26/06/01confidential. 26/06/01confidential ds2 profile and strategy ds2 technology chipsets...

26/06/01 Confidential

Visit AgendaVisit Agenda

Design of Systems Design of Systems on Siliconon Silicon


IndexIndex

•DS2 Profile and Strategy

•DS2 Technology•Chipsets milestones•Conclusions


DS2 Profile and DS2 Profile and StrategyStrategy


DS2 ProfileDS2 Profile

• Fabless silicon design house

• Mission: to become the leading supplier of IPR (silicon and software) for high speed Powerline Communications (PLC)

• Experienced in advanced communications chipsets: QAM, OFDM, FFT, IFFT, DSP, ADCs, DACs, etc.


DS2 ProfileDS2 Profile

• Incorporated 1998/February/15

• Experienced management and key personnel:IBM, HP, Philips, Matra-MHS, Telefónica, EC-R&D programs, INITEC,etc.

• Experience in state-of-the-art large critical projects


DS2 StrategyDS2 Strategy

DS2

DS2 is a fabless silicon design house.

Foundry

Selected foundries produce DS2 chipsets

OEM

DS2’s customers are OEMs who integrate DS2 chipsets

in their systems

... to whom DS2 sells and SUPPORTS

OEMs produce...

HE CPE

Home Gatewa

y

Customer Premises Equipment which is placed

in user’s devices in households

… and Home Gateways allowing

in-home LAN service

Utility

OEMs supply DS2 PLC and telecom equipment to

utilities

... and turn them into Network Service Providers...

End-User

... for a 3000 million End-Users market worldwide

Head Ends which are installed in each MV/LV

transformer



DS2

End-User

Utility

Systems with DS2 chipsets offer the best performance

in the market. Due to this

reason, utilities and end-users demand DS2

based systems



• Capitalize on company skills (communications, DSP, electronic design, silicon,etc.)

• Alliances and joint developments with customers:– Router and Telecom manufacturers– Silicon foundries, core providers – Electricity utilities– Electrical equipment supply



• Low cost through VLSI– Early partnership with semiconductor

manufacturers– 0.25 micron process with 8” wafers– Medium-long term: 0.18 micron process

with 12” wafers


DS2 TechnologyDS2 Technology


DS2 Powerline DS2 Powerline TopologyTopology

Home Gateway

Head End

Device with CPE


ServicesServices

• Voice and data over Powerline– Video on demand

• Up to 10 movies at the same time

– High-speed Internet access– Videoconferencing– VoIP– In-home LAN connection– iTV– Network games


Powerline advantagesPowerline advantages

• Lowest cost equipment compared to competitor technologies

• Ubiquitous due to electricity grid capillarity• No new cabling is needed• Shared bus means shared cost• New business opportunities diversifying activities• In-home LAN allowing multiple new applications• Real broadband access to home at the lowest

cost


Powerline ChannelPowerline Channel


Technology Technology descriptiondescription

• OFDM modulation

• Master / Slave MAC

• Access and in-home LAN services implemented

• Summary


OFDM ModulationOFDM Modulation

• Imperative need for speed. Competing against ADSL, Cable modem and LMDS.

• Imperative need for adaptiveness. Every Powerline is different, with lots of taps and multipath propagation.

• Imperative need for low cost.

Solution OFDMTransmission medium shared in

time and in frequency


OFDM ModulationOFDM Modulation

• Ideal for slow changing multipath channels with high time spread (Powerline case):

• No need for time equalization (complex FIR Filters).

• Simple frequency equalization (phase correction)• Best Bps/Hz performance

• Spectrally dense signal• Large number of carriers makes things easier:

• Synchronization is more robust and simple• Easier to adapt to notches and ingress• Better immunity to impulsive noise• Increase the robustness against frequency

selective fading channels


DS2 OFDMDS2 OFDM

• 1280 OFDM carriers

• Data rate :• Up to 27 Mbps in downstream channel• Up to 18 Mbps in upstream channel

• Data rate per subcarrier adaptable according SNR detected

• Nº bits per carrier : 0, 2, 4, 6 and 8• Different carriers transmit at different data rates

• Modulation efficiency up to 7,25 bps/Hz

• Overlapped subchannels : efficient use of the spectrum saving bandwidth


DS2 OFDM DS2 OFDM AdaptivenessAdaptiveness


MACMAC

• Efficiency: Do not pay for capacity unused.• Differentiated QoS: Multimedia.• Low latency: Voice over IP.• Variable bit rate: Packet oriented transmission.• Constant bit rate: Streaming media.

Solution Master/Slave

MAC


DS2 MACDS2 MAC

• Master slave MAC. Both up and down streams are controlled by master.

• Supports both variable and constant bit rates in both up and down streams as well as latency control:– VBR for intelligent resource allocation– CBR for streaming media.

• Very low-complexity implementation• Controlled QoS for each user


Access and In-home Access and In-home LANLAN

• Three different frequency ranges are used as evolving ETSI/CENELEC standard:

– LINK 1: Low frequency band for ACCESS service

– LINK 2: High frequency band for IN-HOME service

– LINK LAN: In-home service for access technologies

45 Mbs 45 Mbs 45 Mbs

10 Mhz 20 Mhz 30 Mhz

LINK1 LINK2 LINK LAN


Access and In-home Access and In-home LANLAN

• Frequency bands are fully programmable

• Hardware needed will be:– HE: Manager in LINK1, LINK LAN– CPE: LINK1,LINK2 and LINK LAN– Home Gateway: Manager in LINK2


Measures to ensure Measures to ensure security of powerline security of powerline

systemssystems

• We do not want our neighbours or strangers to eavesdrop

• 3 main security measures:– Unique identity– Powerline SNR nature– Encryption


Unique identityUnique identity

WAN

Slave1

Slave3

Slave2

Each Slave has an encrypted

unique address

Master grants permission to

recognised addresses

AddressesSlave 1

Slave 2

Communication

Communication is refused


Powerline SNR NaturePowerline SNR Nature

OFDM Modulation Scheme A

OFDM Modulation Scheme B

The Master shares the same modulation scheme

with each Slave

SNR conditions change along the powerline

Each Slave has SNR figures different from the rest. Therefore modulation

scheme is also different


EncryptionEncryption

• DS2 Chipsets provide support to encryption at the link layer

• Encryption adds higher security to the already existing system

High reliable and secure communication channel


ProgrammablePSD notches

complaints ?, RA´s ?

Bit loading automatically reduced on notches

Unique DS2 feature:Unique DS2 feature:Radiation avoidanceRadiation avoidance

NB-30 today FCC-levels when evident

NB-30 but more repeaters


Summary Summary PerformancePerformance

• Highest bit rates (up to 45 Mbps)• Highest efficiency (7,25 bps/Hz)• OFDM with 1280 carriers• Adaptive bpc depending on SNR• Lowest cost per bit (high integration)• Adaptive QoS (users and services needs)• IP and SNMP 100% compatible• Access and In-Home service• In-Home service for xDSL, cable or wireless

service


Product DescriptionProduct Description

• HEs, CPEs and Home Gateways have the same block diagram.

• DS2 chipsets integrate these different blocks.


Product DescriptionProduct Description

Data processingblock

Digital Front EndAnalog Front

End

LineCoupler


Digital Front EndAnalog Front

End

DISTRIBUTIONPOWER LINE

DIG

ITA

L IN

TER

FAC

E

Digital Interface interacts with incoming and outgoing

data

Packets are built adding error correction and other data OFDM digital modulation is

implementedInteraction with powerline in

the analogue fieldProtection and filter power signal with maximum power

transmission


Chipsets Chipsets MilestonesMilestones


DSS4200 (2Q01) Digital CPE

Integration RoadmapIntegration Roadmap


Digital Front End Analog FrontEnd

LineCoupler

Data processingblock Digital Front End Analog Front

End

DISTRIBUTION

POWERLINE

DIG

ITA

L IN

TER

FAC

E

DSS4200

DSS7500

Hermes CPE

Mixed Signal ASIC CPE


Digital Front End Analog FrontEnd

LineCoupler

Data processingblock Digital Front End Analog Front

End

DISTRIBUTION

POWERLINE

DIG

ITA

L IN

TER

FAC

E

DSS5100

DSS7500

Hermes HE

Mixed Signal

ASIC HE

CPE

HE

DSS5100 (3Q01) Digital HE DSS7500 (1Q02) AnalogueHermes (2Q02) optimized digitalApolo (2003) mixed signal


ConclusionsConclusions



• DS2 technology achieves peak speeds up to 45 Mbps with –50 dBm/Hz injected power and radiation levels well below FCC and NB30 limits.



• Highest performance implementation.

• Low radiation levels.

• Low cost implementation.

• Specification available to standardisation bodies and manufacturers of telecom equipment

• Supported in ETSI/CENELEC.

• Likely to become the de-facto standard

26/06/01confidential. 26/06/01confidential ds2 profile and strategy ds2 technology chipsets...

Documents

confidential slide

confidential ds2 ds2

confidential ds2 profile

frequency slide

confidential ideal

confidential voice

cpe slide

summary slide