Jin Chen

Publications (3)3.41 Total impact

• Source

  Available from: psu.edu

  Article: PASA: power adaptation for starvation avoidance to deliver wireless multimedia

  Jiancong Chen, S.-H.G. Chan, Qian Zhang, Wen-Wu Zhu, Jin Chen
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  ABSTRACT: In recent years, there has been an increasing interest to deliver multimedia services over wireless ad hoc networks. Due to the existence of hidden terminal and absence of central control, the medium access control protocol as used in the ad hoc networks may lead to channel capture, where some flows monopolize the channel while others suffer from starvation. As a consequence, the system throughput and fairness are greatly degraded. After showing that static power control leads to channel capture, we propose and study a distributed dynamic power control scheme termed "power adaptation for starvation avoidance" (PASA), which dynamically adjusts the transmission power of a node so as to avoid starvation. PASA is shown to be effective in breaking channel captures, hence improving short-term fairness among contending flows. It is simple, fully autonomous and requires no communication overhead. Via extensive simulations, we show that our power control algorithm achieves much better fairness without compromising system throughput through better spatial reuse. Our experiments with video sequences transmitting over different network topologies show that PASA achieves much better video quality with lower start-up delay and buffer requirement.
  IEEE Journal on Selected Areas in Communications 01/2004; · 3.41 Impact Factor
• Source

  Available from: ust.hk

  Conference Proceeding: A distributed power adaptation algorithm for multimedia delivery over ad hoc networks

  Jiancong Chen, S.-H.G. Chan, Qian Zhang, Wen-Wu Zhu, Jin Chen
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  ABSTRACT: There has been an increasing interest in recent years to deliver multimedia services over wireless ad hoc networks. Due to the existence of hidden terminal and absence of central control, the MAC protocol as used in the ad hoc networks may lead to channel capture, where some flows monopolize the channel while others suffer from starvation. This greatly degrades system throughput and fairness. After showing that static power control leads to channel capture, we propose and study a distributed dynamic power control scheme to break the capture. Our power control algorithm offers much higher fairness without compromising system throughput by better spatial reuse.
  Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on; 08/2003
• Article: PASA: power adaptation for starvation avoidance to deliver wireless multimedia.

  Jiancong Chen, Shueng-Han Gary Chan, Qian Zhang, Wenwu Zhu, Jin Chen
  IEEE Journal on Selected Areas in Communications. 01/2003; 21:1663-1673.