Reference NRS Port (NB-IoT)
Cleared
Cleared or Selected and Port 2000, Port 2001 depending on the Number of NRS Ports
determines which NRS/Rx path to use for synchronization and initial equalization and to show on certain non-MIMO Multiple Input, Multiple Output: A physical layer (PHY) configuration in which both transmitter and receiver use multiple antennas. traces (listed below).
When is cleared, the demodulator searches the reference measurement channel for the strongest NRS antenna port signal and uses that NRS port as the reference.
When is selected and set to , antenna port (x) is used as the reference.
NRS metrics for other NRS/Rx paths are expressed relative to the NRS metrics for the reference NRS/Rx path. For example, when NRS port 0 is selected, the NRS0/Rx0 section of the MIMO Info Table will show 0 dB for and the other NRS/Rx paths' will be expressed in dB relative to this 0 dB point.
The parameter determines which NRS/Rx path results are shown on the following traces:
- Common Tracking Error
- Eq Chan Freq Resp
- Eq Chan Freq Resp Diff
- Eq Impulse Response
- Inst Eq Chan Freq Resp
- Inst Eq Chan Freq Resp Diff
To view information for all detected NRS antenna ports, use the MIMO traces ().
See Also
