Cedric Roux
9e4f700aae
With the new threading architecture of the UE dlsim (and others) does not work properly anymore. When looking at the scope, you see a difference in PDSCH LLR display. The end is always 0 where in the current develop branch (tag 2017.w25) it's not. This commit attempts to fix it. We still don't have the same behavior as in 2017.w25. I disabled channel simulation (so that UE RX = eNB TX) and I have one error where in 2017.w25 I have zero. For example, here comes the output of a run of "./dlsim": **********************SNR = 0.000000 dB (tx_lev 51.000000)************************** Errors (1(0)/1000 0/1 0/0 0/0), Pe = (1.000000e-03,0.000000e+00,-nan,-nan), dci_errors 0/1001, Pe = 0.000000e+00 => effective rate 99.900100, normalized delay 0.001472 (1.001000) And in 2017.w25 we have (with the same hack to disable channel simulation): **********************SNR = 0.000000 dB (tx_lev 51.000000)************************** Errors (0(0)/1000 0/0 0/0 0/0), Pe = (0.000000e+00,-nan,-nan,-nan), dci_errors 0/1000, Pe = 0.000000e+00 => effective rate 100.000000, normalized delay 0.001471 (1.000000) There may be a problem somewhere. Or there was one before and we should have had one error and the new UE architecture fixed things and now it's as it has to be. Hard to say at this point... When looking at the scope we quickly see some zeros for the PDSCH LLR, at the begining this time, not at the end. This is just when the GUI appears and then all is fine, so this seems to be for the first frame only. In 2017.w25 this does not happen.
This directory contains files related to initialization of variables/structures init_top.c : initialize top-level variables and signal buffers, FFT twiddle factors, etc. lte_init.c : LTE specific initlization routines (DLSCH/ULSCH signal buffers for RX, data buffers for TX, etc.) lte_param_init.c: used only in unitary simulations. initializes the global variables eNB and UE. lte_parms.c: contains init_frame_parms to initialize frame parameters structure