Performance analysis of a RIS-assisted communications

TL;DR

This work proposes an analytical model to analyze RIS performance that relies on a simple street model where obstacles and mobile units are all aligned and RIS is positioned onto a building parallel to the road.

Abstract

Reconfigurable Intelligent Surfaces (RIS) are currently considered for adoption in future 6G stantards. ETSI and 3GPP have started feasibility and performance investigations of such a technology. This work proposes an analytical model to analyze RIS performance. It relies on a simple street model where obstacles and mobile units are all aligned. RIS is positioned onto a building parallel to the road. The coverage probability in presence of obstacles and concurrent communications is then computed as a performance criteria.

Figures (6)

• Figure 1: In a RIS-assisted system, radio signals can bypass obstructions.
• Figure 2: Notations
• Figure 3: Covered domain between $i^{th}$ and $(i+1)^{th}$ obstacles - Scenario 1
• Figure 4: Covered domain between $i^{th}$ and $(i+1)^{th}$ obstacles - Scenario 3
• Figure 5: ${\mathbf E}\left[L\right]$ as a function of $\gamma_2/\gamma_1$.

Theorems & Definitions (11)

• definition 1
• theorem 1
• lemma 1: Scenario 1
• proof : Proof of Lemma \ref{['lem:scenario_1']}
• lemma 2: Scenario 2
• lemma 3: Scenario 3
• definition 2
• theorem 2
• corollary 1
• theorem 3