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arXiv · 2601.08592

On the Optimality of Decode and Forward for Some Cooperative Broadcast Channels

Nicolas Le Gouic·Yossef Steinberg·Michèle Wigger
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Abstract

This article characterizes new boundary points on the capacity region of certain classes of more capable broadcast channels (BC) with uni-directional cooperation from the stronger to the weaker receiver. The new boundary points are achieved by a simple coding scheme that employs superposition coding at the transmitter with decode and forward at the stronger receiver. We evaluate our general result for Gaussian BCs and for a BC consisting of a binary erasure channel (BEC) to the stronger receiver and a binary symmetric channel (BSC) to the weaker receiver.

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Nicolas Le Gouic, Yossef Steinberg, Michèle Wigger. 2026-01-13. On the Optimality of Decode and Forward for Some Cooperative Broadcast Channels. https://arxiv.org/abs/2601.08592

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