From eb18a90b7f2cef8d060ebcb7d420ae9c5375c653 Mon Sep 17 00:00:00 2001 From: Cedric Roux <cedric.roux@eurecom.fr> Date: Wed, 19 Feb 2020 14:37:07 +0100 Subject: [PATCH] bugfix: correct X_u computation for both 839 and 139 cases --- openair1/PHY/NR_TRANSPORT/nr_prach_common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/openair1/PHY/NR_TRANSPORT/nr_prach_common.c b/openair1/PHY/NR_TRANSPORT/nr_prach_common.c index b55501cc84..e881b91b84 100644 --- a/openair1/PHY/NR_TRANSPORT/nr_prach_common.c +++ b/openair1/PHY/NR_TRANSPORT/nr_prach_common.c @@ -157,8 +157,8 @@ void compute_nr_prach_seq(nfapi_nr_config_request_scf_t *config, // for the unrestricted case X_u[0] is the first root indicated by the rootSequenceIndex for (k=0; k<N_ZC; k++) { - // 420 is the multiplicative inverse of 2 (required since ru is exp[j 2\pi n]) - X_u[i][k] = ((uint32_t*)nr_ru)[(((k*(1+(inv_u*k)))%N_ZC)*420)%N_ZC]; + // multiply by inverse of 2 (required since ru is exp[j 2\pi n]) + X_u[i][k] = ((uint32_t*)nr_ru)[(((k*(1+(inv_u*k)))%N_ZC)*nr_ZC_inv[2])%N_ZC]; } } -- 2.26.2