Streaming Erasure Codes over Multi-Access Relayed Networks
Gustavo Kasper Facenda, Elad Domanovitz, Ashish Khisti, Wai-Tian Tan,, John Apostolopoulos

TL;DR
This paper develops and analyzes streaming erasure codes for a multi-access relayed network with two sources, a relay, and a destination, optimizing data transmission under strict delay constraints.
Contribution
The paper introduces a novel framework for streaming codes in multi-access relayed networks, including two schemes that improve achievable rate regions and establish optimality conditions.
Findings
Achievable rate region derived with a closed-form expression.
Proposed schemes outperform baseline single-user codes.
Conditions identified when the first scheme is optimal.
Abstract
Many emerging multimedia streaming applications involve multiple users communicating under strict latency constraints. In this paper we study streaming codes for a network involving two source nodes, one relay node and a destination node. In our setting, each source node transmits a stream of messages, through the relay, to a destination, who is required to decode the messages under a strict delay constraint. For the case of a single source node, a class of streaming codes has been proposed by Fong et al. [2], using the concept of {\em delay-spectrum}. In the present work we present an in-depth analysis of the properties of delay-spectrum and apply them to develop streaming codes for our proposed setting through a novel framework. Our first scheme involves greedily selecting the rate on the link from relay to destination and using properties of the delay-spectrum to find feasible…
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Taxonomy
TopicsCooperative Communication and Network Coding · Advanced Wireless Network Optimization · Caching and Content Delivery
