Page 106 - GuideFWA

IN TER FER EN C E AN ALYSIS C ASE

Param eter Interfering TX Victim R X

System PC S1900 DECT
D evice Term inal Term inal

Frequency D ata

1850-1990 M H z Frequency Block C (low erpart) 1910 -1930 M H z
W orking Frequency (M H z)
N um berofguard channels 1909,800 1912,896
G uard Band betw een channeledges (KH z)
TX/R X frequency O ffset(KH z) 00

2132

3096,0

System D ata

TX Pow er(dBm ) 33

R X sensitivity (dBm ) **See N ote ** -76
10
Specific C /Ivalue forR eceiverVictim System (dB)

Antenna and FeederD ata

Antenna heigth (m ) 1,5 8,0
Antenna G ain (dBi) 0,0 10,0
Antenna H orizontalBeam w idth (º) om ni 60
Antenna VerticalBeam w idth (º) om ni 60
Antenna D ow ntilt(º) 0
2

FeederLosses (dB) 0,0 1,0

O therC alculation Inputs

Im provem enton TX m ask specification (dB) 0,0
Allow ed R x D esensitization (dB) 1,0

N ote:This is the R eceiverSensitivity w ith R ayleigh Fading (10 dB )

R ESU LTS

R equired distances forD esentization equalto 1 dB : R eq.distance (m )

W hen both TX and R X are on R X and TX antenna 3dB-beam w idth 32,8
W hen only R X is on TX antenna 3dB-beam w idth 0,3
W hen only TX is on R X antenna 3dB-beam w idth notapplicable
W hen both TX and R X are outofR X and TX antenna 3dB-beam w idth notapplicable

R equired distances w hen TX and R X antennae are on-beam ,fordifferentD esentization:

3,00 D esentization (dB ) R eq.D istance (m )
2,50
2,00 1,0 32,8
1,50
1,00 0,25 71,8
0,50
Desentization (dB)0,00 0,50 48,9

0,0 0,75 39,4 ###
1,00 32,8 ###

1,25 28,3 ###

1,50 24,8 ###

1,75 22,1 ###

2,00 19,7 ###

2,25 17,3 ###

20,0 40,0 60,0 80,0 2,50 15,2 ###
2,75 13,2 ###
Required Distance (m)
3,00 10,6 ###

92