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Delay-constrained video applications have stringent bandwidth, delay and loss requirements, which is a great challenge to support such real-time applications in wireless ad hoc networks. In this paper, to minimize the distortion of video received at the decoder, we propose a cross layer design (CLD) approach which combines the network layer and MAC layer to meet the stringent requirements by dynamically...
With the growing popularity of video communications in wireless ad hoc network, cross-layer design (CLD) provides a novel technique that can dynamically accommodate its policy to time-varying channel condition and guarantee different Quality of Service (QOS) in real-time video transmission. In this paper, to minimize the distortion of real-time video transmission, we propose a cross-layer optimized...
This paper provides a novel routing algorithm CLQR (Cumulative Link Quality Routing Algorithm) which leverages LQI to provide a better routing scheme. Unlike other schemes providing maximum link quality, CLQR does not use probe packets to measure the link quality. Instead it uses cumulative link quality as a metric to choose better routing path. Result of simulation shows that it can hold a high throughput...
Due to the complexity and time-variation of wireless channel, it is a great challenge to measure and estimate the channel quality accurately in wireless ad hoc network. To address this problem, we propose a link quality estimator which use the packet loss rate (PLR), round trip time (RTT), available bandwidth (ABW) at the sender and the feedback information from receiver to continuously tracks the...
Video transmission over wireless ad hoc networks is very sensitive to temporal dynamics of the wireless channel. In order to achieve good end to end performance, it is necessary for upper layers to quickly adapt to the variations of the wireless links. Based on this motivation, we propose a novel cross layer design (CLD) which employs an adaptive link estimator to ensure reliable transmissions. The...
Based on the analysis of accomplishments and trends of modern technologies (such as the computer, wireless communication, creature science, nanotechnology, medical science, et al.), this paper makes a prediction of the future network, and proposes a new concept - the human body network (HBN), which is formed by people around the world whom are equipped with special micro chip in their body. The HBN...
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