A VDSL tutorial - DiVA portal

Frank Sjöberg

A VDSL Tutorial

2000:02

RESEARCH REPORT

Research report

Institutionen för SystemteknikAvdelningen för Signalbehandling

2000:02 • ISSN: 1402-1528 • ISRN: LTU-FR--00/02--SE

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915 Iuhtxhqf| Glylvlrq Gxsoh{lqj

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916 ]lsshu

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9161 ]LSSHU 64

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Iljxuh 914= Wkh ]lsshu sulqflsoh1

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Iljxuh 916= Sxovh0vkdslqj lq wkh wudqvplwwhu1

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9161 ]LSSHU 66

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Iljxuh 917= Zlqgrzlqj lq wkh uhfhlyhu1

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Iljxuh :14= H{dpsohv rq gl�huhqw UIL0fdqfhoohuv1

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:151 UIL LQJUHVV 6:

0 1 2 3 4 5 6 7 8 9 10 11−140

−130

−120

−110

−100

−90

−80

−70

−60

Corresponding DMT−tone frequency (MHz)

Pow

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ty (

dBm

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VDSL−SignalRFIWindowed RFIFEXT

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CentralOffice 150m 300m 450m 600m 1200m 1350m 1500m

NT1 NT2 NT3 NT4 NT10NT8 NT9

Iljxuh ;14= Glvwulexwhg fdeoh wrsrorj|1

6<

73 FKDSWHU ;1 SRZHU EDFN0RII

200 400 600 800 1000 1200 14000

10

20

30

40

50

60

70

Length (m)

bit r

ate

(Mbp

s)

DownstreamUpstream

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LIC64 kbps PCM

VDSL52 Mbps ATM / IP

POTS-splitter

Central Office

POTS-splitter

4 kHz

4 kHz

20 MHz20 MHz20 MHzVDSL

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A VDSL tutorial - DiVA portal