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Maybe not 'a scam artist', but a fscking good salesman of himself. I went to his home page at http://jpap.andriopo.ulos.org/ and saw very much of a sales-show of oneself, much more than a home page of a scientist.
While I was pondering about the feasibility of his undertaking, his home page made me wonder. I downloaded and read the article, and found some snake-oil.
The article here sounds like an 'add-on', whereas the whole thing is a 'replace by'. Call it PAP-ADSL, or whatever you like. Meaning, you need new technology on both ends.

Plus, but here I am not able to contribute soundly due to my lack of knowledge in the actual last line parameters, the idea is based on user-specific allocations on the neighbouring lines, he uses 2x4 users. I have no clue if this is realistic, maybe it is very much, maybe it is not. As I said, w.r.t. the latter I am clueless.
I permit myself, though, to question the outset when the technology depends on the other users (cf cable modem) and their usage, instead of an approach independent of neighbouring users.

Finally, also this is limited to my local experience, here the limit is usually not the last mile, but international line overload. Anything not coming from Akamai or Singapore comes in slower than our ADSL link permits. And with a sustainable data rate available only from these sources, at around the maximal speed of our ADSL, we don't suffer from a problem that Dr. John's concept could remedy.

I think the premise that this tech is based on 3G multicast is wrong too.

Dr Papandriopoulos paper suggests the algorithm works by iteratively lowering power, and therefore reducing crosstalk. The reduced crosstalk allows faster protocols like VDSL to be used on the copper that was previously only capable of ADSL2.

Both linked articles are a little scarce of details, but it's an interesting concept.

The slashdot summary and linked articles are rather short on details. A little googling located some details:

• Dr. John Papandriopoulos' home page.
• Links to his Publications and Research (*)
• The actual paper has not been released yet, but here is a precursor to it: Low-Complexity Distributed Algorithms for Spectrum Balancing in Multi-User DSL Networks (PDF)

NOTE: I did a quick skim of it and had not seen any empirical evidence of the advance; seems to be entirely theoretical. I don't mean to lessen his accomplishments, but my experience is that reality usually has unforeseen factors. I certainly hope he IS on to something here!!

(*) I didn't know anyone used the &ltblink> tag any more. :/

The slashdot summary and linked articles are rather short on details. A little googling located some details:

• Dr. John Papandriopoulos' home page.
• Links to his Publications and Research (*)
• The actual paper has not been released yet, but here is a precursor to it: Low-Complexity Distributed Algorithms for Spectrum Balancing in Multi-User DSL Networks (PDF)

NOTE: I did a quick skim of it and had not seen any empirical evidence of the advance; seems to be entirely theoretical. I don't mean to lessen his accomplishments, but my experience is that reality usually has unforeseen factors. I certainly hope he IS on to something here!!

(*) I didn't know anyone used the &ltblink> tag any more. :/

The slashdot summary and linked articles are rather short on details. A little googling located some details:

• Dr. John Papandriopoulos' home page.
• Links to his Publications and Research (*)
• The actual paper has not been released yet, but here is a precursor to it: Low-Complexity Distributed Algorithms for Spectrum Balancing in Multi-User DSL Networks (PDF)

NOTE: I did a quick skim of it and had not seen any empirical evidence of the advance; seems to be entirely theoretical. I don't mean to lessen his accomplishments, but my experience is that reality usually has unforeseen factors. I certainly hope he IS on to something here!!

(*) I didn't know anyone used the &ltblink> tag any more. :/

Had a few beers with him. Here is his homepage.