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presented by: Mark Lombardi Agilent USB/WiMedia Solution Manager

presented by: Mark Lombardi Agilent USB/WiMedia Solution Manager. Contributor Members WiMedia. Members USB-IF. WiMedia UWB PHY Simulation and Test. Outline. UWB Commercial Application Drivers WiMedia based MB-OFDM UWB overview WiMedia based MB-OFDM R&D Challenges

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presented by: Mark Lombardi Agilent USB/WiMedia Solution Manager

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  1. presented by:Mark LombardiAgilent USB/WiMedia Solution Manager Contributor Members WiMedia Members USB-IF WiMedia UWB PHY Simulation and Test

  2. Outline • UWB Commercial Application Drivers • WiMedia based MB-OFDM UWB overview • WiMedia based MB-OFDM R&D Challenges • Design and Simulation of WiMedia based UWB • Physical device measurements • Industry Driven Testing • Compliance Based/Interoperability • Regulatory • Conclusion / Q&A

  3. Audience Question • Do you consider yourself a; • Digital Focused Designer • RF Focused Designer • Both RF and Digital Designer

  4. Ultrawideband Technology UWB Direct Spectrum IEEE MB-OFDM RADAR Communications WiMedia Extensions Certified Wireless USB (USB-IF) IEEE 1394 Bluetooth

  5. Connecting the last “5 meters” • USB 2.0 (High Speed USB) • Most successful interface standard, about 3 billion ports • 480 MBit data rates • Certified Wireless USB: • High speed USB replacement (480 MBits/s), Any other questions? • Based on WiMedia Alliance OFDM UWB Technology • Not just wireless USB (low speed mice and keyboards) • Low power, short range, high data rates • Bluetooth: • Headsets and automotive the current “killer” applications (1 MBit/s) • Bluetooth 3.0 now planning to use WiMedia UWB for higher data rates

  6. Short Range Wireless enabled by UWB Potential Certified Wireless USB products for 2006/2007 • PCs and Peripherals • External Hard Drives, CD/DVD, burners • Printers • MP3 • Digital Cameras

  7. Companies Driving Adoption • WiMedia Promoters • Alereon, Inc., Hewlett-Packard Company, Intel Corporation, Kodak, Microsoft Corporation, Nokia Corporation, Philips, Samsung Electronics Co., Ltd., Sony Corporation, Staccato Communications, STMicroelectronics, Texas Instruments, Inc., Wisair Ltd. • WiMedia Formal Interoperability Test Participants • PHY vendors: Alereon, Inc., Realtek, Semiconductor, Staccato Communications, WiQuest Communications, Wisair and TZero Technologies Inc. • Test Equipment manufactures: Agilent • USB Industry Forum (Certified Wireless USB) • Leading Consumer Product Manufactures • Listed WiMedia members, USB-IF members

  8. Outline • UWB Commercial Application Drivers • WiMedia based MB-OFDM UWB overview • WiMedia based MB-OFDM R&D Challenges • Design and Simulation of WiMedia based UWB • Physical device measurements • Industry Driven Testing • Compliance Based/Interoperability • Regulatory • Conclusion / Q&A

  9. Spectrum Occupancy WLAN

  10. WiMedia PHY: Frequency Domain • FCC, Unlicensed 3100 MHz – 10600 MHz, -41.3 dBm/1 MHz • 528 MHz x 14 Bands 5 Guards 5 Guards QPSK, DCM 12 BPSK Pilots 128 subcarriers,4.125 MHzspacing Logical Frequency Subcarriers -61 . . . . . . . . . . . . . . . . . . . .+61 0 528 MHz/Band

  11. The MB-OFDM UWB Physical Layer • Subcarrier modulation • The modulation type used on the subcarriers depends on data rate • For the data-bearing subcarriers, QPSK or DCM (Dual-Carrier Modulation) is used. • For the lower data rates, 200 Mb/s and lower, QPSK • For the higher data rates, above 200 Mb/s to 480 Mb/s, DCM is used. • The 12 pilots are BPSK-modulated. 5 Guards 5 Guards QPSK, DCM 12 BPSK Pilots . . . . . . . . . .+61 0 528 MHz/Band

  12. WiMedia PHY, Time Domain time Freq. 528 MHz Symbol (312.5ns) OFDM Symbol (IFFT Output) ZPS (Zero-padded Suffix) Amp. time Packet PLCP Preamble PLCP Header PSDU 12 sym 6*(0, 1, …,37) sym 30 sym for standard (24 + 6) 18 sym for burst (12 + 6) Packet/FrameSynchronization Sequence Channel EstimationSequence Frame Payload

  13. WiMedia PHY: Time and Freq. • Frequency-Domain Spreading • Transmit same information time Symbol Freq. 3168 MHz copy Band #1 Band Group 1 ….. 3696 MHz Band #2 4224 MHz Band #3 4752 MHz • Time-Domain Spreading • Transmit same information over two symbols in TFI mode. • Spreading factor is 2. • Data A = Data B but over the different sub-bands. ….. Data A Data B Data C Data D Data E Data F Data G TFC: Time Frequency Code TFI: Time-Frequency Interleaving FFI: Fixed Frequency Interleaving

  14. Outline • UWB Commercial Application Drivers • WiMedia based MB-OFDM UWB overview • WiMedia based MB-OFDM R&D Challenges • Design and Simulation of WiMedia based UWB • Physical device measurements • Industry Driven Testing • Compliance/Interoperability • Regulatory • Conclusion / Q&A

  15. UWB Engineering Challenges I ANTENNA, COMPONENT • Wideband VSWR match and Impulse response • Differential Signal Isolation, Common Mode Rejection • TRANSMITTER • Spectral Flatness, Emission Mask, Peak Power, ACP • Transmit chain amplitude & phase response • Modulation Measurements (Error Vector Magnitude, Common Pilot Error) • Phase noise

  16. UWB Engineering Challenges II RECEIVER • Interference Testing • Generating UWB Test Signals • Measuring Rx PER / BER, with known distortions (impairments) • Interoperability testing

  17. Merging Simulation and Test Design EDA Tools R&D Space Concept Compliance Space Design Design Verification Manufacturing Space Prototype (Hardware Verification) Pilot Production Production Instruments Components Verification

  18. ADS for Wireless Communication System Design Wireless Standards Specification ` Wireless Libraries Fully coded signal source DUT Receiver Measurement System-Level Circuit-Level Transistor-Level Hardware-Level

  19. ADC quantization error ADC Model ADC

  20. Simulation and Vector Signal Analysis

  21. 802.11a interferer Filter WiMedia Signal 802.11a Signal

  22. Test Both Analog and BB Sections Baseband (BB) and RF Signals • ADS or N7619A To Baseband section • N6030A AWG Analog I/Q To RF section • PSG (opt 015)

  23. Transmitter performance testing

  24. Create Custom Waveforms • Modify standard WiMedia based signals • Data rate • Payload data length • Test individual receiver functions • Bypass data scrambling, interleaving, and error correction • Waveforms consisting of only packet preambles, channel estimation symbols • N7619A

  25. Transmitter performance testing

  26. Capture of WiMedia based Signals • Over 500 MHz required for FFI and 1.6 GHz required for TFI • Mix down and capture with 2 GHz scope all Band groups • Direct capture with 6 GHz scope for Band Group 1 • 12 GHz scope for all UWB Band Groups Captured with Agilent DSO81204B, used with the permission of Tzero Technologies

  27. Outline • UWB Commercial Application Drivers • WiMedia based MB-OFDM UWB overview • WiMedia based MB-OFDM R&D Challenges • Design and Simulation of WiMedia based UWB • Physical device measurements • Industry Driven Testing • Compliance/Interoperability • Regulatory • Conclusion / Q&A

  28. Intel Product Development Kit • Available through the USB-IF • Alternate control provided by PHY vendor WUSB Host MAC PHY

  29. RF tests for WiMedia based radios • Example PHY Compliance Tests • Transmitter • Transmit Center Frequency • Transmit Power Control • Power Spectral Density Mask (PSD) • Adjacent Channel Power Ratio (ACPR) • Error Vector Magnitude (EVM) • Receiver • Receiver Power Sensitivity • Receiver Frequency Offset Sensitivity

  30. 89600 VSA SW Radio Measurements

  31. Measurement Summary

  32. PSD Mask and ACPR

  33. UWB Bands and WW Regulations Band Group Band Group Band Group Band Group Band Group # 1 # 2 # 3 # 4 # 5 Band Band Band Band Band Band Band Band Band Band Band Band Band Band # 3 # 6 7 8 # 12 # 14 # 1 # 2 # 4 # 5 # # # 9 # 10 # 11 # 13 US DAA EU After 2010 DAA Japan -70dBm -70dBm -70dBm -70dBm DAA?? -70dBm -70dBm -70dBm After 2008 Asia 3432 3960 4488 5016 5544 6072 6600 7128 7656 8184 8712 9240 9768 10296 MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz 10560 3168 MHz MHz Usable bands (Detect And Avoid) Usable bands Unusable bands To be determined

  34. Regulatory Emissions Tests E4440 26GHz Performance Spectrum Analyzer • Most of the world wide regulatory organizations have or will have by early next year UWB limits.

  35. WiMedia RF Measurement Solution Agilent Receiver Agilent Transmitter “Golden Radio” BER/PER Advanced Design System Simulation Analogue IQ WiMedia based DUT Agilent Infiniium DSO 81204B12GHz,40GSaOscilloscope Agilent E8267D PSG Series Vector Signal Generator Agilent 89600 VSA Software Agilent N7619A Signal Studio for Multiband OFDM UWB Agilent N6030A Arbitrary Waveform Generator UWB Signal Verification, EVM measurement Signal Generation Base Band Modulation Demodulation Spectrum Testing UWB Signal Creation Agilent E4440A PSA Series 26.5GHz Spectrum Analyzer Regulatory Test, FCC

  36. Summary • Tools are available today to help with the design and integration of WiMedia based radio technology. • Simulation aids the development of WiMedia based radio’s as well as optimization and integration with other radios and follow on applications. • The up to 1.6 GHz of BW needed to capture and analyze WiMedia based MB-OFDM requires an Oscilloscope for capture. • Powerful Signal Analysis SW, can aid radio optimization, analysis and verification of operation to WiMedia spec. • Receiver performance can be benchmarked and optimized through the use of a “golden radio”.

  37. Further Information • Ultrawideband Communication RF Measurements Application Note AN1488 5989-0506EN • Cutler, Robert “Effects of Physical Layer Impairments on OFDM Systems” RF Design, May, 2002 p. 36 www.rfdesign.com • Agilent Application Note “Agilent PSA Series Swept and FFT Analysis” • 89600 VSA Software Option BHB MB-OFDM Modulation Analysis Technical Overview and Demo Guide  5989-5452EN. • Agilent Application Note 1380-1 “RF Testing of Wireless LAN Products” www.agilent.com/find/uwb www.wimedia.org www.usb.org/wusb/home

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