Scientific Atlanta's RF-based BroadLAN Delivers 40 Mbps Bi-directionally

Scientific-Atlanta introduced a new family of RF- based BroadLAN products that enable cable operators to dedicate a particular broadband frequency for each business customer, ensuring the greater availability for business and voice services over existing HFC (hybrid fiber-coax) networks without plant upgrades. Scientific-Atlanta's BroadLAN technology is based on frequency division multiplexing (FDM) and is capable of delivering 40 Mbps service in both the upstream and downstream directions. It uses timing techniques to ensure that TDM services remain synchronized with existing phone networks. The company also said its BroadLAN technology's use of dedicated narrowband carriers in the reverse path provides the ability to turn off known jammers as well as the ability to adjust the amplitude and modulation of each individual carrier. This enables cable operators to use portions of the broadband spectrum often unusable by other technologies. The BroadLAN product line will consist of a Cable Hub Termination device that provides the connectivity between the metro backbone and the HFC system. A BroadLAN Customer Modem will reside in the telecommunications cabinet at the customer site. Carrier trials are planned for this summer and commercial launch is expected later this year.
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