An Achievable Rate Region for a Two-Relay Network with Receiver-Transmitter Feedback

TL;DR

This paper establishes an achievable rate region for a two-relay network with receiver-transmitter feedback, employing advanced coding and decoding strategies to improve communication efficiency.

Contribution

It introduces a novel combination of compress-and-forward, binning, and joint decoding techniques to enhance achievable rates in relay networks with feedback.

Findings

Achieves higher rates through joint decoding of relay information.

Combines deterministic and random binning for improved coding efficiency.

Demonstrates the effectiveness of feedback in relay network capacity.

Abstract

We consider a relay network with two relays and a feedback link from the receiver to the sender. To obtain the achievability result, we use compress-and-forward and random binning techniques combined with deterministic binning and restricted decoding. Moreover, we use joint decoding technique to decode the relays' compressed information to achieve a higher rate in the receiver.