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A standard rack-mount headend. Once a television signal is received, it must be processed. For digital satellite TV signals, a dedicated commercial satellite receiver is needed for each channel that is to be distributed by the cable system; these are usually rack-mountable receivers that are designed to take up less space than consumer receivers.
A QPSK Digital Satellite Headend by Fracarro. A SMATV headend is used to receive and rebroadcast satellite television channels throughout a property from a single satellite feed. [4] The system consists of a master antenna and a matching transformer to match the balanced antenna with unbalanced cable and amplifiers. [5]
In Remote PHY, equipment such as CMTSs or CCAPs are connected directly to the HFC network using fiber optics carrying digital signals, eliminating the RF interface and coaxial cables at the CMTS/CCAP and RF modulation at the headend, [83] and replacing analog signals in fiber optic cables in the network, with digital signals such as 10 Gigabit ...
cable television headend, the central facility serving a local area for cable television systems SMATV headend, Single Master Antenna Television, receives and rebroadcasts satellite TV throughout a property
The ATSC transmission method is not robust enough against Doppler shift and multipath radio interference in mobile environments, and is designed for highly directional fixed antennas. To overcome these issues, additional channel coding mechanisms are introduced in ATSC-M/H to protect the signal.
Some SMATV systems may carry 8-VSB and QAM signals, mostly in apartment buildings and similar facilities that use a combination of terrestrial antennas and cable distribution sources (such as HITS or "Headend in the Sky", a unit of Comcast that delivers digital channels by satellite to small cable systems).