3GPP MG
PN: 10580-00234 Rev. V
5-1
Chapter 5 — LTE Signal Analyzer
5-1
Introduction
The Long Term Evolution (LTE) Signal Analyzer offers three measurement options:
•
RF Measurements
The following display types are provided for RF measurements: Channel Spectrum
display, ACLR display, Spectral Emission Mask display, and the RF Summary table.
•
Modulation Measurements
Modulation measurements can be viewed in Power vs Resource Block, Constellation
display, Control Channel Power display, or the Modulation Summary table.
•
Over-The-Air (OTA) Measurements
Over-the-Air measurements include Scanner, Tx Test, eMBMS Test, Coverage
Mapping, and Carrier Aggregation. EMF measurements are available with Option 444.
5-2
General Measurement Setups
Please refer to the User Guide for selecting the LTE Signal Analyzer mode, setting up
frequency, amplitude, and file management. In addition, perform the following LTE specific
setup procedures.
1.
Press the
Setup
main menu key.
2.
Press the
BW
submenu key to open the Select Bandwidth list. Select the desired
Bandwidth with the arrow keys or rotary knob and press
Enter
.
3.
Press the
EVM Mode
submenu key to select either
Auto
or
PBCH Only
. Selecting Auto
measures Physical Downlink Shared Channel (PDSCH) if data is available, otherwise
it measures Physical Broadcast Channel (PBCH), a control channel that carries a
broadcast message. Selecting PBCH Only forces a PBCH measurement.
Note
The Modulation Constellation will show a QPSK constellation when PBCH is being
measured. PBCH Only mode is useful when making measurements over the air
under conditions where the transmitted data uses MIMO.
The instrument also automatically selects PBCH only when OTA measurements
are selected.
PBCH only is also necessary when connecting directly to the transmitter and
MIMO is used, when measuring live traffic and assuming that precoding is used in
that eNodeB.
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Страница 24: ...1 12 Secure Environment Workplace General Information 1 10 PN 10580 00207 Rev E BTS Master UG ...
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Страница 119: ...Anritsu Company 490 Jarvis Drive Morgan Hill CA 95037 2809 P N 10000 00000 Revision Prelim Printed March 2014 ...
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