DTV repeater emission mask analysis

Terrestrial digital television (DTV) requires careful planning in the allocation of RF channels, especially during the transition period when intermixing both analog and digital signals in the same coverage area. One important issue to consider is adjacent channel interference, which limits the numb...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on broadcasting 2003-03, Vol.49 (1), p.32-80
Main Author: Sgrignoli, G.
Format: Article
Language:English
Subjects:
Applied sciences
Band pass filters
Bandpass filters
Broadcasting. Videocommunications. Audiovisual
Channels
Computational modeling
Computer simulation
Digital broadcasting
Digital TV
Emission analysis
Exact sciences and technology
FCC
Interference
Masks
Radio frequency
Repeaters
Signal analysis
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Television
Television broadcasting
Television stations
Transmission and modulation (techniques and equipments)
Transmitters
Transversal filters
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Terrestrial digital television (DTV) requires careful planning in the allocation of RF channels, especially during the transition period when intermixing both analog and digital signals in the same coverage area. One important issue to consider is adjacent channel interference, which limits the number of RF channels utilized in any given area. This issue is important in the deployment of not only full service stations, but also of secondary stations such as translators, on-channel repeaters, and low power television stations. Full service stations have FCC rules that limit the amount of adjacent channel splatter by requiring the splatter energy to remain below a rigid emission mask. Currently there are no FCC rules for translators and low power television stations. The paper discusses typical DTV transmitter splatter sidebands and their causes, as well as specific methods for interference analysis from adjacent channel DTV splatter into adjacent NTSC or DTV signals. Two rigid emission masks ("simple" and "stringent") are proposed and evaluated. Several filter designs are computer simulated and analyzed for minimizing adjacent channel splatter interference as well as in-band DTV signal degradation. Linear pre-correction techniques are analyzed for various length (15-tap and 31-tap) transversal filter equalizers. The simulation is verified by measuring and evaluating DTV system performance for two hardware band-pass filters individually placed at the output of a low power (30 W average) transmitter.
ISSN:0018-9316
1557-9611
DOI:10.1109/TBC.2003.809290