Chee Onn Chow

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The past few years have witnessed increased interest among researchers in cluster-based protocols for homogeneous networks because of their better scalability and higher energy efficiency than other routing protocols. Given the limited capabilities of sensor nodes in terms of energy resources, processing and communication range, the cluster-based protocols(More)
Supporting video applications over infrastructureless mobile ad hoc networks is more challenging than over any other networks due to the absence of fixed infrastructure and rapid changes in network topology. In this paper, we tackle this problem by adopting the concept of multipoint-to-point (M2P) video transmission together with Multiple Description Coding(More)
Existing communication infrastructures may be unavailable in the aftermath of a disaster. Under these circumstances, it is difficult to share information, such as text, image, and audio data, in the areas where the communication infrastructure is unavailable. Since these contents are usually composed of multiple packets, existing communication methods(More)
This paper presents a two-level scheduling scheme for video transmission over downlink orthogonal frequency-division multiple access (OFDMA) networks. It aims to maximize the aggregate quality of the video users subject to the playback delay and resource constraints, by exploiting the multiuser diversity and the video characteristics. The upper level(More)