Atec Rohde-Schwarz-SMIQ Series - Manual (Page 14)

14 Vector Signal Generator R&S SMIQ – Specifications
Digital standard IS-95 CDMA with option R&S SMIQB42
Frame structure
Burst types
Burst on/off ratio
Burst rise/fall time
Slot attenuation, selectable
1 to 8 slots user-definable
TCH (32 kbit and 16 kbit channel), SYNC, VOX, ALL DATA
>80 dB
corresponding to 2 symbols,
<13 µs
0 dB to 70 dB
Internal modulation data PRBS, 2 9 −1, 2 11 −1, 2 15 −1, 2 16 −1, 2 20 −1, 2 21 −1, 2 23 −1,
programmable data memory
External serial modulation data asynchronous via RS232 interface (SERDATA)
Error vector magnitude, rms <1.2%, 0.4% typ.
Adjacent-channel power, typ. values, without power
ramping)
Offset 600 kHz
Offset 900 kHz −74 dBc
−76 dBc
Modulation and ACP specifications apply at the respective standard frequency ranges and at levels
≤8 dBm PEP with R&S SMIQ02B/03B
≤5 dBm PEP with R&S SMIQ04B/06B
To TIA standard IS-95A and J-STD-008
Frequency
Standard
Range 824 MHz to 894 MHz, 1850 MHz to 2000 MHz
same as R&S SMIQ
Modulation QPSK, OQPSK
Chip rate
Standard
Range
Reverse link coded 1.2288 MHz
0.1 Mcps to 7 Mcps
0.1 Mcps to 1.3 Mcps
Sequence length
Forward link
Reverse link
Reverse link coded
1 superframe (80 ms)
1 superframe (80 ms)
if user-definable data lists are used:
calculation in real time, ie unlimited sequence length
calculation in real time, ie unlimited sequence length
Baseband filter
Standard
Other filters IS-95 with or without equalizer
√ cos (α=0.2 to 0.7), cos (α=0.2 to 0.7)
Forward link, mode 18
Number of code channels
Walsh code selectable
Code channel power 1 to 18
0 to 63
0.0 dB to
−30 dB, 4 user-definable levels
Forward link, mode 64
Number of code channels
Code channel power 1 to 64
0.0 dB to
−30 dB, 2 user-definable levels
Reverse link full-rate mode, half-rate mode with random power gating
Reverse link coded incl. frame quality indicator, convolutional encoder, block
interleaver
traffic channel, 9600/4800/2400/1200 bps
traffic channel, 14400/7200/3600/1800 bps
access channel, 4800 bps