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BLE RSSI

Kotteeswaran Ekambaram
Prodigy 50 points

Hi,

I am trying to calculate distance based on RSSI value. But the RSSI value variations are high as the RSSI value differs significantly even when the sensor device and mobile device are kept at rest.

Please guide me to tackle this issue.

thanks & regards,

Kotteeswaran.E

  • 0
    TI__Guru** 105180 points
    Hello Kotteeswaran,

    Many factors can impact RSSI in an open-air environment. Such factors include, antenna design, desense, RF interference and fading. I suggest doing a internet search for "determine distance from rssi" and review what others have done, specifically with BLE. For example, if you know the transmitting device's TX power, and calibration values related to your receiver, you can compute relative distance to varying degrees of accuracy. However, RSSI alone won't be sufficient.

    Best wishes.