020 1 commit
-
-
Raymond Knopp authored
added scheduling of PRACH RX procedures in gNB and RU entities. Initialization of prach sequences added to nr_init.c
-
- 10 Feb, 2020 1 commit
-
-
Guido Casati authored
- Updated PRACH procedures and general code formatting - gNB msg1 handling and RAR generation - general bug fixing - formatting - missing headers - RAR handling.
-
- 06 Feb, 2020 1 commit
-
-
Francesco Mani authored
-
- 23 Jan, 2020 1 commit
-
-
Florian Kaltenberger authored
-
- 14 Jan, 2020 1 commit
-
-
Francesco Mani authored
-
- 13 Jan, 2020 1 commit
-
-
Francesco Mani authored
-
- 10 Jan, 2020 1 commit
-
-
Raymond Knopp authored
-
- 03 Jan, 2020 1 commit
-
-
Raymond Knopp authored
-
- 01 Jan, 2020 1 commit
-
-
Raymond Knopp authored
Testing of NR PDCCH/PDSCH with RRC Configuration. added RRC configuration to NR UE. Updates to UE DCI procedures (moved to MAC) and updates to FAPI interfaces for UE. nr_dlsim is functional, added profiling information for gNB TX.
-
- 21 Dec, 2019 1 commit
-
-
Raymond Knopp authored
-
- 18 Dec, 2019 3 commits
-
-
Khalid Ahmed authored
-
Khalid Ahmed authored
-
Khalid Ahmed authored
-
- 11 Dec, 2019 2 commits
- 10 Dec, 2019 1 commit
-
-
Francesco Mani authored
-
- 05 Dec, 2019 2 commits
-
-
Francesco Mani authored
-
Raymond Knopp authored
-
- 04 Dec, 2019 2 commits
-
-
Francesco Mani authored
-
Francesco Mani authored
-
- 27 Nov, 2019 1 commit
-
-
Rakesh authored
-
- 19 Nov, 2019 1 commit
-
-
Raymond Knopp authored
-
- 29 Oct, 2019 1 commit
-
-
Florian Kaltenberger authored
-