White paper
W705/W705u/W705a
28
February 2009
USSD technical data
Property
WCDMA 1900
NOTE: W705a
WCDMA 2100
Frequency range (MHz)
TX:1850-1910
RX:925-960
TX: 1920
–
1980
RX: 2110
–
2170
Channel spacing
5 MHz with 200 kHz channel
rasters
5 MHz with 200 kHz
channel rasters
Number of channels
277
277
Modulation
QPSK (WCDMA R99)
QPSK/16 QAM (HSDPA)
QPSK (WCDMA R99)
QPSK/16 QAM (HSDPA)
TTI
10 ms (WCDMA R99)
2 ms (HSDPA)
10 ms (WCDMA R99)
2 ms (HSDPA)
TX phase accuracy
Error Vector Magnitude:
<17.5%
Error Vector Magnitude:
<17.5%
Duplex spacing
80 MHz
190 MHz
Frequency stability
Frequency sta/- 0.1
ppm
+/–0.1 ppm
Voltage operation (nominal)
3.6 V
3.6 V
Transmitter RF power output
24 dBm Class 3 (0.25 W
peak)
24 dBm Class 3 (0.25 W
peak)
Transmitter Output impedance
50 ohm
50 ohm
Transmitter spurious emission (according to
specification)
< -36 dBm up to 1 GHz
< -30 dBm over 1 GHz
(according to 3GPP™spec.)
< –36 dBm up to 1 GHz
< –30 dBm over 1 GHz
(according to 3GPP™
spec.)
Receiver RF sensitivity
Better than -104.7 dBm @
12.2 kbps CS voice
Better than –106.7 dBm @
12.2 kbps CS voice
Receiver RX bit error rate
< 0.1%
< 0.1%
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USSD support
GSM Phase 1/2 (cross-phase compatibility)
Mode support
• UI-mode supported
• SAT initiated USSD supported
UI-mode details
• It is possible to scroll the text up and down in USSD messages
• It is possible to highlight embedded numbers and take actions
accordingly