TY - GEN
T1 - New techniques for the calculation of the average SIR and the outage probability of the uplink of CDMA systems
AU - Jugl, Enrico
AU - Boche, Holger
PY - 2000
Y1 - 2000
N2 - New techniques for the calculation of the average signal-to-interference ratio (SIR) and the outage probability of the uplink of a single cell CDMA based mobile communications system are introduced. We show the differences between the often employed lower bound on the average SIR and the exact value of the average SIR. These differences are significant if the variance of the SIR gets higher which will affect the outage probability. A high signal-to-noise ratio, a low voice activity factor and a high grade of imperfection of the power control system cause a higher variance of the SIR. These effect is emphasized especially if there is a few number of subscribers. Usually, in the literature the capacity of such CDMA based mobile systems is often calculated by employing a lower bound on the average SIR. Generally, our basic approach shows that this is not possible.
AB - New techniques for the calculation of the average signal-to-interference ratio (SIR) and the outage probability of the uplink of a single cell CDMA based mobile communications system are introduced. We show the differences between the often employed lower bound on the average SIR and the exact value of the average SIR. These differences are significant if the variance of the SIR gets higher which will affect the outage probability. A high signal-to-noise ratio, a low voice activity factor and a high grade of imperfection of the power control system cause a higher variance of the SIR. These effect is emphasized especially if there is a few number of subscribers. Usually, in the literature the capacity of such CDMA based mobile systems is often calculated by employing a lower bound on the average SIR. Generally, our basic approach shows that this is not possible.
UR - http://www.scopus.com/inward/record.url?scp=0034590732&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0034590732
SN - 0780365968
SN - 9780780365964
T3 - 2000 IEEE Wireless Communications and Networking Conference
SP - 1477
EP - 1481
BT - 2000 IEEE Wireless Communications and Networking Conference
T2 - 2000 IEEE Wireless Communications and Networking Conference
Y2 - 23 September 2000 through 28 September 2000
ER -