Multimedia processing and transport for the wireless personal terminal scenario

D. Raychaudhuri, Daniel J. Reininger, M. Ott, G. Welling

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


This paper presents an exploratory view of multimedia processing and transport issues for the wireless personal terminal scenario. In this scenario, portable multimedia computing devices are used to access video/voice/data information and communication services over a broadband wireless network infrastructure. System architecture considerations are discussed, leading to identification of a specific approach based on a unified wired + wireless ATM network, a general-purpose CPU based portable terminal, and a new software architecture foe efficient media handling and quality-of-service (QoS) support. The recently proposed 'wireless ATM' network concept is outlined, and the associated transport interface at the terminal is characterized in terms of available service types (ABR, VBR, CBR) and QoS. A specific MPEG video delivery applications with VBR ATM transport and software decoding is then examined in further detail. Recognizing that software video decoding at the personal terminal represents a major performance bottleneck in this system, the concept of MPEG encoder quantizer control with joint VBR bit-rate and decoder computation constraints is introduced. Experimental results are given for software decoding of VBR MPEG video with both VBR usage parameter control (UPC) and decoder CPU constraints at the encoder, demonstrating improvements in delivered video quality relative to the conventional case without such controls.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Number of pages12
ISBN (Print)0819418587
StatePublished - 1995
Externally publishedYes
EventVisual Communications and Image Processing '95 - Taipei, Taiwan
Duration: May 24 1995May 26 1995

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherVisual Communications and Image Processing '95
CityTaipei, Taiwan

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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