An error occurred fetching the project authors.
  1. 22 Sep, 2020 1 commit
  2. 16 Sep, 2020 1 commit
  3. 02 Sep, 2020 1 commit
  4. 27 Aug, 2020 1 commit
    • Parminder Singh's avatar
      Common Phase error estimation and compensation in uplink. · b288eafd
      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
      b288eafd
  5. 25 Aug, 2020 1 commit
  6. 24 Aug, 2020 1 commit
  7. 21 Aug, 2020 1 commit
  8. 19 Aug, 2020 1 commit
  9. 16 Aug, 2020 1 commit
  10. 10 Aug, 2020 1 commit
  11. 06 Aug, 2020 1 commit
  12. 05 Aug, 2020 1 commit
  13. 03 Aug, 2020 1 commit
  14. 27 Jul, 2020 1 commit
  15. 20 Jul, 2020 1 commit
  16. 17 Jul, 2020 1 commit
  17. 09 Jul, 2020 1 commit
  18. 02 Jul, 2020 1 commit
    • cig's avatar
      Fixed some warnings + cleanup · 52e49fd8
      cig authored
      - replaced nr_slot_t with int as it was barely used in the code (also is defined after an lte struct)
      - removed use of phy_frame_config_nr from the UE (another file was created in SCHED_NR_UE, still the
        gNB file is used in some tests file at UE side)
      52e49fd8
  19. 01 Jul, 2020 1 commit
  20. 18 Jun, 2020 4 commits
  21. 14 Jun, 2020 2 commits
  22. 11 Jun, 2020 1 commit
  23. 05 Jun, 2020 1 commit
  24. 04 Jun, 2020 2 commits
  25. 03 Jun, 2020 2 commits
  26. 01 Jun, 2020 1 commit
  27. 28 May, 2020 1 commit
  28. 22 May, 2020 1 commit
  29. 20 May, 2020 1 commit
  30. 13 May, 2020 1 commit
  31. 06 May, 2020 1 commit
  32. 29 Apr, 2020 2 commits
  33. 21 Apr, 2020 1 commit