From 75cd4c79d9bc3b5129f7e7137cdc8974fc0552d4 Mon Sep 17 00:00:00 2001 From: Thomas Schlichter Date: Tue, 9 Feb 2021 18:09:11 +0100 Subject: [PATCH] update tx_sample_advance for 40 MHz and USRP X300 (3/4 sampling) Testing RA with OAI gNB and UE both using X300 via PCIe link indicated a value of 15 was way too small. The correct value for this setup seems to be 65. --- targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp b/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp index ac14633130..61a742af65 100644 --- a/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp +++ b/targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp @@ -1110,7 +1110,7 @@ extern "C" { case 46080000: //openair0_cfg[0].samples_per_packet = 2048; - openair0_cfg[0].tx_sample_advance = 15; + openair0_cfg[0].tx_sample_advance = 65; openair0_cfg[0].tx_bw = 40e6; openair0_cfg[0].rx_bw = 40e6; break;