- 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
- updated return function value to -1
- removed static variable for dmrs symbol selection for channel
- Updated sin cos quadrant check conditions
- removed casting from PTRS slope and related calculations
- fixed channel compensation by choosing most recent DMRS symbol ina
slot
- Removed code to find nearest DMRS symbol for channle compensation
- Updated TBS calculation in DLSIM
- Added debug prints in PTRS CPE estimation for DMRS symbol
- Added PTRS extraction and estimation for DL
- Added processing for whole slot wrt PTRS estimates
- DLSIM is updated to used -T flag to enable PTRS
- DMRS compensated signal is further compensated with PTRS estimation
- removed redundant initialisation of variables
- introduced two "RF helpers" function that are replacing shared code in the sync routines
- added a new .c file and updated the cmakelists and .h files
- got rid of global variable fp
- code cleanup, removed redundant and unused code
- removed unused command line options and variables
- grouped command line setting in set_options function
- the band is coming from the SI, therefore a function to get the band is not
necessary
- this solves also the limitations of the get_band algorithm with the NR bands
overlapping in the NR operating bands table (e.g. band 78 and band 48)
- adapted the get_band function: the algorithm is now taking into account
also the UL frequency in order to fetch the proper band (this was failing
before as some NR bands have the same DL band, e.g. band 65 and 66)
- added new bands to the NR table as per TS 38.101 V16.4.0 (2020)
- made the from_nrarfcn function compatible with UL FDD (this function,
used for both DL and UL was previously working with TDD only as it
did not compute properly the frequency for the UL FDD, throwing asserts)
- introduced common functions to get the NR table idx and the duplex mode,
removing repeated code in the process
- removed the unused function to get the uldl offset
- improved some logging
- other minor fixes to the relevant code
- the RU now supports IF equipment with custom FR1 TX/RX frequencies
- this configuration parameter together with the if_freq parameter allows
to set a custom IF RX frequency for the gNB
- if the IF offset is not specified, legacy code applies
- Added PTRS variables in transport UE header file
- Added DMRS inline symbol check function in refsig.h
- Added PTRS estimation and other related structures in defs_nr_UE.h file
Parminder Singh