A framework of cross-layer design for multiple video streams in wireless mesh networks

Peng Cheng, Zhaoyang Zhang, Hsiao Hwa Chen, Peiliang Qiu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In this paper, a novel cross-layer design framework for multiple realtime video traffics in CDMA wireless mesh networks is proposed. First, the performances of application, physical, MAC, and network layers are modeled by some classical models under reasonable assumptions. Then, we present a framework in which source coding, power control, ARQ control, and delay partitioning functionalities at different layers can be jointly optimized. Our objective is to maximize the video quality under strict end-to-end delay constraints through adjusting source coding rate, end-to-end delay distribution, and each node's transmit power. This optimization problem is proved to be a nonlinear but log-convex one. Finally, we propose a centralized solution based on the classical convex programming method, as well as a partially distributed solution based on the Lagrangian dual decomposition technique. The both solutions are proved to converge to the global optimum of the above problem.

Original languageEnglish
Pages (from-to)1529-1539
Number of pages11
JournalComputer Communications
Issue number8
Publication statusPublished - 2008 May 25

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications


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