Strategies in Software Defined RF and Wireless Communications Test. Srini Badri Business Development Manager National Instruments

Transcription

1 Strategies in Software Defined RF and Wireless Communications Test Srini Badri Business Development Manager National Instruments

2 Wireless Technology Driving Applications Emergence of the Smart Phone Growth of the SOC

3 New Long Tail Applications GPS + Glonass Receivers RFID Toll ways Wireless Smart Meters

4 Emergence of the Smartphone Ericsson: T36 First cell phone with integrated Bluetooth Nokia: 9500 communicator First Nokia phone with integrated Wi-Fi HTC : EVO First WiMAX phone in the US Benfon: esc! First cell phone to include a GPS receiver Nokia 6200 First EDGE phone LG CU50 First HSDPA handset in US

5 Emergence of the Multi-Radio SOC BroadcomBCM4317 First single-chip Wi-Fi solution (802.11b) TI WiLink 6.0 First integrated A-GPS + Bluetooth + FM Broadcom BCM4325 First integrated WLAN + FM + Bluetooth chip Aug-2006 Apr-2008 Feb-2010 Sep-2003 Mar-2008 Dec-2008 Marvell 88W8688 First Bluetooth + WiFI single chip GCT GDM7215 First integrated Wi-Fi + WiMAX chip TI WiLink 7.0 First integrated a/b/g/n + FM + Bluetooth + GPS Chip

6 New Demands on RF Instruments Expanded Test Coverage New wireless standards Future wireless standards Better Instrument Performance Better RF measurement accuracy Faster measurement speed Evolution of the Cellular PA Single-Band GSM Dual-Band GSM/EDGE Multi-band & Multi-mode

7 Evolution of the RF Instrument WLAN CMW-500 WLAN IQ2010 Cellular IQxstream Discrete single-function VSA s and VSG s 1-button and 1-function VSA+VSG Testers Multicom and testers with multiple RFports

8 Four Key Measurement Technologies

9 The Traditional Spectrum Analyzer Uses swept-tune approach Automated through GPIB The Traditional Spectrum Analyzer Attenuator Mixer IF Amp Detector Video BW Digitizer Display ADC Local Oscillator

10 PXI: A New Approach to RF Test PXI RF Signal Analyzer Attenuator Mixer IF Amp IF Filter Digitizer Display ADC & DDC CPU Result Local Oscillator

11 PXI Combines Standard Technologies PXI controller OS Technology ADEs Chassis PXI backplane Bus Technology Timing Synchronization Peripheral Slots

12 FPGAs

13 Processing Power Benefits of FPGAs for RF Integration with Existing IP High Determinism True Parallelism Reconfigurable Programmable Interconnects Logic Blocks

14 RFID Test System Architecture RFID Tag/Reader RFID Software Host Computer RF IF Up converter Antenna IF RFID Baseband Product Software Down converter

15 High-Speed Bus

16 Increasing (Improving) Bandwidth Max Bandwidth (MB/s) Bandwidth vs. Latency Good Better Best PCI Express (x4) 100 Gigabit Ethernet USB 2.0 PCI/PXI (32/33) 10 Fast Ethernet IEEE 1394a GPIB (HS 488) VME/VXI 1 USB 1.1 GPIB (488.1) Approximate Latency (μs) Decreasing (Improving) Latency

17 RF Record and Playback Antenna Amplifier Bandpass Filter Vector Signal Analyzer Disk Array LNA Disk Array Vector Signal Generator Attenuator Receiver

18 Multi-Core CPUs

19 Parallel Architectures Drive Performance 5,000 5, TMACS 500 FPGA Performance (GMACs) FPGAs 50 CPUs 50 CPU Performance (GFLOPs)

20 Measurement Speed Comparison Signal type: g Wireless LAN (WLAN) Measurement: Error Vector Magnitude (EVM) Benchmark Details: Control instruments through programming API Measure time calculated over 100 measurements Results: 5x to 10x faster than traditional box instrument Data Rate (Mbps) Burst Duration Modulation Type NI PXIe-5663E Time ms 64-QAM ms 16-QAM ms BPSK < 10 ms < 12 ms < 25 ms

21 Parallel Test Implementation GSM Composite Measurement Design GSM Composite Measurement Implementation RFSA PVT Measurement Acquisition Core 1 Core 1 PFER Measurement Core 2 Core 2 ORFS Measurement Core 3 Core 3

22 The Power of Software

23 The Need for Flexible Software Wireless standards evolve Cellular GSM/EDGE WCDMA HSPA+ LTE LTE Adv. Wireless Connectivity a/b g n k? New standards can be addressed with Software

24 Software for RF Measurements Soft front panel Scope mode Slot mode RMS versus Time Programming API Automated measurements

25 RF Reference Architecture RFSA Initialization Setting of RFSA Parameters RFSA Closing Measurement Initialization Setting of Measurement Parameters Measurement Measurement Closing

26 Case Study

27 Microsoft Uses NI LabVIEW and PXI to Develop Production Test System for Xbox 360 Controllers The Challenge Developing a comprehensive, low-cost production test system for the Microsoft Xbox 360 wired and wireless controllers. The Solution A flexible, automated test system based on Windows XP, Microsoft SQL Server, NI LabVIEW, and PXI to test the functional performance of the Xbox 360 wired and wireless controllers

28 Summary Evolution in technology produces an evolution in instruments Today s engineers require better instrumentation than ever Four key technologies are driving today s instrumentation FPGAs PCI Express Multi-core CPUs Software