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 and LQI

Other Parts Discussed in Thread: CC2530

hi to all,

i have read a lot of posts about this two parameters but i have a lot of doubts.

a)

1)RSSI(d)=Pt-PL(d0)-10nlog(d/d0)+chisigma  where n=exp path lost, chisigma=gaussian variable

2)LQI=(CORR-a) x b

for formula 2) a and b i found that will be calculated in empirically way....but i need to know how!!!!!!!

someone can help me?

b)

i found that 50<LQI<100 why?

c)

another formula for LQI=255x(RSSI+81)/91

why?

d)

in some post i found some persons that write RSSI and LQI are the same thing,the only difference is that RSSI is given in dBm while LQI is a number betwenn 0 and 255

so we must transform RSSI data RAW in LQI value

is that true?

e)

i need to know the macro that make this trasformation,i try to find it witouh results,can anybody post it?????

i search in mac_radio_defs.h file but i have find nothing