Achievable Rates for a Two-Relay Network with Relays-Transmitter Feedbacks

TL;DR

This paper investigates the achievable communication rates in a two-relay network with feedback links, employing advanced strategies like compress-and-forward and decode-and-forward to enhance cooperation and transmission efficiency.

Contribution

It introduces a novel combination of random and deterministic binning techniques with feedback to improve relay network communication strategies.

Findings

Feedback links enable better cooperation between sender and relays.

Superimposing facility and cooperation improves achievable rates.

Use of deterministic binning enhances restricted decoding performance.

Abstract

We consider a relay network with two relays and two feedback links from the relays to the sender. To obtain the achievability results, we use the compress-and-forward and the decode-and-forward strategies to superimpose facility and cooperation analogue to what proposed by Cover and El Gamal for a relay channel. In addition to random binning, we use deterministic binning to perform restricted decoding. We show how to use the feedback links for cooperation between the sender and the relays to transmit the information which is compressed in the sender and the relays.