Analyze Assure Accelerate TM SR5500 Wireless Channel Emulator

Analyze Assure Accelerate TM Spirent’s Fading Simulator History With more than a decade’s experience, Spirent is the world’s leading developer and supplier of high performance fading simulators Spirent’s channel emulators accelerate the development and deployment of new products and services by providing detailed control of repeatable real-world radio propagation conditions

Analyze Assure Accelerate TM SR5500 Wireless Channel Emulator Spirent’s Next-Generation Fading Emulator

Analyze Assure Accelerate TM SR5500 for today’s Wireless Technologies Overcoming multi-path fading is a major obstacle in today's wireless technologies. WCDMA, CDMA2000 and WLAN must perform thorough radio channel analysis SR5500 for physical layer analysis RX A RX B Device under test Device tester Channel Simulator or Channel Simulator AWGN Generator AWGN Generator

Analyze Assure Accelerate TM SR5500 Key Features Superior Channel Fidelity for next generation modulation schemes User friendly Real-time control and Ease- of-Use Real-World fading generator and channel models ensuring lab results replicate field results

Analyze Assure Accelerate TM SR5500 Channel Fidelity

Analyze Assure Accelerate TM Channel Fidelity Superior Channel fidelity is required in RF test equipment when testing higher order modulation schemes such as HSDPA, EV-DV, and WLAN 64 QAM RF test equipment must not be a contributing factor in degrading the users signal, especially for higher modulation schemes EVM (error vector magnitude) is used as a measure of signal quality of a modulated RF signal SR5500 has Superior Channel Fidelity

Analyze Assure Accelerate TM Channel Fidelity WCDMA/HSDPA & EV-DV – 16QAM signal  16 QAM signal was fed into input of product  Distortion from competition due to poor channel fidelity CompetitionSR5500

Analyze Assure Accelerate TM Channel Fidelity SR5500 Competition Baseline WLAN – 64QAM signal Note: WLAN requires -25 dB minimum EVM

Analyze Assure Accelerate TM Channel Fidelity Signal degradation should result from the controlled set fading parameters not parasitic impairments due to test equipment RF test equipment should produce the desired channel models and nothing else; it should neither mask problems nor force engineers to account for residual effects. SR5500 generates desired results

Analyze Assure Accelerate TM SR5500 Real-time control and Ease-of-Use

Analyze Assure Accelerate TM Real-time control and Ease-of-Use Channel Model parameters can be changed in real-time Real-time control eliminates the need for re-calculating the fading profile  Reducing test time  Simplifying channel set-up Competitive solutions must pre-calculate fading models, increasing test times

Analyze Assure Accelerate TM Real-time control and Ease-of-Use Real-time digital power meter and output power level control  Reduces additional lab equipment needed for measuring power levels  Digital implementation allows for increased accuracy at the measured input and set output levels

Analyze Assure Accelerate TM Real-time control and Ease-of-Use Real-time digital power meter has dual mode functionality, for increased output and C/N accuracy  Triggered mode ideal for burst signals such as WLAN, 3GPP HSDPA, EV-DV  Continuous mode for non-bursty signals such as GSM, WCDMA and CDMA

Analyze Assure Accelerate TM Real-time control and Ease-of-Use Total control over real-time statistical channel model playback Play Stop Pause Reproduce fading scenarios to focus on receivers weak points Real-time channel model Power Delay Profile (2D and 3D mode)

Analyze Assure Accelerate TM Real-time control and Ease-of-Use Test Assistant simplifies standard fading test by walking you thru a step-by-step setup configuration Quick and easy standards fading profile set-up

Analyze Assure Accelerate TM Real-time control and Ease-of-Use SR5500 is provided with Dell’s top of the line laptop Latitude D800 External controller PC allows for equipment versatility and latest operating systems

Analyze Assure Accelerate TM Real-time control and Ease-of-Use Spirent understands every lab environment has different means of controlling lab equipment The SR5500-API (Application Programming Interface) and SR5500-RPI (Remote Programming Interface) was developed to assist in all lab environments Both programming interfaces were developed with the end-user in mind, ease-of-use

Analyze Assure Accelerate TM Real-time control and Ease-of-Use SR5500 API (Application Programming Interface)  Ideal for.NET and Com environments such as Visual basic, LabView and LabWindows  Provides extensive online Hyperlinked help resources  Simplifies Automated Test System Integration SR5500 RPI (Remote Programming Interface)  Developed to assist with test environments not running on Windows based PC’s  recall both standard and custom configured profiles  set Input and Output levels and perform Autosets, the key parameters for fading test

Analyze Assure Accelerate TM Real-time control and Ease-of-Use SR5500 API Front Panel was added to give user clarification on unit programmable status Viewable display is useful for displaying current state of the product during customer automated test

Analyze Assure Accelerate TM Real-time control and Ease-of-Use Control flow diagram for RPI User’s Remote Computer SR5500 Laptop SR5500 Unit SR5500 System TCP/IP via Ethernet Proprietary Control Interface via Ethernet Control Application SR5500 Remote Interface Application SR5500 API

Analyze Assure Accelerate TM Real-time control and Ease-of-Use System Setup view displays unit configuration and allows for flexible noise and carrier settings

Analyze Assure Accelerate TM Real-time control and Ease-of-Use SR5500 accounts for cable loss to give actual power readings at DUT

Analyze Assure Accelerate TM SR5500 Real-World Simulation

Analyze Assure Accelerate TM Real-World Simulation SR5500 possesses a real-time fading generator Produces a repetition rate over 1700 hours without sacrificing number of paths Why is real-time fading important?  To insure required level of confidence in test results, a fading sequence should not repeat  To make sure your lab results model field results Non-real-time (pre-calculated) fading sequence repetition rate decreases as channel model complexity increases

Analyze Assure Accelerate TM Real-World Simulation Minimum test duration times for WCDMA receiver evaluation can be as long as 628 seconds Example: Sequence repetition rate of 16 seconds effectively shortens test duration from 628 seconds to 16 seconds, reducing test confidence Repeat #3 Competitor SR5500 Repeat #4 Repeat #N 10’s of seconds ……… Beyond 1700 hours SR5500’s real-time fading ensures real world results

Analyze Assure Accelerate TM Real-World Simulation If CCDF not correct Rayleigh distribution statistically incorrect SR5500 brings the real- world into your lab by making sure all Rayleigh properties are statistically correct Competitor SR5500 Not Good SR5500 complies with all fading statistics

Analyze Assure Accelerate TM Real-World Simulation The Real-World is a dynamic world, and so are the fading conditions seen by receivers in wireless communications Testing Standards use static fading profiles, hardly stressing the receivers performance Spirent developed a Dynamic Environment Emulation (DEE) to bring real-world scenarios into the lab D ynamic E nvironment E mulation

Analyze Assure Accelerate TM Real-World Simulation In the real-world, the PDP shape (# paths, path loss, delay spread) changes substantially every few meters (10’s of ms) DEE (Dynamic Environment Emulation) allows user to dynamically change parameters such as: State Duration Channel Output Level Path Delay Path Status (on/off) Relative Path Loss Real-World channel models for Real-World results

Analyze Assure Accelerate TM Real-World Simulations DEE goes beyond standards testing giving the ability to create real-world fading scenarios

Analyze Assure Accelerate TM Real-World Simulations AWGN (Additive White Gaussian Noise) is an unwanted impairment and exist in every wireless environment SR5500-AWGN option simplifies wireless receiver test setups, and overall lab cost The addition of AWGN further enhances the real-world conditions emulated by the SR5500 SR5500 adds AWGN simplifying lab set-ups

Analyze Assure Accelerate TM Real-World Simulations Programmable C/N Ratios  +30 to –30 dB  0.1 dB resolution Greater than 2 hour repetition rate AWGN added Digitally for high level accuracy Selectable AWGN bandwidths from 1.6 to 26 MHz

Analyze Assure Accelerate TM SR5500 Features & Options

Analyze Assure Accelerate TM Product Features and Options 24 paths with 0.1 ns delay resolution 26 MHz Channel bandwidth Frequency Range  400 – 2700 MHz  4100 – 6000 MHz (SR5500-6GHz option) Annual Support Agreement (SR5500-ASA option)  Yearly calibrations  Superior Customer Support  Proactive feature updates

Analyze Assure Accelerate TM SR5500 Roadmap September 2004 Q2, 2005 Potential Future releases Diversity API Front Panel Cable loss Multi-unit single PC (control up to 4 units) Simultaneous DEE (control up to 4 units) Real-time C/N meter AWGN-DEE MIMO Future Q3 Q4 Q1 Q2 ** Now Available **

Analyze Assure Accelerate TM SR5500 Summary Superior Channel Fidelity for next generation high data rates Real-time control and Ease-of-Use for improved lab setups and test times Real-World results require a fading emulator to produce real-world results

Analyze Assure Accelerate TM Copyright © 2003 Spirent Communications Inc. Analyze |Assure |Accelerate ™