the averaging is not done considering the first 8 incoming symbols, because they are used to syncronize receiver decoder. After this stage the RSSI is done using pilot symbols or specific frame field at data link layer. According to your procotol, for example 802.15.4 or 802.11 you have to look at the standard format of the message at MAC or datalink layer. But it does not matter on what are the symbols considered for RSSI measurements, since correlation and multipath fading effects (even if they are partially avoided by DSS coding) affect all the symbols of the frame. So, considering the first 8 symbols, the last, or whatever you want, is not so important.
for LQI you can look at the folowing link http://www.merl.com/projects/zigbeenwk/ _______________________________________________ Tinyos-help mailing list [email protected] https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
