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