Atec Rohde-Schwarz-SMIQ Series - Manual (Page 22)

22 Vector Signal Generator R&S SMIQ – Specifications
Data lists for data fields and TPC field For the enhanced channels, the data fields and the transmit power
control (TPC) field of the slots can be filled from data lists. This
allows the use of externally precoded data or the generation of
long power control profiles for the DUT.
Applications – measurement of UE power control steps
– measurement of UE max. output power
External power control Variation of output power of max. 4 enhanced channels in realtime
via external control line. The power of all active enhanced channels
can be increased or decreased jointly by means of a TTL signal.
Common parameters
Power step 0.25 dB to 30 dB
Power up range 0 dB to 30 dB
Power down range 0 dB to 30 dB
Parameters for each enhanced channel
Start power –60 dB to 0 dB
Power control OFF; UP; DOWN
Graphic display current output power (differential power relative to start power) of
channels with external power control shown by bargraph
Application test of SIR based closed loop power control
Channel coding Coding of up to four enhanced channels in accordance with defini-
tion of reference measurement channels given in TS25.101,
TS25.104 and TS25.141. In addition, AMR speech 12.2 kbps to
TS25.944 and RACH/CPCH (TB size 168 bit or 360 bit, data
PN9 fixed) to TS25.141 are supported.
Common coding scheme and symbol rate for all enhanced channels.
Implemented reference measurement channels – uplink reference measurement channel for
12.2 kbps, 64 kbps, 144 kbps, 384 kbps
– downlink reference measurement channel for
12.2 kbps, 64 kbps, 144 kbps, 384 kbps
Channel coding structure – CRC attachment
– tail bit attachment
– convolutional coding or turbo coding, depending on symbol rate
– 1st interleaving
– radio frame segmentation
– rate matching
– 2nd interleaving
Sequence length of coded signal
4 enhanced channels up to 256 frames (10 ms each)
1 enhanced channel up to 1022 frames (10 ms each)
Applications bit error rate (BER) measurements to TS25.101/104 (radio trans-
mission and reception), eg:
– blocking characteristics
– spurious response
– intermodulation characteristics
block error rate (BLER) measurements to TS25.101/104
(radio transmission and reception), eg:
– demodulation of dedicated channel under static propagation
conditions (in conjunction with R&S SMIQB17)
– demodulation of dedicated channel under multipath fading
propagation conditions (in conjunction with R&S SMIQB14
and -B17)
– test of receiver decoder