Outage Probability of Wireless Ad Hoc Networks with Cooperative Relaying

TL;DR

This paper evaluates the outage probability in wireless ad hoc networks with cooperative relaying, considering random node placement and interference, and compares different combining schemes for improved reliability.

Contribution

It provides closed-form expressions for outage probability considering various combining schemes in randomly deployed ad hoc networks.

Findings

Optimal combining yields the lowest outage probability.

Maximum ratio combining outperforms selection combining.

Analytical expressions enable performance comparison under interference.

Abstract

In this paper, we analyze the performance of cooperative transmissions in wireless ad hoc networks with random node locations. According to a contention probability for message transmission, each source node can either transmits its own message signal or acts as a potential relay for others. Hence, each destination node can potentially receive two copies of the message signal, one from the direct link and the other from the relay link. Taking the random node locations and interference into account, we derive closed-form expressions for the outage probability with different combining schemes at the destination nodes. In particular, the outage performance of optimal combining, maximum ratio combining, and selection combining strategies are studied and quantified.