UWB Research Activities in Singapore

8/14/2019 UWB Research Activities in Singapore

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UWB R&D Activities inSingapore

Prof Lye Kin MunDeputy Executive Director (Industry)

Institute for Infocomm Research

IDA UWB Seminar 24 May 2004


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Outline IDAs UWB Programme

I2Rs Activities

A*STAR Thematic Strategic ResearchProgramme

Private Sector

Cellonics Inc.

Conclusions


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Infocomm Development Authority

Announced UWB Programme

on 25 Feb 2003

Set up UWB Friendly Zone inScience Park II

Conducting test, measurements &experiments in UWBFZ on interference

Participation in PULSERS (regulatory issues)

Local Convenor for A*STARs Thematic StrategicResearch programme


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I2R Goal pushing UWB technology frontier

Range

Data Rate

I2R UWB tec hno lo g y fro ntie r

Current UWB te chnology frontie r Current UWB technology frontier

I2R UWB technology frontier


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I2R Our technologies: deliver an UWB access point .

UWBaccess point

SpaceTime Codes +Spatial Mux:

Lower terminal complexityand longer transmission

range, given sametransmission power and

bandwidth efficiency

DigitalDigital BasebandBasebandBeamformingBeamforming ::

Longer transmissionLonger transmissionrange, even in nonrange, even in non --

LOSLOS multipathmultipath

environmentenvironmentSingle Reader estimatingSingle Reader estimating

Direction + TimeDirection + TimeOf Arrival:Of Arrival:

Simpler, more convenientSimpler, more convenient

location positioninglocation positioningoperationoperation


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I2R IEEE Standardisation Activities

Submitted UWB Alt-PHY proposal to IEEE 802.15.3a High RateWPAN

Joined subsequently as author member of Multi-Band OFDMAlliance(http://www.multibandofdm.org/ )

to unify existing UWB technologies to form the best possible

solution with co-existence and interoperability for IEEE 802.15.3aHR-WPAN Alt-PHY proposals

Active participation Study Group in IEEE 802.15.4a Low Rate

WPANCurrently performing measurement andmodelling in indoor office environment

Up to 30m range
http://www.multibandofdm.org/http://www.multibandofdm.org/http://www.multibandofdm.org/


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I2R IEEE Standardisation Activities


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I2R MBOA Technical Group Activities


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I2R Internal Core - High Rate UWB project

Objectives To demonstrate wireless

transmission of multimedia contentdownload / video streaming over extended range (2x over standardrange performance)

IP generated will be compliant toMBOA PHY specification v1.0

MBOA MAC specification v0.6or later version

MBOA MAC-PHY interfacespecification v0.7 or later version

FPGA demo in Q1/2005

Engineering expertise

- OFDM technology- Transceiver algorithms- IC design- Hardware prototyping- Medium Access Control- Firmware implementation


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I2R Internal Core - UWB High Rate RF Transceiver

Demonstrated in April 2003, an Ultrawideband(UWB) wireless linkthat is capable of transmitting and receiving data at 500Mbps, at arange of 4m with BER better than 10E-6 and conforming to theemission limits stipulated by FCC .


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I2R Internal Core - UWB antennas

x

z

Slot Ground

32mils RO4003

Strip

Slot

Ground

Feed line

x

y

32mm

21mm

L1

L2Wf

Wf

Wf

Wf1

L3

I2R has strong expertise in small antenna designs.In particular, several UWB antennae have beendeveloped and we were invited to give talks inIEEE conferences/workshops

One of I2Rs antenna on PCB


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I2R Internal Core - UWB localisation system

Project Features:- Position location with cm range of accuracy

- Low data rate

- Low power low cost

- Short range, multi-hop based co-operative localization


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I2R Low-rate, low-power UWB

WHISPER project- TechnoBridge, a joint collaboration with TRLabs (Canada)

System Requirementslow power consumptionlow data rateCoexist with other narrowband and UWB wireless devicesCapable of high precision ranging


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I2R Low-rate UWB - System design

For detailed information see: -

F Chin, W J Zhi and C C Ko, System Performance of IEE 802.15.4 Low Rate Wireless PAN using UWB asAlternate-PHY Layer ,PIMRC2003F Chin, W J Zhi and C C Ko, System Performance of UWB based Low Rate Wireless PAN ,Asilomar 2003

Bit-to-symConvertor

Code PosModulation

UWB analog modulator &

2-PPM pulse generator

3.1 GHz 10.6 GHz0.5 GHz

Transmitter

LNA

Baseband

chip

(orthog.

signal

detection,

mapping &

bit sequence

processing)

frequency

quad

mixer

LPF

BW = 500MHz

I

Q

Peak

Detector &

Sampler

LO

LPF

ADC

ADC

Receiver

Peak

Detector &

Sampler

FILTER

IEEE 802.15.4 Low Rate Wireless PAN using UWBas Alternate-PHY Layer

Reuse 802.15.4 standard PHY Layer codingscheme code position modulation (CPM)

2-PPM pulse transmission is used instead of Offset QPSK

Multiband approach is used only a 500 MHzband is used

Simple peak detector is used in receiver


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Low-rate UWB Band plan & Bit rateI2R

A modified 2-level CPM codingscheme (CPM + CPM offerslonger code length per bit) is

proposed to extend range atlower data rateMultiband approach is used only a 500 MHz band within

3.1 10.6 GHz is used


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I2R Low-rate UWB Range performance (simulation)

For 10% Packet error rate (128-bit packet size), range performance for 1-level CPM and2-level CPM coding scheme are ~ 5m and ~ 15m respectivelyIEEE 802.15.3a UWB Channel Model is used


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A*STAR Thematic Strategic Research ProgrammeUWB+pervasive computing

The threefold objective of this workshop was to: Ascertain the interest and research development levels and

capabilities of the local research community in UWB and PervasiveComputing Identify focus areas where there are critical mass of relevantexpertise and experience Determine whether these critical mass areas can meld together in acompelling application framework to exploit the potential synergies ofUWB and Pervasive Computing.

Organisations involved :

IDA, I2

R, NUS (ECE), NTU (EEE, SCE), IME


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Relevant Research Areas Identified

UWB technology elements :Ultra-wideband antennas, MIMO antenna systems, propagation models,PHY/MAC design, and interference mitigation techniques.

UWB system implementations :Single band/multi-band receiver and transmitter architecture, CMOS, SiGedesign, advanced packaging techniques, high rate/low rate design trade-offs.

Protocols and Networking :Dynamic service discovery, protocol/domain handover, mobile ad-hocnetworks, mobile quality of service, pervasive middleware, powerControl.

Novel applications of pervasive computing enabledby UWB technology .E.g., body area networking, location and context aware computing.


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Private Sector R&D

Many MNCs and SMEs with R&D facilities inSingapore are interested or working in thefollowing areas:

Wireless USB Replacement technology(MBOA)Position location and Ranging

Chipset designMilitary applications


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Cellonics UWB

Biological Cell ModelArvanitaki (1939)

Cell fast wave response

fast wave

slow wave


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The Cellonics TM Technique

Slow Wave

Fast WaveCellonics TM ElementInput

Output


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An Exampleinput waveform

Cellonics TM Circuit

+

-

L

Vin

Tunnel

Diode

V

i

i

Voutput waveformTunnel Diode

I-V Characteristic


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Cellonics TM Element Features

INCREDIBLY SIMPLE INCREDIBLY SIMPLE

SUPER SMALL SIZE SUPER SMALL SIZE

CONSUME VERY LITTLE POWERCONSUME VERY LITTLE POWER

LOW COST LOW COST

CAN BE MASSIVELY PARALLELCAN BE MASSIVELY PARALLEL

WIDESPREAD APPLICATIONS WIDESPREAD APPLICATIONS

Op-Amp

Inductor, Tunnel Diode


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Comparison of Receiver ArchitectureConventionalConventional BluetoothBluetooth transceivertransceiver

LNA Cellonics

Receiver

Decision

device

+

-

L

Vin

TunnelDiode

V

i

Envelope

detector

TX

LNA CellonicsTransmitter

ONE symbol/pulseONE symbol/pulse

VERY simpleVERY simple

Does not requireDoes not require psecpsec ..resolution at theresolution at thereceiverreceiver

Frequency translationFrequency translationoptionoption+

-

L

Vin

Tunnel

Diode

V

i

OR TX

RX

UWB transceiver architectureUWB transceiver architecture

ONE symbol/1000 pulses

Complex, require integrationin psec resolution

Source: Intel Technology Journal


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Cellonics UWB Technology

Benefits of using Cellonics frequency translation method at thetransmitter:

Provide option to occupy only certain desired frequencyspectrum, no energy wasted during transmission

Minimize interference with other devices via frequency hoppingwithin 3-10 GHz band by changing the centre frequency of UWBsignal


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Conventional Correlator vs Cellonics

ConventionalConventional CorrelatorCorrelator CellonicsCellonics

Matching signal

Incoming signal

frame

Require to match incomingsignal

Precise timing (in the order of pulse width, usually hundredsof picosecond)

Require thousand of pulses to

decode 1 symbol

No matching signal required

Timing is in the order of framerate(up to the system designer)

Require only ONE pulse todecode 1 symbol

V

I

N-Curve


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Conclusion

UWB has been identified by National Agencies to

be of strategic importance; viz. IDA and A*STAR.

Public sector research is carried out byUniversities and Research Institutes in wide rangeof areas.

Private sector research is relatively smaller but picking up.

Documents

UWB Research Activities in Singapore