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arXiv · 2105.00332

Two-terminal Erasure Source-Broadcast with Feedback

Louis Tan·Kaveh Mahdaviani·Ashish Khisti
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Abstract

We study the effects of introducing a feedback channel in the two-receiver erasure source-broadcast problem in which a binary equiprobable source is to be sent over an erasure broadcast channel to two receivers subject to erasure distortion constraints. The receivers each require a certain fraction of a source sequence, and we are interested in the minimum latency, or transmission time, required to serve them all. We first show that for a two-user broadcast channel, a point-to-point outer bound can always be achieved. We further show that the point-to-point outer bound can also be achieved if only one of the users, the stronger user, has a feedback channel. Our coding scheme relies on a hybrid approach that combines transmitting both random linear combinations of source symbols as well as a retransmission strategy.

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Louis Tan, Kaveh Mahdaviani, Ashish Khisti. 2021-05-01. Two-terminal Erasure Source-Broadcast with Feedback. https://arxiv.org/abs/2105.00332

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