Specifications

AC75 Hardware Interface Description
Strictly confidential / Preliminary
s
AC75_HD_V00.202 Page 101 of 120 27.04.2006
5.8 Air Interface
Test conditions: All measurements have been performed at T
amb
= 25°C, V
BATT+ nom
= 4.0V.
The reference points used on AC75 are the BATT+ and GND contacts (test points are shown
in
Figure 4).
Table 34: Air Interface
Parameter Min Typ Max Unit
GSM 850 824 849 MHz
E-GSM 900 880 915 MHz
GSM 1800 1710 1785 MHz
Frequency range
Uplink (MS → BTS)
GSM 1900 1850 1910 MHz
GSM 850 869 894 MHz
E-GSM 900 925 960 MHz
GSM 1800 1805 1880 MHz
Frequency range
Downlink (BTS → MS)
GSM 1900 1930 1990 MHz
GSM 850 31 33 35 dBm
E-GSM 900
15
31 33 35 dBm
GSM 1800
16
28 30 32 dBm
RF power @ ARP with 50 load
GSM 1900 28 30 32 dBm
GSM 850 124
E-GSM 900 174
GSM 1800 374
Number of carriers
GSM 1900 299
GSM 850 45 MHz
E-GSM 900 45 MHz
GSM 1800 95 MHz
Duplex spacing
GSM 1900 80 MHz
Carrier spacing 200 kHz
Multiplex, Duplex TDMA / FDMA, FDD
Time slots per TDMA frame 8
Frame duration 4.615 ms
Time slot duration 577 µs
Modulation GMSK
GSM 850 -102 -108 dBm
E-GSM 900 -102 -108 dBm
GSM 1800 -102 -107 dBm
Receiver input sensitivity @ ARP
BER Class II < 2.4% (static input level)
GSM 1900 -102 -107 dBm
15
Power control level PCL 5
16
Power control level PCL 0