
539Implementation and Performance Analysis
After the received power using (19.1) and the noise power using (19.5) are obtained, the receiver i
determines the SINR for signals transmitted from node j according to the following formula:
SINR
mW mW
i
r
k
kj
=
+
∈
()
()
,
Φ
(19.11)
where
is the received power in mW at node i of signals transmitted from node x
Φ
i
is the set of the communication units from which the received power at node i is greater than
or equal to the data reception sensitivity threshold
Once the SINR is computed, an associated BER is determined by looking up the QAM-based BER
table (i.e., “qam64.ber”) given in Qua