1UWB4SN, 04-11-2005, EFPL, Lausanne

A Low Datarate Localization System

IMST GmbH Carl-Friedrich-Gauß-Straße 2 D-47475 Kamp-Lintfort, Germany

Jac RommePhone: +49-28 42-981 465Fax: +49-28 42-981 499E-Mail: romme<at>imst.de

2UWB4SN, 04-11-2005, EFPL, Lausanne

Outline

UWB @ IMST Puls-On Project InformationSystem ConceptImplementationProject Results (Movie)

3UWB4SN, 04-11-2005, EFPL, Lausanne

UWB @ IMST: Goals with UWB Technology

Specialisation on applications

Low Data Rate (LDR)

Robust Transmission

Localisation

Application ScenariosSensor Mesh

Industrial Facilities, Control/Monitoring

Entertainment-Theatre

Emergency Services

Localisation part of general Concept

IPOS (Currently, WLAN based Localization System)

Other Location

calculation

UWB Location

calculation

WLAN Location

calculation

Application

Postprocessing/Data distribution

Raw WLAN data Raw ... dataRaw UWB

data

4UWB4SN, 04-11-2005, EFPL, Lausanne

UWB @ IMST: Activity Summary

Protected by NDAOngoingIndustryAntenna Development

„UWB communication and localisation inindoor environments for emergencyservices“

Implementation & system demonstration

2004-2007EU 6th FP

STRP 2nd Call

EUROPCOM

Propagation measurementsChannel models

2004-2008EU 6th FP

IP 1st Call

PULSERS (II)

„UWB communication and localisation in indoor environments“

2003-2005NRWZukunfts-wettbewerb

PULS-ON

100 Mbit Communications usingTransmitted Reference

Design & Implementation

2002-2004NRWZukunfts-wettbewerb

BISON

Propagation measurements / modelsAir interface / coexistenceSystem capacity, System performance

2000-2004EU 5th FPWHYLESS.COM

5UWB4SN, 04-11-2005, EFPL, Lausanne

Puls-On Project Scope

Partners: IMST, VCS Nachrichtentechnik AGDuration: 07/2003 – 05/2005Budget: IMST 950kEUR, VCS 300kEURFunding: IMST 35%, VCS 35%IMST: Radio Layer and PositioningVCS: Data Concentration & Application

6UWB4SN, 04-11-2005, EFPL, Lausanne

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

7UWB4SN, 04-11-2005, EFPL, Lausanne

Puls-On: System Concept

USB

RS-MNT

RS-OEPOM

GPS Receiver

USBRS-232

Elektronischer Kompass

USB

RS-MNT

RS-OEPOM

GPS Receiver

USBRS-232

Elektronischer Kompass

PWR

OK

WIC0ACT/CH0

ACT/CH1

WIC0ACT/CH0

ACT/CH1

ETHACT

COL

WLAN Access PointKS Darstellungs-Monitor

USB

RS-MNT

RS-OEPOM

GPS Receiver

USBRS-232

Elektronischer Kompass MS

KS-Server

Mobile Station

Base Station

ControlStation

Base Station

Base Station

8UWB4SN, 04-11-2005, EFPL, Lausanne

System Concept – Mobile Station

Packet wise transmissionPulse-duration: 10 ns QPSK-TR signalling2 Pulses/frame QPSK -> 2 bit/FrameFrame = 220 ns Packet length = 2000 Symbols or 0.44ms

500 Acquisition and Training Symbols1500 Data Symbols

Packet rate 2.5 Hz

PulseGenerator

PulseGenerator

IQ-mod 1IQ-mod 1

I1

Q1

IQ-mod 2IQ-mod 2

I2

Q2

Att1Att1

Att2Att2

DelayDelay

DAC1DAC1

I1

DAC2DAC2

Q1

DAC3DAC3

I2

DAC4DAC4

Q2

Control UnitControl Unit

+

AmplifierOut

Bandpasfilter

9UWB4SN, 04-11-2005, EFPL, Lausanne

System Concept – Reference Station

0 20 40 60 80 100 120 140 160 180-5

-4

-3

-2

-1

0

1

2

3

4

5

Θ [°]

arg(U

1-U2)[r

ad]

2 GHz2.1 GHz2.2 GHz2.3 GHz2.4 GHz2.5 GHz2.6 GHz2.7 GHz2.8 GHz2.9 GHz 3 GHz

Demodulate packets & Determine Angle Of Arrival.

Port 2

Φθ

x

y

z

Port 1

Incident plane waves from φ=90° and 0°≤θ≤180°hit the antenna system

Phase difference of signal measured at the ports of the antenna system

10UWB4SN, 04-11-2005, EFPL, Lausanne

Implementation – Reference Station

Distr. PCB

Delayline

PositioningFinger

Comm.Finger

Baseband PCB

USB USB

PC IMSTADCs RX-FIFO

Data & Ctrl

Data & Ctrl

AGCPCB

Power Supply

DACs

Data & Ctrl

8 analog signals

6 bit

HF and Baseband

11UWB4SN, 04-11-2005, EFPL, Lausanne

Implementation – Reference Station

Data & Ctrl

Data & Ctrl

Power Supply

Data & Ctrl

8 analog signals

6 bit

HF and Baseband PCBs

12UWB4SN, 04-11-2005, EFPL, Lausanne

Implementation – Reference Station

AOASamples

COMSamples

Resampler

Resampler

Periodicaladdition

Find LOSand outputthe related

Phase

Phase2AOA

Channelestimation

WeightedSum

Combining

BarkerCode

QPSK offsetremoval

FrameSynchr QPSK2LLV

Viterbi+CRCcheck DLL

PPM offsetestimation

AOA plane

COM plane

ppm offset

Samples

Samples

2 pulseAOA PDP

WeightingCoefficients

IQ values

IQ values

IQ values

LLVchannel

bits

LLV

Info bits

AOAAOA

Barker CodeQPSK values

Signal Processing

13UWB4SN, 04-11-2005, EFPL, Lausanne

Project Results

Click here for Movieor here

http://www.centrum21.de/C21/de/inpos/gotomovie.html

14UWB4SN, 04-11-2005, EFPL, Lausanne

Thank you for your attention!

Info at: Info at: http://http://wwwwww.centrum21.de/.centrum21.de/

http://www.imst.dehttp://www.imst.de

rommeromme<at>imst.de<at>imst.de