Files
openairinterface5g/nfapi
Sakthivel Velumani 7729bab5af feature: Estimate CFO from CSI-RS tracking signal
TRS resources if configured by gnb, is present in two consequtive slots
and two symbols per slot. LS estimates from the first symbol is saved
and in second symbol frequency offset and time offset is estimated. The
estimated FO is saved in UE global structure which is used in the last
TRS slot. If the FO is above a threshold, the radio's center frequency
is adjusted.

Time offset is estimated but not used because time is already tracked
using PBCH DMRS.

Signed-off-by: Sakthivel Velumani <s.velumani@northeastern.edu>
2026-07-09 16:21:51 +00:00
..
2021-02-12 16:36:58 +05:30
2018-01-15 15:24:50 +01:00

This directory contains the NFAPI code.

It comes in two parts:

1 - open-nFAPI

    This is a clone of the github repository
    (https://github.com/cisco/open-nFAPI,
     commit b3bc579b1697eab829d5d8a2de59c93a61b88fa4).
    The patch open-nfapi.oai.patch has then been applied.

2 - oai_integration

    This is code written by David Price from Cisco to integrate
    open-nFAPI into OpenAirInterface.