G.fast

Further, Faster and

more Flexible

Ronan Kelly

CTO

EMEA

APA

C20

16

2016 © ADTRAN, Inc. 2

EU Commission VHC Proposals

The Gigabit Society Communication is a ‘chapeau document’ setting out the overall vision

A new Digital Agenda statement in effect

It sets a new target of Gigabit connectivity for all main socio-economic drivers.

It updates the current targets to 100Mbps universal for 2020 upgradeable to 1 Gbps by 2025.

The document’s focus is generally on ‘very high-capacity networks’

2016 © ADTRAN, Inc.

EU Commission Implications

The intent of the Commission is to move to FTTP/FTTB.

CATV networks meet the performance conditions.

G.FAST can meet the performance conditions.

VDSL2 doesn’t meet the performance conditions.

Regulatory response? State aid qualifications?

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4

85

2016 © ADTRAN, Inc.

4th

G.fast

DOCSIS 3.1

10G-EPON XGS-PON, NG-PON2

Broadband ADSL

DOCSIS1.0

Digital Voice + Text & 802.11b

Evolution of Access

1990s 2000s 2010s 2020s

Analog Mobile Voice

Analog Dial Up

2nd Gen

3rd Gen

1st Gen

Mobile Internet + MMS & 802.11G

ADSL2+ & VDSL

DOCSIS2.0 Digital TV

Mobile Broadband, All IP & 802.11n /ac

Vectored VDSL

DOCSIS 3.0

Massive Scale, Low Latency, Ultrafast

Wave II 802.11ac

5th

Capacity

Analog TV

Fibre

Wireless

Copper

Coax

BPON

EPON

GPON

GPON & XG-PON1

Decade Long Cycles

2016 © ADTRAN, Inc.

3dB SNR Margin

Higher Bit Loading

Increased Launch Power <30Mhz

Lower Noise Floor

Vectoring Improvements

Wider Bandwidth Support (212Mhz)

Coax Deployments

DTA – Independent and Collective

Bonding

Non Linear Precoding

G.fast Innovations & Amendments

2016 © ADTRAN, Inc.

7

6dB Field data Smoothed Curve

Simulated 3dB Lines

New Trend line extrapolated to

3dB margin

Actual 3dB Lab Performance

Moving from 6dB to 3dB SnR Margin

7

Real Gains on Longer Loops

50Mbps to 100Mbps Improvements

Negligible impact on stability

SRA behaves extremely well

2016 © ADTRAN, Inc.

G.fast – Higher Bit Loading

8

Small Improvements

Applies across entire Spectrum

12-15% Maximum improvement

Short Loops Gain most benefit

b

i

t

s

2016 © ADTRAN, Inc.

Increasing Transmit Power to 8dBm

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Mixed Results

Improves Performance @200m+

Lowers performance <100M

Worth Approx. 30Mbps @300m

2016 © ADTRAN, Inc.

G.fast Performance Comparison TP and Coax

0,0

100,0

200,0

300,0

400,0

500,0

600,0

700,0

800,0

900,0

50 250 450 650 850 1050 1250 1450 1650 1850

Do

wn

str

eam

Th

rou

gh

pu

t R

ate

(M

bp

s)

Reach (ft)

G.fast (TP), G.fast (Coax) Performance @106MHz

G.Fast 106 MHz TP

10

G.Fast 106 MHz Coax

VDSL2 35b

VDSL2 17a

15 75 140 200 260 320 380 440 500 560

2016 © ADTRAN, Inc.

• Enable Dynamic Adjustment of the US/DS Rates

• Independent Operation for Coax or single pair TP

• Symmetric-Like Gigabit Broadband

• Coordinated DTA for Twisted pair bundles

DTA – Introducing Dynamic Time Allocation

TDD Upstream/Downstream Ratio

Upload Rate

Download Rate

User Driven BehaviorMillisecond Transitions

Time

2016 © ADTRAN, Inc.

VDSL2, Coexistance

Full Spectrum G.fast

550Mbps @ 200 Meters

21-106MHz G.fast 330Mbps @

200 meters

35b Supervectoring

270Mbps @ 200 meters

60 120 180 240 300 365 425 485 550 610 670 730

SuperVectoring

2016 © ADTRAN, Inc.

New Generation Chipsets in 2017

Lower Noise Floor

Vectoring Improvements24, 48 and 96 Port VectoringBetter Performing Vectoring Engines

Double Bandwidth – 106Mhz to 212Mhz

Big Step in performance

Short Loops / Coax

212Mhz -> 424Mhz Experimentation

8-port DFE

Distributed Vectoring

up to 96 lines

212MHz support

Octal Port DFE

DFE Gen 2

8-port DFE +

integrated AFE

Distributed Vectoring

up to 24 lines

212MHz support

Vectoring Engine

48 lines per device

Scalable to 96 lines

2MHz 106Mhz 212Mhz

2016 © ADTRAN, Inc.

G.fast Performance: Adding It All Together

0

500

1000

1500

2000

2500

3000

3500

4000

Target Ammend 1 (106Mhz)Ammend 2 (106Mhz)Ammend 3 (212Mhz)

Single Twisted Pair Coax Cable Dual Twisted Pair

2013 2014 2015 2016 2017

100 Metre Performance (Aggregate in Mbps)

FTTH Like Gigabit Broadband

2016 © ADTRAN, Inc.

Summary

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• Consumer Appetite for More Capacity and New Service Innovation

Persists

• EU Commission Gigabit Society Targets have Technology Choice

Implications

• FTTH wherever Possible to Future Proof Investments

• Full Spectrum G.fast to Leapfrog EU Peers and Position Greece at

the Forefront of Digital Europe

Thank You

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