Whats correct? A low or a high LQI value is better?

Marcell Thewes

Other Parts Discussed in Thread: CC2500, CC2530

Hello,

in my mind there is a difference between the datasheet of the CC1110 SoC and in this forum. In the datasheet is said that a high LQI value indicates a better link quality (chapter 13.10.8) and in this forum is said that a low LQI value indicates a better link ( http://e2e.ti.com/support/low_power_rf/w/design_notes/calculation-and-usage-of-lqi-and-rssi.aspx ).

Whats the correct one of these two?

Thanks for help.

over 13 years ago

0 Sverre over 13 years ago

TI__Mastermind 39860 points

CC1110 datasheet is wrong and needs to be corrected

Correct is: A low value indicates a better link than what a high value does

0 Joseph Orender over 13 years ago in reply to Sverre

Intellectual 260 points

Is this true for all the old chipcon datasheets? For example, the CC2500 explains that low LQI numbers mean low link quality while high values mean good link quality.

"LQI is best used as a relative measurement of the link quality (a high value indicates a better link than what a low value does), since the value is dependent on the modulation format."

0 emr spl over 12 years ago in reply to Joseph Orender

Intellectual 405 points

Hi Dears,

I have problem with getting LQI values? Do you have any idea how can I obtain it? (for CC2530)

I have searched on hal_rf and basic_rf libraries, but I cannot find anything.

Regards,

Emrah

Sub-1 GHz

Sub-1 GHz forum

Whats correct? A low or a high LQI value is better?