Abstract
We investigate an embedded multicast/broadcast approach for transport of digital video over spread-spectrum code-division multiple access (CDMA) cellular networks. Previous work has shown that the incorporation of a scalable source coding scheme with multiresolution modulation provides a promising design paradigm for the practical realization of the information-theoretic performance predictions originally developed by Cover [1], which demonstrated that optimal multicast/broadcast performance could be achieved by an embedded transmission scheme. Hence, the major technical challenge associated with the design of an end-to-end embedded multicast/broadcast system is how to match an embedded modulation constellation with a scalable source coding scheme. In this work, taking into consideration both the interference-limited and bandwidth-limited characteristics of a CDMA system, we provide a cross-layer approach incorporating adaptive power allocation and channel coding strategies and effectively match a discrete cosine transform based scalable motion-compensated video encoder to an embedded multiresolution modulation scheme to simultaneously deliver a basic quality-of-service (QoS) to less capable receivers while maximizing both the QoS for more capable receivers and the system capacity. We demonstrate the efficacy of this approach using the ITU-T H.263+ video scalable hybrid coder, although the approach is generally extensible to other scalable coding schemes as well.
Original language | English (US) |
---|---|
Pages (from-to) | 655-667 |
Number of pages | 13 |
Journal | IEEE Transactions on Multimedia |
Volume | 9 |
Issue number | 3 |
DOIs | |
State | Published - Apr 2007 |
Externally published | Yes |
Keywords
- Adaptive modulation and coding
- Code-division multiple access (CDMA)
- Cross-layer
- Drift control
- Embedded transmission
- H.263+
- Joint source coding-power control
- Joint source-channel coding
- Multicast/broadcast
- Turbo codes
- Wireless video
ASJC Scopus subject areas
- Computer Networks and Communications
- Information Systems
- Computer Graphics and Computer-Aided Design
- Software