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  1. 09 Dec, 2020 1 commit
  2. 20 Nov, 2020 1 commit
  3. 09 Nov, 2020 1 commit
    • Sakthivel Velumani's avatar
      BG selection bug fix · 66323e0b
      Sakthivel Velumani authored
      The BG was set to its default for rounds > 0. This is now fixed by adding it to harq structure.
      Also a fix for wrong I_lbrm set in dlsch decoding.
      66323e0b
  4. 05 Nov, 2020 1 commit
    • Parminder Singh's avatar
      Updated UL ptrs processing wrt DL · c9523b88
      Parminder Singh authored
      - Most DL code is reused for Ul also to reduce code duplication
      - Common CPE calculation function is used for error estimation
      - Common slot processing function is used for inter/extrapolation
      - Removed old implementation dedicated to UL
      c9523b88
  5. 03 Sep, 2020 1 commit
  6. 02 Sep, 2020 2 commits
  7. 31 Aug, 2020 1 commit
  8. 28 Aug, 2020 1 commit
  9. 27 Aug, 2020 2 commits
    • Sakthivel Velumani's avatar
      fixed thread init; ulsim runs fine · 57dec19a
      Sakthivel Velumani authored
      57dec19a
    • 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
  10. 26 Aug, 2020 2 commits
  11. 19 Aug, 2020 2 commits
  12. 16 Aug, 2020 1 commit
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  22. 31 Mar, 2020 1 commit
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  28. 16 Feb, 2020 1 commit
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  30. 10 Feb, 2020 1 commit
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  32. 15 Jan, 2020 1 commit