Measurements and result display
R&S®FSW-K72/K73
19User Manual 1173.9305.02 ─ 34
No of Pilot Bits: Number of pilot bits of the selected channel
Modulation Type: BTS measurements:
Modulation type of an HSDPA channel. High-speed physical data channels can be
modulated with QPSK, 16 QAM or 64 QAM modulation.
UE measurements: the modulation type of the selected channel. Valid entries are:
●BPSK I for channels on I-branch
●BPSK Q for channels on Q-branch
●NONE for inactive channels
3.1.2 Evaluation methods for code domain analysis
Access: "Overview" > "Display Config"
The captured I/Q data can be evaluated using various different methods without having
to start a new measurement.
The selected evaluation also affects the results of the trace data query (see Chap-
ter 11.9.2, "Measurement results for TRACe<n>[:DATA]? TRACE<n>", on page 251).
Bitstream.......................................................................................................................19
Channel Table............................................................................................................... 20
└Table Configuration.........................................................................................21
Code Domain Power.....................................................................................................22
Code Domain Error Power............................................................................................23
Composite Constellation............................................................................................... 23
Composite EVM............................................................................................................ 24
EVM vs Chip................................................................................................................. 25
Frequency Error vs Slot................................................................................................ 26
Magnitude Error vs Chip............................................................................................... 26
Marker Table................................................................................................................. 27
Peak Code Domain Error..............................................................................................28
Phase Discontinuity vs Slot...........................................................................................28
Phase Error vs Chip......................................................................................................29
Power vs Slot................................................................................................................ 30
Power vs Symbol.......................................................................................................... 31
Result Summary............................................................................................................31
Symbol Constellation.................................................................................................... 32
Symbol EVM................................................................................................................. 32
Symbol Magnitude Error............................................................................................... 33
Symbol Phase Error......................................................................................................33
Bitstream
The "Bitstream" evaluation displays the demodulated bits of a selected channel for a
given slot. Depending on the symbol rate, the number of symbols within a slot can vary
from 12 (min) to 384 (max). For QPSK modulation, a symbol consists of 2 bits (I and
Q). For BPSK modulation, a symbol consists of 1 bit (only I used).
Code domain analysis