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LTE Downlink issue 2:iss 1 - VIAVI Solutions · PDF file 2021. 1. 31. · LTE/LTE-A Downlink (FDD and TDD) Measurement Suite Data Sheet • Designed for the production test of the

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  • The most important thing we build is trust

    PXI LTE/LTE-A Downlink (FDD and TDD) Measurement Suite Data Sheet

    • Designed for the production test of the base station RF, tailored for the evolving small cell test requirement

    • Industry leading measurement speed and 3GPP specification exceeded measurement accuracy.

    • Ready to support the BS RF non-signaling measurement during the R&D design stage. A good choice for the 7X24 regression test, advanced radio signal simulation and analysis application

    • LTE-A Carrier Aggregation

    • Global TDD and FDD LTE bands

    • Production test focused transmitter and receiver RF characteristics measurement � Output Power � CCDF � Occupied Bandwidth � Adjacent Channel Leakage Ratio � Operating Band Unwanted Emissions � Frequency Error � EVM � Reference sensitivity level

    � In-channel selectivity

    The LTE/LTE-A downlink measurement suite is a collection of software tools for use with the PXI 3000 Series RF modular instruments for measuring the LTE FDD and TDD transmitter and receiver characteristics of the base station including small cell, in accordance with the methods described in 3GPP TS 36.141 V10.6.0.

  • The measurement suite combined with the excellent RF performance of PXI VSA and VSG modules, is suitable for the base station RF components test during design validation and production test stages.

    • PXI Studio 2 provides a user interface for bench-top manual operation during design integration or trouble shooting with multiple views of graphical traces.

    • Analysis component libraries provide low level remote programming interfaces for highly customized ATE system integration.

    • IQCreator waveform generation tool (supplied separately) enables the generation of bespoke test waveforms for use in measuring the receiver characteristics of the RF components.

    PXI Maestro is a unique automated production test tool which optimizes test speed through parallel and multi-thread measurement techniques. Integrated test plan editor and debug tools speed through the interface between R&D and production test and reduce the time for new product introduction. PXI Maestro based solutions are available for customers who require a Turnkey production ATE solution.

    Figure1. LTE Downlink Measurement Suite Software Component Architecture

    IQCreator and PXI Studio 2 application software are supplied free of charge with PXI 3000 modules. Operation of the measurement suite or IQCreator requires simple activation of a license key option on the PXI 3000 hardware.

    Further information for these applications is available through the following links:

    • IQCreator

    • PXI Studio 2

    • PXI Maestro

  • SPECIFICATIONS

    All specifications are defined when used in conjunction with any 3030 Series or 3070A PXI RF Digitizer with option 117 LTE Downlink operating in all 3GPP 36.141 specified global FDD and TDD LTE bands.

    Tx measurements performed are in accordance with 3GPP 36.141 V10.6.0 Chapter 6.

    Flexible options of stimulus are available for the receiver characteristics measurement in accordance with 3GPP 36.141 V10.6.0 Chapter 7.

    Specifications are defined with the input signal at the RF digitizer tuned frequency and at the reference level unless otherwise stated.

    TX MEASUREMENT CONFIGURATION

    RF

    Frequency User defined frequency (Hz), subject to the supported RF input of frequency range of the PXI RF digitizer

    Band Valid value: FDD: 1-25 (excluding band 5, 16)

    TDD: 33 to 43

    Channel Valid value: Subject to selected band and bandwidth

    Attenuation Mode Auto, Manual.

    Auto: All Digitizer hardware setting are set automatically based on the specified DUT output level and TX path loss

    Manual: User control is provided for RF attenuation and preamplifier settings.

    System

    Bandwidth 1.4, 3, 5, 10, 15 and 20 MHz

    Up to 2x20 MHz Intra band Carrier aggregation

    Downlink Mode FDD, TDD

    Triggering

    Triggering Type Immediate, External, Burst

    Trigger source, delay and polarity can be configured manually when the external triggering type is selected.

    Trigger level, delay and polarity can be configured manually when the burst triggering type is selected.

    Measurements

    Search Length Manual configurable

    Sync Type Primary Sync signal, Cell-specific reference signal

    User Carrier Filter Disabled, Enabled

    Pilot Tracking (Amplitude/Time/Phase)

    Enabled, Disabled

    Test Model E-TM 1.1, E-TM 1.2, E-TM 2, E-TM 3.1, E-TM 3.2, E-TM 3.3, Manual Configuration

    The Tx signal cell ID physical channel parameters and analysis options are manually configurable, in order to demodulate and analyze the non-standard 3GPP test model(1) Tx signals.

    Footnote (1) The Tx signal with 7.5 kHz sub-carrier spacing, multi-cast operation (PMCH, MBSFN reference symbols) and UE-

    specific/MBSFN reference symbols are not supported in the current release.

  • TX MEASUREMENTS

    ACLR Configuration ACLR Configuration Mode Auto, User defined

    ACLR Limit Mode Wide (Category A), Wide (Category B1), Wide (Category B2), Local, Home

    Operating Band Unwanted Emissions Mask

    Operating Band Unwanted Emissions Mask

    Wide (Category A), Wide (Category B1), Wide (Category B2), Local, Home, User defined

    Aggregated Maximum Power (Home BS)

    20.00 dBm, Manual

    FREQUENCY ERROR

    Indication Hz

    Locked Range ±7.5 kHz

    Accuracy 500 MHz and ≤3 GHz 3 GHz and ≤6 GHz

  • EVM Indication %

    Traces EVM (RMS) vs. Symbol

    EVM (RMS) vs. Slot

    EVM vs. Subcarrier

    EVM vs. Resource Block

    Constellation

    Text Measurement Results

    EVM (RMS, Peak) vs. Channel: Pilot, PBCH, PCFICH, PHICH, PDCCH, PDSCH (General, QPSK, 16QAM, 64QAM), PSCH, SSCH

    EVM Live, Average, Min Hold, Max Hold, Std. Dev statistics result is available.

    Accuracy

  • OTHER TRACE MEASUREMENTS

    Symbol Clock Error vs. Symbol Magnitude Error vs. Resource Block

    Symbol Clock Error vs. Slot Phase Error RMS vs. Symbol

    Magnitude Error RMS vs. Symbol Phase Error RMS vs. Slot

    Magnitude Error RMS vs. Slot Phase Error vs. Subcarrier

    Magnitude Error vs. Subcarrier Phase Error vs. Resource Block

    OPERATING BAND UNWANTED EMISSIONS

    Measurement Results Operating band unwanted emissions measurement overall Pass/Fail

    Operating band unwanted emissions measurement fail frequency (Hz)

    Operating band unwanted emissions fail level (dB)

    Trace Operating band unwanted emission measurement and limits

    Figure 7. Operating band unwanted emission measurement and limits

    ADJACENT CHANNEL LEAKAGE RATIO (ACLR)

    Measurement Results ACLR Pass/Fail

    ACLR absolute power (dBm), relative power (dBc) and limits (dBc) at each 36.141 specified BS adjacent channel centre frequency offset below the lowest or above the highest carrier centre frequency transmitted.

    Measurement Accuracy In any 3GPP frequency band

  • RX MEASUREMENT

    PXI Studio 2 is used with a full range of predefined 3GPP compliant waveforms to control the PXI VSG and perform receiver sensitivity testing per 3GPP TS34.141 clause 7.2

    Additional waveforms for other 3GPP section 7 test cases can be generated using IQCreator. See application note 46900/838 "Performing LTE Base Station Receiver Measurements" on our website. Use of IQCreator requires option 100 is enabled on the 3020 Series or 3320 signal genera- tor module.

    Figure 9. IQCreator waveform generation tool screenshot

    PXI Studio 2 provides the simple GUI for controlling multiple VSG modules, and facilities the 3GPP 36.141 defined receiver measurement scenarios requiring a second RF signal generator source, e.g. In-channel selectivity.

  • Figure 10. Multi-Source plug-in of PXI Studio2

    Further RF signal generating capability related information is available through the following links:

    • 3020 Series PXI Digital RF Signal Generators data sheet

    • 3050A/3320 PXI Low Noise Signal Generator data sheet

  • GENERAL

    ORDERING

    LTE Downlink (FDD and TDD) Measurement Suite

    When purchased with a 3030 Series RF Signal Digitizer module, order as: 3030 option 117

    When purchased with a 3070A RF Signal Digitizer module, order as: 3070 option 117

    PXI Maestro Ordering Information

    3030 option 217 (requires option 117)

    3070 option 217 (requires option 117)

    Retrofit Options

    RTROPT117/3030

    RTROPT117/3070

    RTROPT217/3030 (requires option 117)

    RTROPT217/3070 (requires option 117)

    Operating System Win7/32 bit and Win7/64 bit

    Required Memory 512 Mbytes minimum, 1024 Mbytes recommended

    Display Resolution Minimum 1024 x 768

    Hardware Compatibility

    3030 Series or 3070A RF Signal Digitizer (VSA)

    3020 Series or 3050A/3320 RF Signal Generator (VSG)

    Software Compatibility

    PXI 3000 Series modules require NI VISA:

    Minimum version 4.6 or later

    LTE Downlink (3030 option 117) requires PXI Studio2 minimum version 2.4

    LTE Downlink (3070 option 117) requires PXI Studio2 minimum version 2.4 and PXI module driver minimum version 8.4.0.

    Use with PXI 3066 RF combiner module requires PXI module driver minimum version 8.4.0.

  • www.cobham.com/wirelessCobham Wireless - Validation

    Part N

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