Keysight N9075A Measurement application Datasheet

Keysight Technologies
Mobile WiMAX™ X-Series
Measurement Application
N9075A & W9075A
Technical Overview
Introduction
–– Mobile WiMAX TM RF transmitter measurements
–– Single-channel matrix A modulation analysis and pilot-based matrix B (wave 2) analysis
–– One-button tests with pass/fail limits per Mobile WiMAX standard
–– Hardkey/softkey manual user interface and SCPI remote user interface
–– Built-in context sensitive help
–– Transportable license between X-Series signal analyzers
03 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Mobile WiMAX Measurement Application
The Mobile WiMAX measurement
application transforms the X-Series
signal analyzers into standard-based
Mobile WiMAX transmitter testers by
adding fast one-button power and
modulation measurements to help
you design, evaluate, and manufacture your Mobile WiMAX devices,
based on IEEE 802.16e-2005 and
WiBro. When the Keysight Technologies, Inc. N9030A PXA or N9020A
MXA signal analyzer has optional
baseband IQ inputs, Option BBA,
each of the RF and analog baseband
IQ signals of Mobile WiMAX can be
measured to compare signal quality.
The Mobile WiMAX measurement
application is just one in a common
library of more than 25 measurement applications in the Keysight
X-Series. The Keysight X-Series is
an evolutionary approach to signal
analysis that spans instrumentation,
measurements and software. The
X-Series analyzers, with upgradeable
CPU, memory, disk drives, and I/O
ports, enable you to keep your test
assets current and extend instrument
longevity. Proven algorithms, 100%
code-compatibility, and a common UI
across the X-Series create a consistent measurement framework for signal analysis that ensures repeatable
results and measurement integrity
so you can leverage your test system
software through all phases of product development. In addition to fixed,
perpetual licenses for our X-Series
measurement applications, we also
offer transportable licenses which
can increase the value of your investment by allowing to you transport
the application to multiple X-Series
analyzers.
Figure 1. Single-Input pilot-based EVM measurement of matrix B signal.
Try Before You Buy!
Free 30-day trials of X-Series measurement applications provide unrestricted use of each application’s features and functionality on your X-Series
analyzer. Redeem a trial license online today:
www.keysight.com/find/X-Series_trial
04 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Mobile WiMAX Overview
The IEEE 802.16e-2005 standard,
often referred to as Mobile WiMAX,
defines the physical layer (PHY) and
medium access control (MAC) protocol for products that extend broadband wireless access (BWA) from the
local area network (LAN) to the metropolitan area network (MAN). The
standard contains specifications for
licensed and unlicensed BWA operating between 2 and 11 GHz. The term
OFDMA used to describe this new
technology means orthogonal frequency division multiple access and it
distinguishes the system from OFDM
technologies such as Fixed WiMAX or
802.11 WLAN. The standard includes
an OFDMA PHY layer with sub-channelization that allows the time and
frequency resources to be dynamically allocated among multiple users
across the downlink (DL) and uplink
(UL) sub-frames. It uses a combination of TDD and OFDMA for downlink
and uplink signaling and multiple user
access. The unique features within
the TDD/OFDMA frame provide
frequency diversity, frequency reuse,
and cell segmentation which improve
the performance against fading and
inter-cell interference.
For data transmission the standard
defines a set of adaptive modulation
and coding rate configurations that
can be used to trade off data rate
for system robustness under various
wireless propagation and interfer-
ence conditions. When the radio link
quality is good, the WiMAX system
can use a higher-order modulation
scheme (more bits/symbol) that will
result in more system capacity. When
link conditions are poor due to problems such as signal fading or interference, the WiMAX system can change
to a lower modulation scheme to
maintain an acceptable radio link
margin. The allowed modulation
types are binary phase shift keying
(BPSK), quadrature phase shift keying (QPSK), 16 quadrature amplitude
modulation (16QAM), and 64QAM.
The WiMAX ForumTM is comprised
of industry experts whose charter is
to bring the IEEE 802.16 standard to
the marketplace and to create the
process for certification and inter-operability between equipment vendors.
The WiMAX Forum tests operational
performance based on the standard
through the use of radio and protocol conformance test documentation. Subsets of system features are
known as profiles, which specify the
mandatory and optional features
from the 802.16 standard required for
baseline functionality and interoperability. The choice of profiles has
been driven by spectrum availability,
regulatory constraints, and market
demand. The WiMAX Forum specifies a series of protocol and radio
conformance tests (RCT) for compliance and interoperability between
various equipment manufacturers.
Certification test houses, such as
AT4 Wireless in Spain and Telecommunications Technology Association
(TTA) in Korea, were among the first
to be approved by the WiMAX Forum
to provide conformance testing to the
WiMAX profile specifications.
In order to support increased range,
link reliability, and throughput,
several advanced features are supported in wave 2. These include DL/
UL adaptive modulation and coding
(DL/UL AMC zones), beamforming,
space time coding (STC) or matrix A,
2x2 MIMO with vertical encoding or
matrix B, and collaborative spatial
multiplexing-uplink (CSM). The use
of 2 antennas for transmission and
1 for reception gives the notation
2x1, and the use of 2 antennas for
transmission and 2 for reception
gives the notation 2x2. Matrix A and
matrix B zones may be transmitted
by a base station with two transmit
antennas. In the downlink subframe,
the preamble is followed by the first
zone–a mandatory PUSC zone that
contains the FCH, the DL-MAP, and
the UL-MAP. The preamble and first
zone are transmitted only by antenna
0. Antenna 1 is generally expected
to be inactive during this time, but
becomes active with the first matrix A
or matrix B zone in the subframe.
05 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
RF Transmitter Tests
The X-Series signal analyzers along
with the Mobile WiMAX measurement
application, perform transmitter
measurements on BS and MS devices
in time, frequency and modulation
domains. Mobile WiMAX signals with
zone types PUSC, FUSC, OPUSC,
OFUSC, and AMC can be analyzed.
Additionally, modulation analysis can
be done on matrix A signals and pilotbased modulation analysis can be
done using a single input on matrix B
signals.
Standard-based RF
transmitter tests
The RF transmitter test and air interface requirements for product certification of base stations and mobile
devices by the WiMAX Forum are defined in the WiMAX Forum Mobile Radio Conformance Test and additional
requirements for mobile stations are
defined in the WiMAX Forum Mobile
Radio Requirement Testing. Table 2
shows the required base station RF
transmitter tests along with the corresponding measurement applications. Note some MS tests require the
use of a base station emulator (BSE)
and some BS tests require the use of
a mobile station emulator (MSE). This
aspect is not included in the tables.
Table 1. Required mobile station transmitter measurements and the corresponding measurements in
N/W9075A and 89601B-B7Y.
RCT
test #
Transmitter test
N/W9075A 802.16
OFDMA measurement
(WiMAX/WiBro)
89601B-B7Y
89601B for mobile
and fixed WiMAX
MS-12.1
MS transmitter
modulation and coding,
cyclic prefix and frame
duration timing
Modulation analysis
EVM
MS-13.1
MS transmit ranging
support
Transmit power
Can be performed
using band power
marker
MS-15.1
MS transmit power
dynamic range and
relative step accuracy
Channel power
Can be performed
using band power
marker
MS-16.1
MS transmit power
control support
Channel power
Can be performed
using band power
marker
MS-17.1
MS transmitter spectral
flatness
Modulation analysis
EVM
MS-18.1
MS transmitter relative
constellation error
Modulation analysis
EVM
MS-19.1
MS transmit
synchronization
Modulation analysis
EVM
MS-20.1
MS transmit/receive
switching gap
Modulation analysis
(PER not included)
EVM
(PER not included)
MS-24.2
MS transmit collaborative
MIMO
Modulation analysis
EVM
MS-25.2
MS transmit beamforming Subchannel rotation
support
on/off analysis
supported (PER not
included)
EVM
(PER not included)
Choosing Between X-Series Applications and 89600 VSA Software
X-Series measurement applications provide embedded format-specific, one-button measurements for X-Series
analyzers. With fast measurement speed, SCPI programmability, pass/fail testing and simplicity of operation, these
applications are ideally suited for design verification and manufacturing. 89600 VSA software is a comprehensive
set of tools for demodulation and vector signal analysis. These tools enable you to explore virtually every facet of a
signal and optimize your most advanced designs. Use the 89600 VSA software with a variety of Keysight hardware
platforms to pinpoint the answers to signal problems in R&D.
www.keysight.com/find/89600
06 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
RF Transmitter Tests (continued)
Table 2. Required mobile station transmitter measurements and the corresponding measurements in N/W9075A per WiMAX Forum Mobile Radio Requirement Testing Draft-T25-005-R010v03-B.
RCT test #
Transmitter test
Band class
Measurement/support in
N/W9075A
2.1.1.2.1
MS transmitter spectral mask
1.B
SEM measurement per tables 6, 7 of 2.1.1.2.1.6
2.1.1.2.2
MS transmitter spurious emission (conducted)
1.B
Spurious emission per procedure 2.1.1.2.2.6
2.1.1.3.1
MS transmitter spectral mask
3.A
SEM measurement per tables 16, 17 of 2.1.3.1.1.6
2.1.3.1.2
MS transmitter spurious emission (conducted)
3.A
Spurious emission per procedure 2.1.3.1.2.6.1,
2.1.3.1.2.6.2, and 2.1.3.1.2.6.3
2.1.5.1.1
MS transmitter spectral mask
5.A
SEM measurement per tables 38, 39, 40 of 2.1.5.1.5
2.1.1.2.2
MS transmitter spurious emission (conducted)
5.A
Spurious emission per procedure 2.1.5.2.6
Table 3. Required base station transmitter measurements and the corresponding measurements in N/W9075A and 89600 VSA software per WiMAX
Forum Mobile Radio Conformance Tests Release 1.0 Revision 2.1.0.
RCT test #
Transmitter test
N/W9075A 802.16
OFDMA measurement (WiMAX/
WiBro)
89601B-B7Y
89601B for mobile and fixed
WiMAX
BS-07.1
BS transmitter modulation and coding
Modulation analysis
EVM
BS-08.1
BS transmitter cyclic prefix, symbol timing,
and frame duration timing
Modulation analysis
EVM
BS-09.1
BS transmit preambles
Modulation analysis
EVM
BS-10.1
BS transmitter power range
Channel power
Can be performed using band
power markers
BS-11.1
BS transmitter spectral flatness
Modulation analysis
EVM
BS-12.1
BS transmitter relative constellation error
Modulation analysis
EVM
BS-13.1
BS synchronization
Modulation analysis
EVM
BS-16.1
BS receive/transmit switching gaps
Modulation analysis
(PER not included)
EVM
(PER not included)
BS-17.2
BS AMC receive and transmit operation
Modulation analysis
EVM
BS-19.2
BS transmit MIMO processing
Modulation analysis
(PER not included)
EVM
(PER not included)
BS-20.2
BS transmitter beamforming
Modulation analysis
(MSE not included)
EVM
(MSE not included)
07 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Measurement details
All of the RF transmitter measurements as defined by the IEEE 802.16e standard, as well as a wide range of additional
measurements and analysis tools, are available with a single keystroke. These measurements are fully remote controllable
via the IEC/IEEE bus or LAN, using SCPI commands. A detailed list of supported measurements is shown in Table 4.
Table 4. One-button measurements provided by the N/W9075A measurement application.
X-Series measurement application
N9075A
W9075A
Channel power
●
●
Adjacent channel power (ACP)
●
●
Spectrum emission mask (SEM)
●
●
Spurious Emission
●
●
Occupied bandwidth (OBW)
●
●
Power vs time
●
●
Power Statistic CCDF
●
●
Monitor spectrum
●
●
IQ waveform
●
●
Modulation analysis
●
●
RCE (EVM) peak, rms
●
●
Pilot RCE
●
●
Unmodulated RCE
●
●
Preamble RCE
●
●
RSSI
●
●
Preamble boosting
●
●
Preamble errors (phase)
●
●
Preamble PCINR R1, R3
●
●
Frequency error
●
●
IQ offset
●
●
IQ timing skew
●
●
IQ quad error
●
●
IQ gain imbalance
●
●
Subcarrier flatness (relative, absolute)
●
●
Symbol clock error
●
●
Sync correlation
●
●
Time offset
●
●
Constellation
●
●
Data burst list and map display
●
●
Symbol error vs subcarrier, vs symbol
●
●
Symbol power vs subcarrier, vs symbol
●
●
08 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Key Specifications
Definitions
–– Specifications describe the
performance of parameters
covered by the product warranty.
–– 95th percentile values indicate
the breadth of the population
(≈2σ) of performance tolerances
expected to be met in 95% of
cases with a 95% confidence.
These values are not covered by
the product warranty.
–– Typical values are designated
with the abbreviation "typ."
These are performance beyond
specification that 80% of the
units exhibit with a 95% confidence. These values are not covered by the product warranty.
–– Nominal values are designated
with the abbreviation "nom."
These values indicate expected
performance, or describe product performance that is useful in
the application of the product,
but is not covered by the product
warranty.
–– PXA specifications apply to
analyzers with frequency options
of 526 and lower. For analyzers
with higher frequency options,
specifications are not warranted
but performance will nominally
be close to that shown in this
section.
Figure 2. Time-gated occupied bandwidth measurement.
Figure 3. Modulation analysis results and metrics.
Note: Data subject to change
Supported devices and radio
bands
Device type
Standard
BS, MS
802.16e-2005
Figure 4. Modulation analysis views and auto-detected DL-MAP.
09 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Performance specifications
Description
PXA
MXA
EXA
–50 dB
–50 dB (nom)
–49 dB1
–49 dB (nom)1
–42 dB (nom)
CXA
Modulation analysis
RCE (EVM) floor, RF input
10 MHz BW profile
CF ≤ 3 GHz
3 GHz < CF < 3.6 GHz
RCE (EVM) floor, analog baseband IQ input
10 MHz BW profile
−37.6 dB
–48 dB (nom)
Adjacent channel power accuracy
MS
10 MHz offset
20 MHz offset
BS
10 MHz offset
20 MHz offset
± 0.14 dB
± 0.26 dB
± 0.16 dB
± 0.47 dB
± 0.17 dB
± 0.83 dB
± 0.42 dB
± 1.78 dB
± 0.17 dB
± 0.33 dB
± 0.60 dB
± 0.64 dB
± 1.22 dB
± 1.33 dB
± 2.14 dB
± 2.63 dB
–35 dBm (nom)
± 0.63 dB
–35 dBm (nom)
± 0.82 dB
–35 dBm (nom)
± 0.94 dB
–35 dBm (nom)
± 1.33 dB
± 0.19 dB
± 0.23 dB
± 0.27 dB
± 0.61 dB
–81.7 dBm (nom)
at 10 MHz BW
–79.7 dBm (nom)
at 10 MHz BW
–75.7 dBm (nom)
at 10 MHz BW
–72.7 dBm (nom)
at 10 MHz BW
82.5
85.4 (typ)
–98.5 dBm
(–101.5 dBm typ)
77.4
82.8 (typ)
–94.5 dBm
(–99.5 dBm typ)
72.3
78.8 (typ)
–89.5 dBm
(–95.5 dBm typ)
69.3
75.5 (typ)
–86.5 dBm
( –92.5 dBm typ)
± 0.11 dB
±1.05 dB (± 0.31 dB
95% confidence)
± 0. 28 dB
± 1.53 dB (± 0.65 dB
95% confidence)
± 0.81 dB
(95% confidence,
100 kHz to 3 GHz)
± 1.80 dB
(95% confidence,
3 to 7.5 GHz)
NA
Channel power
Minimum power at RF input
Absolute power accuracy
20 to 30 °C, Attenuation = 10 dB
90% confidence absolute power accuracy
20 to 30 °C, Attenuation = 10 dB
Measurement floor
Spectrum emission mask
Dynamic range, relative
5.05 MHz offset 10 MHz BW
Sensitivity, absolute
5.05 MHz offset 10 MHz BW
Accuracy
Relative
Absolute 20 to 30 °C
± 0.05 dB
± 0.12 dB
± 0.62 dB (± 0.20 dB ± 0.88 dB (± 0.27 dB
95% confidence)
95% confidence)
Spurious emissions
Accuracy
Frequency range
20 Hz to 3.6 GHz
1.
± 0.19 dB
(95% confidence)
± 0.29 dB
(95% confidence)
± 0.38 dB
(95% confidence)
3.5 to 8.4 GHz
± 1.08 dB
(95% confidence)
± 1.17 dB
(95% confidence)
± 1.22 dB
(95% confidence)
8.3 to 13.6 GHz
± 1.48 dB
(95% confidence)
± 1.54 dB
(95% confidence)
± 1.59 dB
(95% confidence)
For instruments with serial number prefix ≥ MY/SG/US5233, which ship standard with N9020A-EP2 as the identifier. Refer to the 802.16
OFDM chapter of the MXA specification guide for specifications on the other MXAs. For MXA, phase noise optimization is set to fast tuning.
For a complete list of specifications refer to the appropriate specifications guide.
PXA:
www.keysight.com/find/pxa_specifications
MXA:
www.keysight.com/find/mxa_specifications
EXA:
www.keysight.com/find/exa_specifications
CXA:
www.keysight.com/find/cxa_specifications
10 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Ordering Information
Software licensing and
configuration
Choose from two license types:
–– Fixed, perpetual license:
This allows you to run the application in the X-Series analyzer in
which it is initially installed.
Try Before You Buy!
Free 30-day trials of X-Series measurement applications provide unrestricted use of each application’s features and functionality on your X-Series
analyzer. Redeem a trial license online today:
www.keysight.com/find/X-Series_trial
–– Transportable, perpetual license:
This allows you to run the application in the X-Series analyzer in
which it is initially installed, plus
it may be transferred from one
X-Series analyzer to another.
The table below contains information on our fixed, perpetual licenses. For more information, please visit the product
web pages.
N9075A & W9075A Mobile WiMAX X-Series measurement application
Description
Mobile WiMAX
1.
Model-Option
Additional information
PXA, MXA, EXA
CXA/CXA-m
N9075A-2FP
W9075A-2FP
1
The CXA-m only supports transportable license. Visit the product web page for further information.
11 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Hardware configuration
N9030A PXA signal analyzer
Description
Model-Option
Additional information
3.6, 8.4, 13.6, 26.5, 43, 44, or 50 GHz frequency
range
N9030A-503, -508, -513, -526, -543, -544
or -550
One required
Analysis bandwidth to 25 MHz
N9030A-B25
Required
Analog baseband IQ (BBIQ) inputs
N9030A-BBA
Required for analog baseband
measurement
Precision frequency reference
N9030A-PFR
Recommended
Electronic attenuator, 3.6 GHz
N9030A-EA3
Recommended
Preamplifier, 3.6, 8.4, 13.6, 26.5, 43, 44 or 50 GHz N9030A-P03, -P08, -P13, -P26, -P43, -P44
or -P50
One recommended
N9020A MXA signal analyzer
Description
Model-Option
Additional information
3.6, 8.4, 13.6, or 26.5 GHz frequency range
N9020A-503, -508, -513 or -526
One required
Analysis bandwidth to 25 MHz (standard option)
N9020A-B25
Required
Analog baseband IQ (BBIQ) inputs
N9020A-BBA
Required for analog baseband
analysis
Precision frequency reference
N9020A-PFR
Recommended
Electronic attenuator, 3.6 GHz
N9020A-EA3
Recommended
Preamplifier, 3.6, 8.4, 13.6 or 26.5 GHz
N9020A-P03, -P08, -P13 or -P26
One recommended
Model-Option
Additional information
N9010A EXA signal analyzer
Description
3.6, 7.0, 13.6, 26.5, 32, or 44 GHz frequency range N9010A-503, -507, -513, -526, -532, or -544
One required
Analysis bandwidth to 25 MHz (standard option)
N9010A-B25
Required
Precision frequency reference
N9010A-PFR
Recommended
Fine step attenuator
N9010A-FSA
Recommended
Electronic attenuator, 3.6 GHz
N9010A-EA3
Recommended
Preamplifier, 3.6, 7.0, 13.6, or 26.5 GHz
N9010A-P03, -P07, -P13, or -P26
One recommended
Description
Model-Option
Additional information
3.0, 7.5, 13.6, or 26.5 GHz frequency range
N9000A-503, -507, -513, or -526
One required
Analysis bandwidth to 25 MHz
N9000A-B25
Required
Precision frequency reference
N9000A-PFR
Recommended
Fine step attenuator
N9000A-FSA
Recommended
Preamplifier, 3.0, 7.5, 13.6, or 26.5 GHz
N9000A-P03, -P07, -P13, or -P26
One recommended
N9000A CXA signal analyzer
You Can Upgrade!
Options can be added after your initial purchase.
All of our X-Series application options are license-key upgradeable.
UP
GRADE
12 | Keysight | Mobile WiMAX X-Series Measurement Application - Technical Overview
Related Literature
N9075A and W9075A, Demonstration Guide, literature number 5990-5930EN
Mobile WiMAXTM PHY Layer (RF) Operation and Measurement, Application Note,
literature number 5989-8309EN
IEEE 802.16e WiMAX OFDMA Signal Measurements and Troubleshooting, Application
Note 1578, literature number 5989-2382EN
N9075A & W9075A 802.16 OFDMA Measurement Application Measurement Guide,
Part Number N9075-90013
User’s and Programmer’s Reference Guide is available in the library section of the
N9075A and W9075A product pages.
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WiMAX, Mobile WiMAX, WiMAX Forum, the WiMAX Forum logo, WiMAX Forum Certified,
and the WiMAX Forum Certified logo are US trademarks of the WiMAX Forum.
(BP-09-23-14)
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This information is subject to change without notice.
© Keysight Technologies, 2013 - 2015
Published in USA, March 19, 2015
5989-5353EN
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