Feeds

Aussie boffin turbo charges copper broadband

Who needs fibre?

Beginner's guide to SSL certificates

An Aussie PhD student has developed an algorithm that he says can turbo charge an ordinary copper phone line to deliver downloads at 200Mbit/s.

John Papandriopoulos of the Universtity of Melbourne has patented maths he did for his thesis last year on "Dynamic Spectrum Management" (DSM). The algorithm aims to stomp crosstalk interference on DSL, a major reason why current "up to" 8Mbit/s ADSL usually splutters to between 3 and 4Mbit/s.

We'll let the good doctor do the explaining:

We formulate a (standard) model for how DSLs attain their data-rate, considering crosstalk interference effects. We exploit the fact that interference varies across the frequency spectrum, and that if we are clever about the way in which we allocate transmission power amongst the various frequency bands, we can manage the interference between (strongly) coupled lines. For example, one user that interferes strongly with others within a band may be "turned off" within that band to avoid damaging the other lines, consequently raising the overall network rate.

Papandriopoulos says the work could be applied to ADSL2+ broadband - the type BT is rolling out in its 21CN upgrade - to bring it closer to its theoretical maximum speed. Substantial kit changes would be needed to get the full benefit, however.

Melbourne University's technology spin out tentacle is aiming to flog the DSM work for commercialisation. Papandriopoulos' home page is here. ®

Security for virtualized datacentres

More from The Register

next story
It's Big, it's Blue... it's simply FABLESS! IBM's chip-free future
Or why the reversal of globalisation ain't gonna 'appen
'Hmm, why CAN'T I run a water pipe through that rack of media servers?'
Leaving Las Vegas for Armenia kludging and Dubai dune bashing
Microsoft and Dell’s cloud in a box: Instant Azure for the data centre
A less painful way to run Microsoft’s private cloud
Facebook slurps 'paste sites' for STOLEN passwords, sprinkles on hash and salt
Zuck's ad empire DOESN'T see details in plain text. Phew!
CAGE MATCH: Microsoft, Dell open co-located bit barns in Oz
Whole new species of XaaS spawning in the antipodes
AWS pulls desktop-as-a-service from the PC
Support for PCoIP protocol means zero clients can run cloudy desktops
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.