Simplified link budget for GSM system
Transmitter characteristics
Transmitter power TX antenna gain TX ca!e !oss TX Bod# !oss $ominer !oss Transmitter EIR
Recei*er characteristics
unit W dBm dBi dB dB dB d(m
0 102 0 "2 0 '))
dBi dBm dB dB dB d( d(
%X antenna gain %X sensiti&it# %X $a!e !oss %X Bod# !oss 'i&ersit# gain Total recei*er gain System gain
Margins
Downlink 20 43.0103 17.42531 "4 0 "4 !"#$%!&'
Uplink
'!"#$%!& d(
$o&erage proai!it# (ce!! edge) ,-adow ading std de&iation ,-adow ading argin ndoor penetration !oss Total m argin
0.* / 7.5 0 +#!
2 33.0103 0 0 "2 0 %'#)')%
unit W dBm dBi dB dB dB d(m
17.42531 104 "4 0 3 '")#$"!%
dBi dBm dB dB dB d( d(
Note: Gain com puted e!ow
'!'#$%!& d( 0.* / 7.5 0 +#!
dB dB dB d(
Note: +sua!!# we use ce!! co&erge proai!it# dB dB dB d(
Note: argin computed e!ow
0
,llowed propagation loss
Shadow .ading Margin /cell edge approach0
,ntenna Gain
'$$#-%!& d( d(
Gi&en co&erage proai!it# on ce!! edge () ,-adow ading standard de&iation 1" $!osest 1" in ta!e 6rgument (in&erse o ) Shadow fading m argin
ori8onta! 3dB eam widtori8onta! gain Numer o dipo!es 9ertica! gain (dBd) 9ertica! gain (dBi) Total antenna gain
Range /1kumura23ata path loss model0 $arrier re;uenc# B, antenna -eig-t , antenna -eig-t arameter 6 arameter B arameter $ , antenna gai n unct io ion (! (! ar arge ci t# t#) at- !oss e
1 0
'$%#-%!& d( d(
/5 7.4*37*5 / 7.71513 *.*31513 '+#$"!%'
0.* / dB 0.1 0.1 1.25 +#! d(
degrees dB dB dBd dBi d( d(i
+nit 100 8 25 m 1.5 m 4/.3 33.* 44.* " 0. 0.000*1* 3.57434* 137.3351 dB 1./31/*7 =m 1.52** =m '#!"-5-5 km
1"() 6rgument 0.5 0 0.4 0.25 0.3 0.5 0.22 0.75 0.17 1 0.1 1.25 0.07 1.5 0.04 1.75 0.023 2 0.01 2.25
1
1 0
2
1 0 ) x ( Q 3
1 0
4
1 0
5
1 0 0
0 . 5
1
1 . 5
2 x
2 . 5
3
3 . 5
4