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Dr. Papandriopoulos's Miracle DSL Cure!
Australian researcher adds more detail to website...
by Karl Bode Friday 26-Oct-2007 tags: dsl · bandwidth · networking
The Australian PhD whose advancement in DSL technology we discussed earlier this week has posted additional information to a new website FAQ section for those interested. We've been talking with Dr. John Papandriopoulos in the hopes of getting our head around his new technology, and we hope to post that discussion for you shortly. Until then, the FAQ explores how the algorithm he's developed manages to minimize crosstalk interference, allowing carriers to maximize performance of DSL lines.

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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. . . The model is embedded into a mathematical optimization problem that aims to maximize the data-rate of the network (other variations also exist) systematically. It results in a spectrum for each user that is shaped appropriately to minimize interference and maximize data-rate.

The good doctor points to other research in his field into 100Gbps DSL, but says his solution could offer a far more immediate boost to DSL technology (potentially within several years, should carriers bite).

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SB7785

join:2007-08-15
South Richmond Hill, NY

Nobel Prize...maybe, in 3-4 years

The promise of this is great, considering most DSL isn't above 3mb. But where will we be in a few years from now. Will this even be be relevant.

lordfly

join:2000-10-12
Homestead, FL

Re: Nobel Prize...maybe, in 3-4 years

I was thinking along the same lines. The term immediate to me means less than 6 months, not more than 2 years. This country moves way too slow.

brandon
Some truth included in this post.
Premium
join:2003-03-31
Hurley, MS

1 edit

Re: Nobel Prize...maybe, in 3-4 years

said by lordfly:

I was thinking along the same lines. The term immediate to me means less than 6 months, not more than 2 years. This country moves way too slow.
And the term immediate means to me "right NOW," as in, I need the fire department immediately because my house is burning down. I sure hope they wouldn't show up in 6 months, as you describe.

The point is not that I think they should deploy this technology within the next 5 minutes, the point is that for a project of this magnitude, 2 years really is in the immediate future. Surprisingly, immediate is relative.

fuzz
Fuzz
Premium
join:2000-06-05
FuzzLand

Re: Nobel Prize...maybe, in 3-4 years

quote:
immediate is relative.

Kind of like "unlimited".
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fuzz
BosstonesOwn

join:2002-12-15
Everett, MA
Reviews:
·Comcast
Yeah it will be relevant for at least the next 10 years. Look at At&t Uverse.

Verizon may bite for MDU's , and world wide carriers may use it to expand their speeds, but seeing as only the US seems to be in a slow paced arms race I doubt many will need it in the US.

This could really make an impact in places like South America, where WiMax seems to be getting popular to those who can afford it. They could feed the towers on DSL on the cheap I suppose.

Other then that I think the US and the Nerds here have basically condemned dsl to the basement of technologies. After all we all want fiber !
--
"It's always funny until someone gets hurt......and then it's absolutely friggin' hysterical!"

alchav

join:2002-05-17
Palm Desert, CA

Fiber, Copper........Fiber all the way!

said by BosstonesOwn:

Other than that I think the US and the Nerds here have basically condemned dsl to the basement of technologies. After all we all want fiber !
This is a good discovery, but I think a little too late. AT&T might jump on it, to bail out it's U-Verse, but it still has less of a limit than Fiber. If a Company wants to plan for the future of it's Infrastructure, it has to be Fiber in order to succeed.
axus

join:2001-06-18
Washington, DC
Reviews:
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Re: Fiber, Copper........Fiber all the way!

Agreed, however I think anything that promises more bandwidth is a good thing.

The main benefit I can see is for rural areas that will be ignored, but will have copper lines as long as the government requires. I have deep suspicion that they will have FiOS in 4 years. I wonder, will we get to the point where we stop the USF and no provider will service people in middle America, even for POTS?

supergirl

join:2007-03-20
Pensacola, FL
said by SB7785:

The promise of this is great, considering most DSL isn't above 3mb. But where will we be in a few years from now. Will this even be be relevant.
This kid is nuts. You still have to have the plant to accomodate such connections. I really only see FIOS and DOSCIS 3.0 achieving huge connections. Even then, what do you need with more than 20 down? 20 down works great in Korea. Japan has 50 down.

And, if the wiring in the house is bad, you gotta replace that too. My wiring is bad so Cox didn't even use it. I only need one phone and a fax connection. So, if you have to replace loaded copper and inside wiring, why not just install FTTH?
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Shamayim
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1 edit

Re: Nobel Prize...maybe, in 3-4 years

said by supergirl:

what do you need with more than 20 down? . . . Japan has 50 down.

Try telling that to Japan and see if they want to roll back to 20.
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whiteyonenh

join:2004-08-09
Keene, NH

1 edit

100Gbps DSL?

What I want to know is what is this guy smoking?

He's got to be crazy thinking that you can get 100Gbps over DSL at any event.

We still haven't got anything faster than 1Gbps over copper (Ethernet), which brings up the point in how this is going to be accomplished with 1-pair of wires compared to the 4-pairs in Ethernet. I wouldn't say it's totally impossible, but I will say insanely improbable.

I'm thinking some sort of smoke and mirrors trick?

supernac

join:2003-03-26
Springfield, MO

Re: 100Gbps DSL?

I believe you can get 10GigE nowadays.

wifi4milez
Big Russ, 1918 to 2008. Rest in Peace

join:2004-08-07
New York, NY

Re: 100Gbps DSL?

said by supernac:

I believe you can get 10GigE nowadays.
10GigE is now a standard offering by most telcos.
--
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en102
Canadian, eh?

join:2001-01-26
Valencia, CA
100 Gbps DSL at 5ft, in a lab environment.
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Canada = Hollywood North

supernac

join:2003-03-26
Springfield, MO
Ethernet only uses 2 pairs if I remember right.
BosstonesOwn

join:2002-12-15
Everett, MA
Reviews:
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Re: 100Gbps DSL?

said by supernac:

Ethernet only uses 2 pairs if I remember right.
Depends gig ethernet uses all 4 pairs now, 100 mbit and 10 mbit use 2 pairs.

»www.commsdesign.com/main/9808fe1.htm
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said by whiteyonenh:

What I want to know is what is this guy smoking?

He's got to be crazy thinking that you can get 100Gbps over DSL at any event.
I know huh!!! You're right up there with those people saying "those guys are nuts!! You can't get anything above 33.6 kbps !!! pfft... high speed internet... and my mother sucks rain boots"... :P

IOW, don't be so quick to tell people they are nuts.. otherwise, we'd still be in horse drawn carriages traveling across the country too. Don't think we know it all.. there is still SO much more to be discovered.
--
"Complaining is the least path of resistance for the self-serving, the lazy, and I’m told it’s a woman’s prerogative..."

XBL2009
------

join:2001-01-03
Chicago, IL

Vaporware

Vaporware once agian at a time when we need REAL technology like Verizon's 20/20 fios plan.

lrtc6

join:2004-06-05
Toronto

Re: Vaporware

it's research not a product!

morbo
Complete Your Transaction

join:2002-01-22
00000

1 edit

coincidence?


so, faster DSL huh? great...
oh man. i just realized what bothered me about that photo of this guy. check out the eerie similarities.

exocet_cm
You delete it, I'll find it
Premium
join:2003-03-23
New Orleans, LA
kudos:2

Re: coincidence?

said by morbo:

oh man. i just realized what bothered me about that photo of this guy. check out the eerie similarities.
Except.... that is a woman.

Oh wait, OH MAN!
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hoyleysox

join:2003-11-07
Long Beach, CA

layman's terms

short on specifics

Prevent one copper wire in a bundle from interfering with its neighbor. Would shielding the copper wires achieve the same result?

I'm calling shenanigans on this story. Not getting excited about this until I see evidence.

I'm no telecom engineer, but wanted to read the doctoral thesis but it he can't share, probably because it is not _approved_ begging the question - why does Karl refer to the subject as "_Dr. Panadriopolos" _and_ mention that he is a student. Call (Second phd? If so get a job quick). Unethical to refer to yourself as doctor if you are not.

No mention of peer approval - just a plug for startup. Caveat emptor with this ipo.

But Mr papandiopolous and his associate professor share great photos »www.ee.unimelb.edu.au/staff/jse/

bbr did a great job publicizing Comcast's packet discrimination practices, but this piece smells sensational. Expect higher quality pieces to make the front page news of bbr.
Oh well, I enjoy reading about other dubious claims like Kushnik's bridge buying.

Mike
Premium,Mod
join:2000-09-17
Pittsburgh, PA

Re: layman's terms

He has his PhD. He's not a student.
hoyleysox

join:2003-11-07
Long Beach, CA

Re: layman's terms

The headline says phd student. I'm getting semantic here, but is it ok ediquette to call someone doctor immediately after they submitted their thesis? don't know if that is the case here, not going to check. Don't know when _exactly_ it is appropriate to apply that title either.

Last time I read the headline I remember a stronger endorsement from bbr. The writeup looks fair now. These guy probably have a good idea and there is no such thing as bad publicity. communication technology is awesome, but I'm always sceptical. I want to read more.

Mike
Premium,Mod
join:2000-09-17
Pittsburgh, PA

Re: layman's terms

After you defend it you are technically a doctor of ~

Uh... sure.

Keep in mind THIS blurb from his website:

Research by Prof. John Cioffi's group at Stanford University has recently concentrated on the next-wave of DSL technology, that can offer speeds of 1-2Gbps over copper. That research, however, is likely to be many more years away from implementation and deployment. Our technology can assist with raising broadband speeds over DSL in the much shorter term.
Sounds to me like they're promising high speed DSL connections... when the next High Speed offering is actually invented. Call me skeptical, but it sounds like they won't be helping current DSL technology much at all. He never did provide any evidence, let alone any CLAIM of increased speed on existing technologies... only this:

Our research may be applied to current-day ADSL2+ and VDSL networks to bring speeds closer to the theoretical maximum without any major changes to end-user modem equipment. For the full benefit of our technology, more substantial changes may be required.
It's not going to get much faster folks...

Sounds to me like all they're doing is blowing smoke to get their IP included in the next version of DSL. You aren't going to get more than a few megabits out of your current crappy DSL.
Ressurrector

join:2007-11-13

Conspiracy Exposed!!!

I am no member here but this is an interesting post I wanna reply to..

I been screaming for years to friends that cable and dsl connections AS THEY ARE right now are capable of 100 MBPS

Now... they can holler "crosstalk" and various other horse BS all they want to BUT it all comes back to *drum roll* money...

Years ago hackers could "uncap" cable or dsl modems and reach speeds approaching 100 MBPS.......till they were caught..... of course it was told that it affected other connections bla bla but I believe it was propaganda...... especially now considering that kids in south korea own us on speed.........Proof alone.......

BUT why give you 100 mbps when they can "upgrade" your speed every year a mbps?????? start small and build to the 100 slowly.....till they reach a 100 or a new technology comes first.........whichever

The reason your seeing foreign countries like japan and sweden with 10 mbps UP and DOWN for what we pay for 3 is NOT as they would lead you to believe "they are such smaller countries its easier to roll out new tech" its ALL MONEY this country has gone corporate greedy to the tenth power..it can and WILL capitolize on ANYTHING they can make a buck on..pretty pityfull when the value of the US dollar is so low foreign people dont even want it now...

I also believe almost the same operation is going on with X86 PC chip technology CPU processor chips......they KNEW exactly how far they could take this chip tech TEN years ago .....but again.slowly trickle you up to 3 ghz THEN when they can NOT go no faster what do they do??? start stacking them........now its dual, triple ,quad core.....whatever......

when yall are bored sometime google "how bellsouth stole our digital future"

basically remember years and years ago the "information superhighway" well it ain't the internet........it was a FIBER OPTIC network that they promised to build and sapped everyone THEN gave us DSL to use their existing infastructure.......

although PROBABLY not near as refined as today just imagine sitting on your pc surfing along at 100 MBPS and enjoying the muscle of your 2.5 ghz machine in 1996!!!!!!!!!

Whats more fantasy??? the thought of what I just said?? OR the thought of living in a world where money is as worthless as the paper its printed on??? How bout a world where energy was made free by the fantastic inventions of Nikola Tesla and oil wasn't 100 dollars a barrell........

we can dream can't we?....................

VegasMan
Are We There Yet?
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join:2002-11-17
Schaumburg, IL

I've heard this tune before

Hey everybody it's Jesse from Jesse and the Rippers.
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CylonRed
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join:2000-07-06
Bloom County

I am willing to bet that...

This guy: »discovermagazine.com/2007/nov/th···internet will probably have a more meaningful way to speed up the internet....
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Brian

Free health care is 100% a misnomer - it is not free and never will be free.

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