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Horizontaal
ADSL-VDSL Technology  related subjects: Digital modulation techniques, Networking, RF-electronics, TCP/IP
ADSL a short introduction of Asymmetric Digital Subscriber Line (ADSL) transmission technology, ADSL (Asymmetric Digital Subscriber Line) refers to a modulation scheme used to deliver network traffic to a customer's residence using the same copper twisted-pair wiring used for voice and ISDN service. It coexists with both services, while offering 6-8Mbps speeds downstream and up to 640kbps upstream
ADSL Basics (DMT) pdf file
ADSL frequency spectrum Frequency allocation
ADSL modem - internet configuration the 4 variants or options that one has when connecting a home or small office network to the Internet via an ADSL or Cable modem
ADSL Modem simulation ADSL Modem simulation
ADSL technology
ADSL technology Asymmetric Digital Subscriber Line, The main technologies used by the ADSL are: Discrete MultiTone, Code & Error Correction, Framing & Scrambling, ...
ADSL transmission applet Java applets simulate here ADSL-like transmissions ... Basically ADSL uses multiple carrier modulation : multiple QAM (Quadrature Amplitude modulation)
ADSL tutorial asymmetric digital subscriber line (ADSL) is a new modem technology that converts existing twisted-pair telephone lines into access paths for high-speed communications of various sorts
ADSL2 tutorial Asymmetric Digital Subscriber Line (ADSL), a modem technology, converts existing twisted-pair telephone lines into access paths for multimedia and high-speed data communications
ADSL tutorial ADSL transmits more than 6 Mbps to a subscriber, and as much as 640 kbps more in both directions
ADSL: tutorial the essential concepts involved in making an ADSL connection to the internet, pdf file
An introduction to DSL (Digital Subscriber Line), xDSL, HDSL (High-bit-rate Digital Subscriber Line), Single pair HDSL, SDSL, ADSL
Asymmetric Digital Subscriber Line (ADSL) Asymmetric digital subscriber line (ADSL) is a new modem technology that converts existing twisted-pair telephone lines into access paths for high-speed communications of various sorts
Cable Technologies
Digital Subscriber Line (DSL) Digital Subscriber Line (DSL), Asymmetric Digital Subscriber Line (ADSL), ADSL Technology, Very-High-Data-Rate Digital Subscriber Line (VDSL)
Digital Subscriber Line (DSL) Asymmetric Digital Subscriber Line, ADSL Capabilities, ADSL Technology, Signaling and Modulation, CAP and DMT Modulated ADSL, ADSL Standards and Associations, Additional DSL Technologies, SDSL, HDSL, HDSL-2, G.SHDSL, ISDN Digital Subscriber Line, VDSL
Digital Subscriber Line (DSL) pdf file
Digital Subscriber Lines and Cable Modems residential broadband networking, including ADSL, HDSL, VDSL, RADSL, cable modems, pdf file
DSL White Paper Digital Subscriber Line (DSL) is a broadband connection that uses the existing telephone line, pdf file
Setting up a wireless network 4 steps to set up your home wireless network, Choose your wireless equipment, Connect your wireless router, Configure your wireless router, Connect your computers
The Splitter in DSL Applications The Splitter in DSL Applications, pdf file
Horizontaal
VDSL Technology  related subjects: Digital modulation techniques, Networking, RF-electronics, TCP/IP
DSL Technology Evolution ADSL2/ADSL2plus/ADSL-RE/VDSL2, pdf file
ICT Regulation Toolkit
Standard VDSL Technology Overview of European (ETSI), North American (T1E1.4) and International (ITU-T) VDSL standard development, pdf file
Telecommunications Networks with VDSL2 VDSL2 (Very-High-Bit-Rate Digital Subscriber Line 2), G.993.2, is the newest and most advanced standard of xDSL broadband wireline communications. Designed to support the wide deployment of Triple Play services such as voice, video, data, high definition television (HDTV) and interactive gaming, VDSL2 enables operators and carriers to gradually, flexibly, and cost efficiently upgrade existing xDSL-infrastructure, ...
VDSL2 frequency spectrum doc file
VDSL2 frequency spectrum Telecommunications Networks with VDSL2
VDSL: Introduction to VDSL System VDSL System allows fastest data transmission among DSL technologies, pdf file
VDSL2: taking the wire to the limit
VDSL2 technology ADSL2plus is currently being deployed worldwide as the new mainstream broadband technology for residential and business customers. But at the same time, the industry is gearing up for the next step of the DSL evolution: VDSL2. This second version of the very high-speed digital subscriber line (VDSL) standard from ITU-T promises to deliver 100Mbps symmetrical traffic on short copper loops, VDSL: Very High Speed Digital Subscriber Line, pdf file
VDSL2 white paper
Very-High-Data-Rate Digital Subscriber Line (VDSL) VDSL is the highest-rate DSL technology available. Running at speeds of up to 52 Mbps, VDSL is the next generation of DSL, with higher throughput and simpler implementation requirements than ADSL, pdf file
Very-High-Data-Rate Digital Subscriber Line (VDSL) pdf file
VDSL2- Next important broadband technology ADSL2plus is currently being deployed worldwide as the new mainstream broadband technology for residential and business customers. But at the same time, the industry is gearing up for the next step of the DSL evolution:
VDSL2, pdf file
The Splitter in DSL Applications The Splitter in DSL Applications, pdf file
Horizontaal

ADSL frequency spectrum:

ADSL frequency spectrum


VDSL frequency spectrum (up to 30MHz):

 

xDSL Comparison table:

Technology

Upstream capacity

Downstream capacity

Maximum distance

BW Tone spacing Type Standard

ADSL

640 Kb/s

8 Mb/s

6 km

1.104 MHz 4.3125 KHz asymmetric G.992.1

ADSL2

1 Mb/s

12 Mb/s

3 km

1.104 MHz 4.3125 KHz asymmetric G.992.3

ADSL 2+

1 Mb/s

24 Mb/s

4.3 km

2.208 MHz 4.3125 KHz asymmetric G.992.5

VDSL

15 Mb/s

55 Mb/s

1.3 km

12 MHz 4.3125 KHz asymmetric or symmetric G.993.1
VDSL 2 100 Mb/s 100 Mb/s 0.6 km 30 MHz 8.625 KHz asymmetric or symmetric G.993.2

Remarks:
- xDSL means all type of DSL
- symmetric: downstream and upstream rates are the same.
- asymmetric: downstream rate is higher than the upstream rate
- VDSL2 BW bandplan configuration options: 8.5, 12, 17.7 and 30 MHz
- VDSL2 30 MHz bandplan: Upload: 25-138 KHz, 3.75-5.2 MHz, 8.5-21.567 MHz; Download: 138 KHz-3.75 MHz, 5.2-8.5 MHz, 21.567-30 MHz

 

 


 

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Last updated on: 2011-01-02 | Copyright © 2011-2013 Educypedia.

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