CC2420: Distance Estimation model using RSSI

David__

Genius 3585 points

Part Number: CC2420

https://iotandelectronics.wordpress.com/2016/10/07/how-to-calculate-distance-from-the-rssi-value-of-the-ble-beacon/

I saw articles where it mentions

Is there a documentation or an app note from TI where it addresses the "distance estimation model"?

over 4 years ago

0 FI over 4 years ago

TI__Mastermind 20210 points

Hi,

You can look at the range estimator excel sheet here and app note here:

http://www.ti.com/lit/an/swra479a/swra479a.pdf

http://www.ti.com/tool/RF-RANGE-ESTIMATOR

regards,

0 David__ over 4 years ago in reply to FI

Genius 3585 points

Thanks for your reply.

Is estimating the range and the relative distance the same?

0 FI over 4 years ago in reply to David__

TI__Mastermind 20210 points

Hi,

Yes,in this context range and relative distance is same.

In general, from a communication point of view, range is determined when packets are received without errors at a node from a distant node. In some situations, depending on the RF environment, you may see good RSSI value at receiving node but packet errors in excess of what is expected.

Regards

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CC2420: Distance Estimation model using RSSI