User Manual

Systemdesign
32
Table 44 Example WCDMA link budget
WCDMA LINK BUDGET
RECEIVER SENSITIVITY AND NOISE
Noisefloor ‐108.2 dBm 
ReceiverNF 6.0 dB 
RXnoisepower ‐102.2 dBm 
Interfer encemargin 3.0 dB 
RXinterferencepower ‐102.2 dBm 
Noiseplusinterferencepower ‐99.2 dBm 
Requestedbitrate 64.0 kbit Videocall=64.voice=12.2
Grossbitrate 3840.0 kbit 
Processgain 17.8 dB 
RequiredEb/No 5.0 dB 
Fastfadingmargin 4.0 dB 
Receiversensitivity ‐107.9 dBm 
DOWNLINK CALCULATION
OutputpowerDASremoteunit 30.0 dBm 
Numberofcarriers 1.0 pcs
Thisgivesthepercarrier
power
Powerpercarrier 30.0 dBm 
SplitlossfromRUporttolast
antenna
6.0 dB
Cablelosses 4.0 dB 
DASantennagain 3.0 dB 
EIRP 23.0 dBm 
MSAntennagain 5.0 
MSBodyloss 3.0 
MSMinimumlevel ‐109.9 dBm 
Allowedpathloss 137.9 dB 
UPLINK CALCULATION
OutputpowerofMS 21 dBm Maximumpower
AntennagainMS 5.0 dB 
BodylossMS 3.0 dB 
EIRPMS 23.0 dBm 
Uplinknetgain ‐10 dB 
SensitivityatRUport ‐117.9 dBm 
SplitlossfromantennatoRU 6.0 dB 
Cablelossesfromantennato
RU
4.0 dB 
DASantennagain 3.0 dB 
Antennasensitivity ‐110.9 dBm 
Allowedpathlossuplink 133.9 dB 
Balancedownlink‐uplink 4.0  