Gigabit-over-copper VDSL successor G.fast signed off at last
The long-awaited G.fast physical layer standard has been signed off by the International Telecommunications Union (ITU), improving the chance that the world will see standards-compliant, interoperable kit start to ship in 2015.
The ITU almost manages to work up some excitement about the announcement, reminding a grateful world that the standard enables speeds of “up to” a gigabit per second.
Back in 2013, the ITU would only go so far as to commit the technology to deliver hundreds of megabits per second, but that was before kit, chips or field trials existed to let it turn the switch to “boost”.
The December 5 statement from the ITU covers the PHY (physical layer) specs. In April of 2014, an accompanying standard, G.9700, set down spectral power density rules for G.fast to ensure that rollouts don't ruin radio transmissions.
Zanimljiva vest - izgleda ce bakar docekati i gigabitni transport.
Sto je samo po sebi impresivno. Mislim da je 90-tih malo ko mislio da ce tehnologija dizajnirana za prenos ljudskog glasa do 4 kHz biti u stanju da prenese preko 16 hiljada puta vise podataka.
Siguran sam da bi ljudi u IT-u ili jaki konzumenti sadrzaja bili daleko srecniji potpunom zamenom bakra sa optikom, ali ekonomija diktira drugacije uslove igre. Za razliku od optike, bakar je sproveden do, prakticno, svake zgrade u urbanim sredinama i provajderi ce sigurno biti zadovoljni ako mogu da iskoriste vec postojecu fizicku infrastrukturu za jos jednu generaciju Internet usluga.
Doduse, G.Fast ce patiti od istih problema kao i VDSL2 sa jos vecim "cutoff-om" maksimalne udaljenosti od Telco-ove "kutije". Pretpostavljam da ce se u slucaju G.Fast-a raditi o nekoliko stotina metara max. Doduse, eventualne unapredjene tehnike kodiranja mozda unaprede malo kvalitet servisa za ljude "na granici".
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PowerMonkey - Redyce CPU Power Waste and gain performance! - https://github.com/psyq321/PowerMonkey