Research Article
Simulation Study of the Spectral Capacity Requirements Switched Digital Broadcast
@INPROCEEDINGS{10.1109/BROADNETS.2007.4550462, author={Jiong Gong and Daniel A. Vivanco and Jim Martin}, title={Simulation Study of the Spectral Capacity Requirements Switched Digital Broadcast}, proceedings={4th International IEEE Conference on Broadband Communications, Networks, Systems}, publisher={IEEE}, proceedings_a={BROADNETS}, year={2010}, month={5}, keywords={Multimedia Applications VoD High Definition Audio/Video Networking Video Switched Broadcast Capacity Planning Traffic Modeling \& Characteristics.}, doi={10.1109/BROADNETS.2007.4550462} }- Jiong Gong
Daniel A. Vivanco
Jim Martin
Year: 2010
Simulation Study of the Spectral Capacity Requirements Switched Digital Broadcast
BROADNETS
IEEE
DOI: 10.1109/BROADNETS.2007.4550462
Abstract
Switched Digital Broadcast (SDB) is a new method of distributing video programming. Compared with traditional broadcast methods, it reduces spectrum requirements by taking advantage of the fact that not all program channels are being viewed by subscribers at the same time. The actual spectrum savings depends on human TV watching behavior, the popularity of delivered TV programs, streaming bit-rate composition and subscriber group size. We have developed a simulation model of an SDB system that allows us to explore the impact of these factors, in particular subscriber’s channel flipping behavior, on the capacity requirement. Our subscriber viewing model ranges from intense, correlated channel flipping behavior to minimal flipping behavior representing DVR usage. Our results suggest that frequent channel flipping has little effect on the spectrum requirements under normal viewing assumptions.