Power efficient wireless video communications over CDMA networks

Xiaoan Lu, Yao Wang, Elza Erkip, David Goodman

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

Abstract

Effective resource management is essential to the success of cellular communications. It not only increases the system capacity but also prolongs the battery life. This paper focuses on designing power efficient wireless terminals that transmit video signals in the uplink of a code division multiple access (CDMA) cellular system. Since video compression consumes a significant amount of power, this research takes into account signal processing power as well as transmission power. We derive a novel fast two-step algorithm for practical encoders with complicated distortion-rate models. By separating the complex optimization problem into two steps, the fast algorithm reduces the computation burden significantly at the base station and obtains global minimum. Our simulation results show that significant power savings can be obtained. This algorithm can be applied to a variety of source coders and channel models.

Original languageEnglish (US)
Title of host publication25th PCS Proceedings
Subtitle of host publicationPicture Coding Symposium 2006, PCS2006
StatePublished - 2006
Event25th PCS: Picture Coding Symposium 2006, PCS2006 - Beijing, China
Duration: Apr 24 2006Apr 26 2006

Publication series

Name25th PCS Proceedings: Picture Coding Symposium 2006, PCS2006
Volume2006

Other

Other25th PCS: Picture Coding Symposium 2006, PCS2006
CountryChina
CityBeijing
Period4/24/064/26/06

Keywords

  • CDMA
  • Power control
  • Video coding
  • Video transmission

ASJC Scopus subject areas

  • Engineering(all)

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