Sensitivity

[Bayelllka]

Hi xianjun, can you tell me how you measured the sensitivity, as my connection is lost at 85dBm value

how to reach these values:
Performance (best case: aggregation/AMPDU on):
iperf: TCP 40~50Mbps; UDP 50Mbps
EVM -38dB; MCS0 sensitivity -92dBm; MCS7 -73dBm. (FMCOMMS2 2.4GHz; cable and OTA test)

[HavingaThijs]

The connection is lost at -85dBm because by default the receiver won't react to signals with a power lower than that:

openwifi/driver/hw_def.h

Line 240 in 5e42d75

#define OPENOFDM_RX_RSSI_DBM_TH_DEFAULT (-85) //-85 will remove lots of false alarm. the best openwifi reported sensitivity is like -90/-92 (set it manually if conductive test with wifi tester)

You can decrease this threshold for sensitivity measurements, see: https://github.com/open-sdr/openwifi/blob/master/doc/app_notes/frequent_trick.md#receiver-sensitivity-control.