Networking System

The new ArcLight networking system enables users to combine traditional VSAT applications and interactive broadband IP data into a single network, dramatically expanding the number of applications where VSATs are economical. The subscriber terminal costs less than today's typical TDM/TDMA terminal and each remote terminal in the network shares data downloads at speeds up to 45 Mbps and transmits data at up to 512 kbps.

The system features two to three times the bandwidth efficiency of a traditional TDMA VSAT. The technology behind the new network is Paired Carrier Multiple Access (PCMA), a patented signal processing technique that enables both send and receive signals to occupy the same satellite frequency. Using PCMA technology, the system "piggybacks" multiple subscriber return channels on top of a high speed DVB forward channel to maximize bandwidth efficiency.

The improvement in bandwidth efficiency is essential for broadband services because these services can consume vastly more transponder space than traditional VSAT applications. As a result, the system can support virtual circuits for enterprise wide area networks at a price comparable to terrestrial frame relay service.

The system includes a hub and comprehensive network management system.

ViaSat Inc., 4356 Communications Drive, Norcross, GA 30093. Tel: 770-903-6611; Fax: 770-903-6245.