Power Design of the Up-link and Down-linkfor GSM System

BTS : EIRP=57.26 dbm

MS : minimum acceptable signal strength=-89 dbm

the maximum transmission loss of down-link=57.26-(-89)=146.26 db

MS : EIRP=20.01 dbm

BTS : minimum acceptable signal strength=-123.5 dbm

the maximum transmission loss of up-link=20.01-(-123.5)=143.51 db

BTS

MS

41.76 dbm

38.76 dbm

cable loss

=-3 db

(BTS EIRP)

57.26 dbm

(532 w)

antenna

gain=18.5

dbi (sector)

* omni(11dbi)

-146.26 db

-89 dbm

-4 db

(handover

margin)

-4db

(shadow

margin)

-2 dbi

(MS

antenna

gain)

-3db

(body

loss)

BTS TX power

=15 w

-93 dbm

-97 dbm

-99 dbm

-102 dbm

MS RX sensitivity

BTS

MS

-104 dbm

-105 dbm

diversity

gain

=4db

-123.5 dbm

antenna

gain=18.5

dbi

-143.51 db

(MS EIRP)

20.01 dbm

-4 db

(handover

margin)

-4db

(shadow

margin)

-2 dbi

(MS

antenna

gain)

-3db

(body

loss)

BTS RX sensitivity

24.01 dbm

28.01 dbm

30.01 dbm

33.01 dbm

MS TX power

=2w

cable

loss

=-3 db

-101 dbm

• Down-link :

• Up-link :

前一張投影片

下一張投影片

回到第一張投影片

檢視圖形版本