Hi ! Yes we are in really short distances ( 1-7 m if I remember correctly) And yes it seemed a bit strange to us So we did 2 others experiments recording LQI and RSSI in 2 differents environnements (inside and outside) on a range of ~ 1 to 50 m. And the RSSI seemed better in this experiment.
Mathieu On 7/6/07, Philip Levis <[EMAIL PROTECTED]> wrote:
On Jul 6, 2007, at 4:09 AM, Van der Haegen Mathieu wrote: > I'd like to add that RSSI doesn't seem really correlated with > distance in the experiments we did with our sensors nodes in an > inside environnement with distances going from 1 to 10 meters. > > Lqi seem to be more correlated with distance in the same experiment > > I can send you our paper about this if you are interested > This seems strange, unless you were in a very short distance range; the CC2420's LQI is the soft chip decision coefficients, and so is directly a result of the SNR (and therefore the RSSI). Your assertion would only make sense if your links were all in the grey region of intermediate link quality, in which LQI varies. Phil
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