Record speedof data transmission, of the order of 10 Gbps, through "traditional" copper telephone lines and a prototype technology announced that Bell Labs - the research "arm" of Alcatel-Lucent.
According to the announcement, this innovative technology demonstrates how it is possible to use existing copper networks to provide "symmetric" ultra-broadband 1Gbps services.
"Achieving XNUMX Gbps symmetric services - where bandwidth can be distributed to provide simultaneous upload and download speeds of the order of XNUMX Gbps - is a major achievement for copper broadband. It will enable administrators to provide Internet connection speeds that are no different from services fiber-to-the-home, which is a significant business advantage in areas where it is not physically, economically or aesthetically viable to lay new fiber optic cables directly to homes. Instead, fiber can be run through the street, wall or basement of a building and the existing copper network used for the last few meters,” according to Alcatel-Lucent.
In the context of the tests, a prototype technology called XG-FAST was used, which is an extension of the G.fast technology - a new broadband standard determined by the ITU (International Telecommunications Union). When it becomes commercially available in 2015, G.fast will use a range frequencyς για μετάδοση δεδομένων στα 106 MHz, παρέχοντας ταχύτητες broadband μέχρι 500 Mbps σε ακτίνα 100 μέτρων. Εν αντιθέσει, το XG-FAST χρησιμοποιεί ένα αυξημένο εύρος συχνότητας μέχρι και 500 MHz για να επιτυγχάνει υψηλότερες ταχύτητες σε μικρότερες αποστάσεις. Τα Bell Labs πέτυχαν «συμμετρική» υπηρεσία ενός Gbps σε απόσταση 70 μέτρων σε ένα μεμονωμένο χάλκινο ζεύγος. Τα 10 επιτεύχθηκαν σε απόσταση 30 μέτρων μέσω της χρήσης δύο ζευγών (technique known as bonding).
According to Marcus Weldon, president of Bell Labs, "our constant goal is to push the boundaries of what is possible to 'invent the future', with achievements that are 10 times better than what is possible today. Demonstration of 10Gbps over copper is a prime example: pushing broadband technology to its limits, administrators can determine how they could provide gigabit-class services to existing networks, ensuring ultra-broadband access as widely and cost-effectively as possible ».
Source: naftemporiki.gr
