• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 55 subscribers
  • Views 1058 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

RSSI or LQI which one I should prefer ?

Jayakrishnan K B
Prodigy 145 points
Other Parts Discussed in Thread: CC2591, CC2530

Hi,

I am working on a CC2530+CC2591 based Zigbee solution and I am confused about LQI and RSSI values I am getting.

According to the design note below a low value indicates a better link than what a high value does.

http://e2e.ti.com/support/low_power_rf/w/design_notes/calculation-and-usage-of-lqi-and-rssi.aspx

 But during my experiment I found that I was getting a higher LQI values when my modules where closer and it was reducing as I moved them far.

When both the modules where closed I got an LQI value of D9 (using Z-tool) and the RSSI value around -20dBm(using smartRF studio).

And when both the modules where around 300m far I got an LQI value of 4 and an RSSI value of  -83dBm and the packet loss percentage was 3%.

Since the packet loss percentage is as low as 3 percentage I consider it to be a good link but the LQI values are confusing me.  

Please help me on this.

Thanks

JK