A Low Datarate Localization System IMST GmbH Jac Romme Carl-Friedrich-Gauß-Straße 2 Phone: +49-28 42-981 465 D-47475 Kamp-Lintfort, Fax: +49-28 42-981 499 Germany E-Mail: romme<at>imst.de UWB4SN, 04-11-2005, EFPL, Lausanne 1
Outline � UWB @ IMST � Puls-On Project Information � System Concept � Implementation � Project Results (Movie) UWB4SN, 04-11-2005, EFPL, Lausanne 2
UWB @ IMST: Goals with UWB Technology � Specialisation on applications � Low Data Rate (LDR) � Robust Transmission Application � Localisation � Application Scenarios Postprocessing/ Data distribution � Sensor Mesh � Industrial Facilities, Control/Monitoring WLAN UWB Other Location Location Location calculation calculation calculation � Entertainment-Theatre Raw WLAN Raw UWB � Emergency Services Raw ... data data data � Localisation part of general Concept � IPOS (Currently, WLAN based Localization System) UWB4SN, 04-11-2005, EFPL, Lausanne 3
UWB @ IMST: Activity Summary WHYLESS.COM EU 5th FP 2000-2004 Propagation measurements / models Air interface / coexistence System capacity, System performance BISON NRW 2002-2004 100 Mbit Communications using Zukunfts- Transmitted Reference wettbewerb Design & Implementation PULS-ON NRW 2003-2005 „UWB communication and localisation in Zukunfts- indoor environments“ wettbewerb PULSERS (II) EU 6th FP 2004-2008 Propagation measurements Channel models IP 1st Call EUROPCOM EU 6th FP 2004-2007 „UWB communication and localisation in indoor environments for emergency STRP 2nd services“ Call Implementation & system demonstration Antenna Industry Ongoing Protected by NDA Development UWB4SN, 04-11-2005, EFPL, Lausanne 4
Puls-On Project Scope � Partners: IMST, VCS Nachrichtentechnik AG � Duration: 07/2003 – 05/2005 � Budget: IMST 950kEUR, VCS 300kEUR � Funding: IMST 35%, VCS 35% � IMST: Radio Layer and Positioning � VCS: Data Concentration & Application UWB4SN, 04-11-2005, EFPL, Lausanne 5
Puls-On Project Objectives � Project objectives: � Both LDR Communication and Positioning � Inside Buildings � Indoor 2 Outdoor � Implementation of a Functional Demonstrator � Extend Know-how on Localization: � RF front-end, Signal Processing,... � Restrictions: � Limited Project Budget UWB4SN, 04-11-2005, EFPL, Lausanne 6
Puls-On: System Concept GPS Receiver Elektronischer Kompass RS-OE Base POM USB GPS Receiver Elektronischer RS-232 USB Kompass RS-OE Station POM USB RS-232 USB Base RS-MNT GPS Receiver Elektronischer Kompass Station MS RS-OE POM USB RS-MNT RS-232 USB Mobile Base Station Station RS-MNT Control Station PWR ACT/CH0 WIC0 ACT/CH0 WIC0 ACT ETH OK COL ACT/CH1 ACT/CH1 WLAN Access Point KS Darstellungs-Monitor KS-Server UWB4SN, 04-11-2005, EFPL, Lausanne 7
System Concept – Mobile Station I1 � Packet wise transmission Att1 IQ-mod 1 Att1 IQ-mod 1 Q1 � Pulse-duration: 10 ns I2 Pulse + Att2 Delay IQ-mod 2 � QPSK-TR signalling Pulse Generator Att2 Delay IQ-mod 2 Generator Out Amplifier Bandpas Q2 filter � 2 Pulses/frame I1 DAC1 DAC1 Q1 DAC2 DAC2 � QPSK -> 2 bit/Frame Control Unit I2 Control Unit DAC3 DAC3 Q2 DAC4 DAC4 � Frame = 220 ns � Packet length = 2000 Symbols or 0.44ms � 500 Acquisition and Training Symbols � 1500 Data Symbols � Packet rate 2.5 Hz UWB4SN, 04-11-2005, EFPL, Lausanne 8
System Concept – Reference Station � Demodulate packets & Determine Angle Of Arrival. Incident plane waves from x φ =90° and 0° ≤θ≤ 180° z θ hit the antenna system Φ y 5 2 GHz 2.1 GHz 4 2.2 GHz 2.3 GHz Port 2 3 2.4 GHz Port 1 2.5 GHz 2 2.6 GHz 2.7 GHz ] 1 2.8 GHz d 2.9 GHz a [ r ) 3 GHz Phase difference of 2 0 U - 1 U ( -1 signal measured at the g r a -2 ports of the antenna -3 system -4 -5 0 20 40 60 80 100 120 140 160 180 Θ [°] UWB4SN, 04-11-2005, EFPL, Lausanne 9
Implementation – Reference Station HF and Baseband Positioning AGC Distr. Finger PCB PCB Data & USB USB Ctrl ADCs RX-FIFO PC IMST Comm. Delayline Finger Data & Ctrl 8 analog Data & signals Ctrl DACs Baseband 6 bit PCB Power Supply UWB4SN, 04-11-2005, EFPL, Lausanne 10
Implementation – Reference Station HF and Baseband PCBs Data & Ctrl Data & Ctrl 8 analog Data & signals Ctrl 6 bit Power Supply UWB4SN, 04-11-2005, EFPL, Lausanne 11
Implementation – Reference Station Signal Processing PPM offset estimation ppm offset AOA plane Find LOS 2 pulse AOA Periodical and output AOA AOA Samples AOA PDP Resampler Phase2AOA Samples addition the related Phase LLV Weighted COM Samples IQ values QPSK offset Viterbi+CRC Info bits Resampler Sum DLL Samples removal check Combining LLV IQ values channel bits Weighting Barker Code Barker Channel Frame IQ values Coefficients QPSK values QPSK2LLV Code estimation Synchr COM plane UWB4SN, 04-11-2005, EFPL, Lausanne 12
Project Results Click here for Movie or here http://www.centrum21.de/C21/de/inpos/gotomovie.html UWB4SN, 04-11-2005, EFPL, Lausanne 13
Thank you for your attention! Info at: http:// http://www www.centrum21.de/ .centrum21.de/ Info at: http://www.imst.de http://www.imst.de romme<at>imst.de <at>imst.de romme UWB4SN, 04-11-2005, EFPL, Lausanne 14
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