Analysis of a Cooperative Strategy for a Large Decentralized Wireless Network
Andr\'es Altieri, Leonardo Rey Vega, Pablo Piantanida, Cecilia Galarza

TL;DR
This paper analyzes a relay activation strategy in large decentralized wireless networks, balancing cooperation benefits and interference, and finds optimal activation schemes that significantly improve communication reliability.
Contribution
It proposes a novel relay activation strategy optimized for outage probability in large wireless networks modeled as Poisson point processes.
Findings
Optimal relay activation depends on network parameters.
Activating all relays or none is optimal in high reliability regimes.
The scheme significantly improves network performance over direct transmission only.
Abstract
This paper investigates the benefits of cooperation and proposes a relay activation strategy for a large wireless network with multiple transmitters. In this framework, some nodes cooperate with a nearby node that acts as a relay, using the decode-and-forward protocol, and others use direct transmission. The network is modeled as an independently marked Poisson point process and the source nodes may choose their relays from the set of inactive nodes. Although cooperation can potentially lead to significant improvements in the performance of a communication pair, relaying causes additional interference in the network, increasing the average noise that other nodes see. We investigate how source nodes should balance cooperation vs. interference to obtain reliable transmissions, and for this purpose we study and optimize a relay activation strategy with respect to the outage probability.…
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