Multi-layer Head End Combining Network Design For Broadcast, Local, And Targeted Services (1997)

By Oleh J. Sniezko, TCI Communications, Inc.

In modern hybrid fiber-coaxial (HFC) networks, the target subscriber groups for various signals originating from headends and hubs are . different. Some of the signals are of broadcast type destined to all customers, the others target a limited number of customers. These differences must be reflected in the design of the headend/hub combining/splitting networks to take advantage of spectrum re-usability. This paper describes headend and hub combining/splitting networks designed to meet the new requirements of narrowcast and targeted services. It also presents a combining/splitting network for reverse signals that require a distinctly different approach from the forward signals.

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