WiMAX Test Solutions

Wave 2 and MIMO UpdateIQfact for Sequans SQN1010/1110/1130

Automated ManufacturingTest Solution

September 18, 2007John Li, Sales Dir. – Asia Pacific

Agenda

• Introduction & Scope

• IQmax Wireless Test Systems

• IQsignal Control GUI Software

• IQwave Signal Composition Software

• IQfact Automated Test Software

Introduction & Scope

LitePoint Solutions for WiMAX Testing Introduction

• LitePoint: a leader in Wireless Test• Proven track record in WiFi• Offering Complete Test Solutions for WiMAX, WiFi, BT, Zigbee

• And more to come

• One-box test solutions• Integrating VSG and VSA• Compact, complete, dedicated, optimized• Multiple wireless standards

• Complete System Solutions• Focus on automated manufacturing test• Dedicated solutions for manufacturing and R&D• Systems, software, automation, partnerships

• Achieving the lowest cost of test at the highest coverage

04/19/23 Copyright © 2006, LitePoint. All rights reserved 5

Leading Companies Using LitePoint

“We invest in companies playing in large and growing addressable markets, with great teams, clear differentiation and unique competencies,” says Mike Goguen,

Sequoia Capital partner. “LitePoint is at the top of the class in every regard important to us with a unique business model, large and fast growing markets,

world-class technology, a superb customer base, and an inspired and driven team of people.

About Sequoia CapitalSince 1972, Sequoia Capital has provided early stage and growth stage venture capital for very smart founders and executives who have turned great ideas into

sustainable companies of enduring value.

To learn more about Sequoia Capital visit www.sequoiacap.com

Sequoia Capital investment – it’s a big deal!Sequoia Capital investment – it’s a big deal!

04/19/23 Copyright © 2006, LitePoint. All rights reserved 7

LitePoint Unique Approach and Value add

• Unique Approach :-focus to provide the best value manufacturing test solutions in the marketplace.

• Single box solutions, ease of use, simple, elegant and fast• Easy to deploy in high volume production set up• First line of end customer support for the chip-set companies

As a result : our test solutions enable • Chip-set companies to quickly establish their market share• Brand names move massively into the market quickly• Contract manufacturers and ODM efficiently mass-produced

#1

LitePoint Solutions for WiMAX Testing Key components

• IQmax: test platform • 3 basic instrument versions, to support specific needs• Modular system for MIMO testing• Software control interface: IQapi

• IQsignal (for WiMAX): R&D software• PC software to control instrument(s), analyze results• Separate control windows for VSA and VSG function• Supports SISO and MIMO test

• IQfact: automated test software• Turn-key automated test solutions for specific chipsets• Specifically targeted at manufacturing or DVT/QA

• IQwave (for WiMAX): add-on software for signal generation• Supports fixed and mobile WiMAX, SISO and MIMO

LitePoint Solutions for WiMAX TestingSolving T&M problems

• Capture & analyze any WiMAX signal for transmitter testing

• Typically single or few full frame(s) or sub-frame(s)• Analyze PHY-layer characteristics and performance of transmitter• Use IQmax instrument with IQsignal software

• Generate arbitrary WiMAX signals for receiver testing• Generate predefined waveforms, or replay captured or compiled

waveforms with IQsignal on IQmax• Manipulate basic parameters and impairments with IQsignal• Compile any waveform, with arbitrary impairments and channel

effects with IQwave

• Automated test (and calibration) of WiMAX devices• For manufacturing, DVT, QA or even R&D• DIY using C++ API to IQmax instrument• Use turn-key, chipset-specific IQfact software reference solutions

IQmax™Wireless Test

Systems

IQmax Wireless Test SystemKey Common Features

• One-Box Test System for WiMAX products• Serves the needs of mfg test, product and test development and

QA• Complete PHY layer testing; both Rx & Tx• Verify all PHY layer parameters for RCT compliance

• Advanced vector signal test methodology (VSA + VSG)• High accuracy EVM-based test methodology• Optimized for fastest test times / lowest cost-of-test• High bandwidth capture and signal generation

• 2.2-2.7, 3.3-3.8 and 4.9-6.0 GHz WiMAX tri-band support• All WiMAX bandwidth and datarate options supported

• Automated (manufacturing, DVT) test support via IQapi• C++ default, LabView (and MATLAB) optional

• Software upgradeable• Changes to the 802.16 specification, new features

IQmax Wireless Test SystemIQmax-500 and IQmax-100

IQmax-500 R&D Test System

• Two bidirectional RF ports• Interchangeable, programmable; switch-matrix

• Differential analog I&Q baseband interfaces• IQsignal GUI for development, QA and troubleshooting• C++ compatible API for production test program support• Option: WiFi and Bluetooth support

• Equivalent to IQview Test System• Adds IQsignal for WiFi software, API extensions

• Option: MIMO support• Allows combination of multiple units• Use MIMO capabilities of IQsignal

• New “b” platform version

IQmax-100 Manufacturing Test System

• Two bidirectional RF ports• Interchangeable, programmable; switch-matrix

• Optimized for Manufacturing. No GUI, no baseband • C++ compatible API for production test program support• Option: WiFi and Bluetooth support

• Equivalent to our IQflex Test System• Extended capabilities of API

• No MIMO option• True multi-stream MIMO test requires IQmax-500• Composite / Switching /MPTA

IQmax MIMO R&D Test System

• Targets WiMAX MIMO (“wave 2”) testing• The next wave in WiMAX

• Building blocks:• IQmax-500 (“b” version), MIMO option• IQmax Synchronization Unit; to synchronize frequency and

phase• IQsignal for WiMAX; new version, supporting MIMO

• Systems:• IQmax MIMO Starter Kit (2x2)• Expansion (to 3x3 or 4x4): add IQmax-500 system

IQmax MIMO R&D Test System

• IQmax MIMO Starter Kit (2x2)

• Stacked, handles & brackets• Cabling at the back (10MHz, RF LO, USB)• Expand to 3x3, 4x4 by adding IQmax-500 units (rack mount)

IQsignal™Control GUI Software

IQsignal for WiMAX Software(VSA Tool, SISO version shown)

IQsignal for WiMAX Software(WiMAX parameters)

IQsignal for WiMAX Software(VSG Tool, SISO version shown)

IQsignal for WiMAX SoftwareWhat is it

• GUI based Windows application• Runs on standard PC• Network connection (ethernet) to IQmax• Two main windows: VSA Tool, VSG Tool

• Controls capture & analysis, signal generation• Configure instrument(s)• Measure all PHY layer signal characteristics• Generate predefined waveforms, replay captured/stored waveforms,

introduce signal impairments

• Targeted for R&D and Q/A Applications

• MIMO update• Control multiple instruments• Support MIMO waveforms (generation, analysis)

IQsignal for WiMAX SoftwareOverview of key analysis parameters (1/2)

Waveform Display • Time Domain graph• I & Q signal graphs• Frequency spectrogram

Spectrum / Spectral Mask • Power Spectral Density graph• Spectral Flatness, Spectral Delta graphs• ACLR and OBW measurement

Constellation Diagram • I &Q graph• Data, pilots, unmodulated subcarriers

Error Vector Magnitude • EVM vs symbol graph• EVM vs subcarrier graph• EVM Average:• All subcarriers or data, pilots, unmodulated

Power Level • Peak power• Average: Full capture, waveforms only, preamble, data

IQsignal for WiMAX SoftwareOverview of key analysis parameters (2/2)

Center Frequency Offset • Offset vs time graph• Offset Averaged

Phase Noise • Power Spectral Density graph• Phase Error vs time graph• RMS phase noise

IQ Imbalance • Phase imbalance• Amplitude imbalance

Amplitude Variation • Amplitude vs Symbol graph

PA Compression Analysis • CCDF graph

Spectral Flatness • Frequency domain graph

LO Leakage

Symbol Clock Rate Offset

• Note: all graphs and data can be shown per MIMO stream, per zone and per burst (as applicable)

IQwave™Signal Composition

Software

IQwave for WiMAX SoftwareWhat is it

• GUI based Windows application• Runs on standard PC• Standalone application• Resulting waveforms can be used by IQsignal, for VSG

• Generates arbitrary WiMAX waveforms• Typically single full frame• Supports both fixed and mobile WiMAX, wave 1 & 2, SISO &

MIMO• Include signal impairments, channel effects

• Targeted for R&D and Q/A Applications• In Manufacturing: use default waveforms (or provided by LP)

IQwave for WiMAX Software

IQfact™Automated Test

Software

Production Test SupportTypical list of test items, supported by IQmax

• Transmitter Tests• Relative Constellation Error / EVM• Center Frequency Offset• Symbol Clock Rate Offset• Power Level Control• Spectral Flatness• Spectral Mask and/or ACLR• Carrier Leakage• IQ Phase and Amplitude Imbalance• MIMO transmit parameters and performance

• Receiver Tests• RSSI, CINR reporting• PER test• Receiver Sensitivity, Saturation• Automatic Frequency Control function• MIMO receive performance and reporting

Production Calibration SupportTypical list of calibration items, supported by IQmax

• Tx Power Calibration• RSSI curve calibration• IQ Mismatch Adjustment• Center Frequency Adjustment• Carrier Leakage Adjustment• Spectral Flatness / Roll-Off Filter Calibration

LitePoint Production Test OptionsUsing IQmax instrument

• Manual, using IQsignal GUI• Practical for very small volumes only

• Automated, build your own test program• Using C++ API (or MATLAB, LabView)• Time-consuming, need detailed support from chipset vendor

• Automated, using IQfact• Turn-key solution for specific chipset• Provided by LitePoint, developed in close cooperation with

chipset manufacturer• Flexible, customizable

IQfact for WiMAX Software(console version)

IQfact for WiMAX Software(GUI version)

IQfact for WiMAX SoftwareWhat is it

• Flexible automated test software for WiMAX manufacturing• Use out-of-the-box for chip manufacturer recommended test

sequence and test limits – fastest time-to-ship• Modify the test sequence, limits and set-up files via simple text

files• Source code provided for test flow, result logging etc.• Create custom tests using the IQfact measurement software

module (dll)

• Test results are validated with the chip manufacturer

• Updates for chipset driver changes, optimizations• Via the LitePoint Client Center

IQfact for WiMAX SoftwareWave 2 Update

• Typical device is MS device• PC dongles, gateways• Mobile devices coming soon

• Limited MIMO functionality• Dual receiver, single transmitter• Multiple transmitters, higher order in the future

• LP phase 1: test MIMO chains independently• Equivalent to SISO; additional receiver cal & test• MIMO function not explicitly tested

• LP phase 2: use composite and/or switching methods• Equivalent to how this was introduced in WiFi by LP

• In R&D: Use IQmax MIMO Test System

IQfact for WiMAX SoftwareCurrent versions

• Several IQfact WiMAX test program available now• Wavesat DM256 fixed WiMAX devices• Sequans SQN1010 fixed WiMAX devices• Sequans SQN1110 wave 1 mobile WiMAX devices• Sequans SQN1130 wave 2 mobile WiMAX devices• Beceem BC-MS120 wave 1 mobile WiMAX devices• Beceem BCS200 wave 2 mobile WiMAX devices• Several different devices and interface types• More to come… Consult LP for up-to-date list of supported and

planned chipsets

IQfact for SequansSQN11xx Based Devices

37

Typical WiMax Test setup

Ethernet cable

DUT interfaceDUT 10dB pad

RF cable

IQMax 500

Shielding Box

IQfact for Sequans WiMax

• Calibration method and Test Coverage

• Fastest test time at best coverage and quality

• Joint effort of LitePoint and Sequans• Supported Interfaces: Cardbus, RS232

• Adding others is a matter of getting the right drivers from Sequans

• All Frequency and Bandwidth Variants Supported

• 2.3 and 2.5 GHz• 3.5, 5, 7, 8.75 and 10 MHz

IQfact for Sequans SQN11xxTest Items Coverage

• DUT & Tester initialization• MAC address entry (manual, barcode, file or none)• Check MFG FW version• Run board memory test• Load default calibration data in EEPROM• Calibrate I&Q offset• Calibrate PA gain• Calibrate RSSI curve• PA gain cal and transmitter performance verification• Transmit ACLR performance verification• Transmit spectrum mask verification• RSSI cal and receiver performance verification

Test Times and Analysis

• SQN 1010 ---- around 5-6mins• SQN1110 ----- from 2-5mins depending on design• SQN1130 ------ as of 11Sep07 6mins on SQN 4.2.1.

firmware Goal is to beat SQN 1110.

• Analysis of Test Times :- a) 70% spent on Calibrationb) 20% on Rx Verificationc) 10% on Tx Verification

LP’s niche is to optimize the Calibration time. This enables you to have an unfair advantage over others.

Thank you!

LitePoint Corporation575 Maude CourtSunnyvale, California 94085USATel / +1 408 456 5000 Fax / +1 408 456 0106www.litepoint.com