ReDeSign – FP7 Project for Cable Industry

Extending Lifetime of HFC Networks

ReDeSign – FP7 Project for Cable Industry

Maciej MuzalewskiBusiness Development Director

„Extending Lifetime of HFC Networks”, 14-15 October 2010, Ohrid

Project Consortium

• Research project funded by the European Commission under the 7th Framework Program (FP7)

• Partnership between – Manufacturers:

• Alcatel-Lucent (B)

• VECTOR (PL)

• BLANKOM Digital (D)

– Operators• Zon TV Cabo (P)

• Telenet (B) (2008 only)

• ANGA (D)

– Research institutes• TU Braunschweig (D)

• TNO (NL)

• Timing: January 2008 – June 2010


Cooperation and Liaison Partners

• Close cooperation with European Cable operators

– Detailed questionnaire on future development of services and technical requirements with responses from 1/3 operators

– 5 Operators’ Forum meetings with MSOs representing more than 50% of subscribers in Europe participating

• Close alignment with standardisation processes

– Formal liaisons with DVB, CENELEC and SCTE Europe


6 Reference architectures describe the European cable landscape

• In terms of subscribers, the cable landscape in Europe is dominated by networks with relatively large fibre nodes and tree-and-branch or hybrid access networks

Larger nodes, tree-and-branch

Larger nodes, hybrid

Smaller nodes, hybrid

Smaller nodes, star

Larger nodes, star

Smaller nodes, tree-and-branch

Reference architectures by # operators Reference architectures by # subscribers


Capacity shortages will occur earlier in networks with larger fibre nodes

Average DS Bandwidth evolution: Large fibre nodes

0

1000

2000

3000

4000

5000

6000

7000

8000

2008 2009 - 2010 2011 - 2013 2014 - 2018

Time

Ba

nd

wid

th /

co

ax

se

gm

en

t [M

bp

s]

Internet

VoIP

VOD HD

VOD SD

SDV HDTV

SDV SD TV

Digital HD TV

Digital SD TV

Analogue TV

DS Bandwidth till 862 MHz




Not relevant Highly relevantNetwork segmentation

DVB-C2

Statistical multiplexing

QAM sharingAnalogue switch off

Switching (SDV)

Extensions to1 GHzExtensions beyond1 GHz

More bandwidth per user

More efficient usage of available bandwidth

More efficient usage of available channels

Increasing the available bandwidth in the network

Relatively

expensive and

longer term

upgrading

process

Looking at the short term, new modulation technologies are generally preferred

Operator preferences with respect to upgrading technologies(emerging from reseach carried out by ReDeSign among European cable operators)


Higher modulation level requires better C/N

Source : Christoph Schaaf, KDG New Technologies,

Chairman DVB TM-C2

2nd ReDeSign Operator Forum, Status DVB-C2 project


16348

QAM

DVB-C2

Higher output level to allow for more efficient modulation schemes

• To reach required better C/N ratio

65536

QAM

DVB-C2

+ 12dB

Backoff

-12dB

+ 6dB

4096

QAM

DVB-C21024

QAM

DVB-C2

256

QAM

DVB-C

64

QAM

DVB-C

- 6dB - 6dB

0dB

PAL

system

level

Noise and intermodulation floor

Source : Christoph Schaaf, KDG New Technologies,

Chairman DVB TM-C2

2nd ReDeSign Operator Forum, Status DVB-C2 project


Advantages of new Gallium Nitride technology

• New generation of semiconductor device technology

• Daylight LED’s, Blue-ray lasers and high power RF amplifiers

• Wide band gap: GaN-3.4 eV, GaAs-1.4 eV, Si-1.2 eV

• Higher operational temperatures without degradation

• Higher operating voltages than GaAs FETs

• 10 times higher power density @ wide bandwidth (up to 4GHz)

• 2 x better thermal conductivity than GaAs

• Higher output level + Robustness + Thermal stability


Next Generation of RF amplifiers

• New Distribution Amplifier for Next Generation Cable Networks

• Optimized for full digital or mixed digital/analog load

• Very high operational RF output level

• Increased frequency range in DS/US

• Electronic non signal-interrupting adjustment

• Remote regulation and monitoring capabilities

• Ingress robustness

• Power efficiency

• Cost effectiveness ( CapEx & OpEx )


BETA PRO 33G - Product definition

Current passing per port 10A

2 active GaN high

power outputs

ingress

controll

Up to 100

MHz / US

Electronic

adjustment

Power Factor Corrector

1 GHz / DS

Network Managenent Transponder


96 QAM 256

Composite Intermodulation Noise Ratio

Noise and intermodulation floor (produced by QAM signals)

1 GHz

CIN

(dB

)

System signal level

( flat or tilted )

96 x

QAM

256

A A P(f)

Spectrum

analyser

Notch

filterBandpass

filterDUT


CINR comparison of GaN amplifier vs. best available GaAs amplifier


Comparison of GaN amplifier vs. GaAs amplifier


BETA PRO 33G benefits

GaN GaAs GaAs

≈

• 3 dB higher output level / same power consumption

• GaN – 115 dBµV, GaAs – 112 dBµV ( flat output)

• 43 dB Gain ( 3 dB higher ) @ 1 GHz in DS

• 23 dB Gain in US

• Improved quality of Diplex Filters


BETA PRO 33G benefits

• GaN technology

• 1 GHz in DS / up to 100 MHz in US

• Two active outputs

• Electronic adjustment

• Optional NMS transponder

• Efficient surge protection

• Power Factor Corrector

• 10 A power passing

• IP 67 compact housing

• Same technology to be implemented into Optical Node for

Fiber Deep applications


Case study for Fiber Deep and N+1 upgrade

• Fiber Deep and Node+1 network up-grade

• Cost estimation for active network components

• Different architectures high/low-medium density

• Nodes with 1 or 2 active outputs

• Increasing output levels from 114 to 116 dBµV


Case study conclusions

For green field networks :

• Node+1 architecture – 8% to 23% reduction of number of distribution amplifiers

• Fiber Deep (Node+0) – 9% to 11 % reduction of number of the optical nodes

• CapEx and OpEx reduction

For brown field networks :

• Fixed locations for active components (street cabinets, powering, cables)

• No reduction of number of active components

• Unproblematic up-grade to 1 GHz (higher gain and output level)

• 100% no re-spacing of active devices


Conclusions

• Implementation of Gallium Nitride technology in output stages of RF amplifiers and Optical Nodes gives significant benefits to the cable industry

• New GaN semiconductor provides higher robustness and thermal stability over existing GaAs technology

• The highest available RF output signal level allows Cable Operators to reduce CapEx and OpEx up to 20% while implementing Fiber Deep or fiber extensive ( Node + 1 ) architectures

• In brown field networks GaN technology supports 1GHz bandwidth extensions and/or implementation of more advanced modulation techniques in the network. Like DVB-C2

podpis

Thank you for your attention!

[email protected]

www.vector.com.pl

ReDeSign – FP7 Project for Cable Industry

Technology

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