From d09366c50328925cf1e38a370584257e0c74d018 Mon Sep 17 00:00:00 2001 From: Thomas Schlichter Date: Tue, 1 Mar 2022 17:39:55 +0100 Subject: [PATCH] NR_UE: correctly scale UL frequency offset (relevant for FDD) --- openair1/PHY/NR_UE_TRANSPORT/nr_ue_rf_helpers.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/openair1/PHY/NR_UE_TRANSPORT/nr_ue_rf_helpers.c b/openair1/PHY/NR_UE_TRANSPORT/nr_ue_rf_helpers.c index 6530dd9512..d3f362b90c 100644 --- a/openair1/PHY/NR_UE_TRANSPORT/nr_ue_rf_helpers.c +++ b/openair1/PHY/NR_UE_TRANSPORT/nr_ue_rf_helpers.c @@ -86,16 +86,17 @@ void nr_rf_card_config_freq(openair0_config_t *openair0_cfg, uint8_t cc_id = 0; PHY_VARS_NR_UE *ue = PHY_vars_UE_g[mod_id][cc_id]; int rf_chain = ue->rf_map.chain; + double freq_scale = (double)(dl_carrier + freq_offset) / dl_carrier; for (int i = rf_chain; i < rf_chain + 4; i++) { if (i < openair0_cfg->rx_num_channels) - openair0_cfg->rx_freq[i + rf_chain] = dl_carrier + freq_offset; + openair0_cfg->rx_freq[i + rf_chain] = dl_carrier * freq_scale; else openair0_cfg->rx_freq[i] = 0.0; if (itx_num_channels) - openair0_cfg->tx_freq[i] = ul_carrier + freq_offset; + openair0_cfg->tx_freq[i] = ul_carrier * freq_scale; else openair0_cfg->tx_freq[i] = 0.0;