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  1. 16 Oct, 2020 1 commit
  2. 06 Oct, 2020 1 commit
  3. 02 Oct, 2020 1 commit
  4. 01 Oct, 2020 1 commit
  5. 24 Sep, 2020 1 commit
  6. 22 Sep, 2020 1 commit
  7. 21 Sep, 2020 1 commit
  8. 16 Sep, 2020 2 commits
  9. 08 Sep, 2020 1 commit
  10. 02 Sep, 2020 1 commit
  11. 27 Aug, 2020 3 commits
    • Sakthi's avatar
      fixing nr-softmodem · 1fc73ba7
      Sakthi authored
      1fc73ba7
    • Sakthivel Velumani's avatar
      bugfixes · 3e3af2c1
      Sakthivel Velumani authored
      3e3af2c1
    • 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
  12. 25 Aug, 2020 1 commit
  13. 24 Aug, 2020 1 commit
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  18. 10 Aug, 2020 2 commits
  19. 06 Aug, 2020 2 commits
  20. 05 Aug, 2020 1 commit
  21. 03 Aug, 2020 1 commit
  22. 27 Jul, 2020 1 commit
  23. 20 Jul, 2020 1 commit
  24. 17 Jul, 2020 1 commit
  25. 11 Jul, 2020 1 commit
  26. 09 Jul, 2020 1 commit
  27. 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
  28. 01 Jul, 2020 1 commit
  29. 18 Jun, 2020 4 commits
  30. 14 Jun, 2020 2 commits
  31. 11 Jun, 2020 1 commit