Technical information

Site technical documentation myc3-2,myc3-2j
CHAPTER 2 - DESCRIPTION - OPERATION
2.1 REMINDERS ABOUT THE GENERAL CHARACTERISTICS OF GSM 900, DCS 1800 and PCS
1900
Table 1 below gives the characteristics of the radio interface for the GSM 900, DCS 1800 and
PCS 1900 systems :
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Frequency Band (MHz)
880 - 915
925 - 960
1710 - 1785
1805 - 1880
Number of time intervals per TDMA
frame
8
Width 2 x W simplex (MHz) 2 x 25 2 x 75
Duplex spacing (MHz) 45 95
Modulation speed (kbit/s) 271
Speech throughput (kbit/s) 13 (5,6)
Maximum data throughput (kbit/s)
12
Multiple access Multiplexage fréquentiel et temporel /
duplexage fréquentiel
Cell radius (km) 0,3 à 30 0,1 à 4
SAGEM terminal power (W) 2 1
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Table 2 shows powers as a function of the network:
*60 '&6
Class
number
Maximum
nominal power
(W)
Allowable
interval (W)
Maximum
nominal
power (W)
Allowable
interval (W)
1 - - 1 [0,63 ; 1,6]
2 8 [5,0 ; 12,7] 0,25 [0,16 ; 0,4]
3 5 [3,2 ; 7,9] 4 [2,5 ; 6,3]
4 2 [1,3 ; 3,2]
5 0,8 [0,5 ; 1,3]
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Table 3 shows power classes :
Class 1 Class 2 Class 3 Class 4 Class 5
GSM 900 43 dBm 39 dBm 37 dBm 33 dBm 29 dBm
DCS 1800 30 dBm 24 dBm 36 dBm - -
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Contents REF MTB DTS 1- Indice D - November 10 2005 Page 2-1