Trade-offs in bit-rate allocation for wireless video streaming
2006 (English)In: ACM MSWiM 2005: Proceedings of the Eighth ACM Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems, 2006, Vol. 2006, 349-353 p.Conference paper (Refereed)
One of the central problems in video transmission over lossy channels is the choice of source and channel coding rates to allocate the available transmission rate optimally. In this paper, we present a structural distortion model for video streaming over time-varying fading channels. Based on this model we study the average video distortion for various bit-rate allocation strategies and channel conditions. We argue that sensitivity to channel variations should be one of the selection criteria when choosing an optimal bit-rate allocation. We demonstrate that a simple bitrate allocation strategy, which aims to minimize current distortion, is not necessarily optimal in terms of time-average distortion. System robustness is crucial for the streaming performance when frequent allocation updates are not feasible. It is achieved at the expense of higher source distortion in the encoder.
Place, publisher, year, edition, pages
2006. Vol. 2006, 349-353 p.
Bit-rate allocation, Perceptual distortion, Video streaming, Carrier communication, Channel capacity, Image coding, Mobile computing, Rayleigh fading, Robustness (control systems), Time varying systems, Video signal processing, Bit error rate
IdentifiersURN: urn:nbn:se:kth:diva-26612ScopusID: 2-s2.0-33748967928ISBN: 1-59593-188-0OAI: oai:DiVA.org:kth-26612DiVA: diva2:372621
QC 201011262010-11-262010-11-262013-09-09Bibliographically approved