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We examine the performance of multiple description coding (MDC) with and without the use of automatic repeat request (ARQ) protocols for packet network communication, in comparison with layered coding (LC). The rate-distortion lower bound of MDC and LC are incorporated into an E-model based performance measure, which accounts for the additional costs of excess rates and delay incurred from usin...

Recent works have proposed the combination of Multiple Description Coding (MDC) schemes with the novel Distributed Video Coding (DVC) paradigm in order to enable robust video transmission over lossy channels. The paper presents a Multiple Description Distributed Video Coder (MDDVC) that combines a polyphase-subsampling MDC approach with a novel hybrid Distributed Source Coding technique that pr...

We consider a simple communication network model and focus on a single source-destination pair to exploit the interconnection between Source Coding and Parallel Routing. We consider a Distortion Measure that combines signal reconstruction fldelity with network delay and we pose the problem of minimizing this Measure by jointly choosing the Encoder Parameters and the Routing Parameters. We look ...

Video compression enables a number of applications by reducing the required bit rate needed to represent a video sequence, however the compressed video is much more susceptible to errors such as bit errors or packet loss. Conventional video compression standards employ an architecture which we refer to as single-state systems since they have a prediction loop with a single state (e.g. the previ...

This paper presents a way of using a linear regression model to produce a single-valued criterion that indicates the perceived importance of each block in a stream of speech blocks. This method is superior to the conventional approach, voice activity detection (VAD), in that it provides a dynamically changing priority value for speech segments with finer granularity. The approach can be used in...