ABD e-News August 26, 2005

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Distortion control for delay-sensitive sources

We investigate the problem of finding minimum-distortion policies for streaming delay-sensitive but distortion-tolerant data. We consider cross-layer approaches which exploit the coupling between presentation and transport layers. We make the natural assumption that the distortion function is convex and decreasing. We focus on a single source-destination pair and analytically find the optimum transmission policy when the transmission is done over an error-free channel. This optimum policy turns out to be independent of the exact form of the convex and decreasing distortion function. Then, for a packet-erasure channel, we analytically find the optimum open-loop transmission policy, which is also independent of the form of the convex distortion function. We then find computationally efficient closed-loop heuristic policies and show, through numerical evaluation, that they outperform the open-loop policy and have near optimal performance.

ABD e-News September 2, 2005

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ABD e-News March 25, 2005

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ABD e-News July 15, 2005

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ABD e-News August 19, 2005

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ABD e-News September 16, 2005

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ABD e-News September 9, 2005

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ABD e-News September 23, 2005

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ABD e-News October 7, 2005

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ABD e-News September 30, 2005

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News, I-74 Iowa-Illinois Corridor Study, Issue 4, Winter 2005

Newsletter updating the corridor study of the Mississippi Bridge project for the states of Iowa and Illinois.

News, I-74 Iowa-Illinois Corridor Study, Issue 1 Spring 2001

Newsletter updating the corridor study of the Mississippi Bridge project for the states of Iowa and Illinois.

News, I-74 Iowa-Illinois Corridor Study, Issue 2, Winter 2002

Newsletter updating the corridor study of the Mississippi Bridge project for the states of Iowa and Illinois.

News, I-74 Iowa-Illinois Corridor Study, Issue 3, Fall 2003

Newsletter updating the corridor study of the Mississippi Bridge project for the states of Iowa and Illinois.