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Massive MIMO Channel-aware Decision Fusion Aided by Reconfigurable Intelligent Surfaces

Domenico Ciuonzo, Alessio Zappone, Marco Di Renzo, Linlong Wu

Abstract

This paper investigates channel-aware decision fusion empowered by massive MIMO systems and reconfigurable intelligent surfaces (RIS). By integrating both, we aim to improve goal-oriented (fusion) performance despite the unique propagation challenges introduced. Specifically, we investigate traditional favorable propagation properties in the context of RIS-aided Massive MIMO decision fusion. The above analysis is then leveraged (i) to design three sub-optimal simple fusion rules suited for the large-array regime and (ii) to devise an optimization criterion for RIS reflection coefficients based on long-term channel statistics. Simulation results confirm the appeal of the presented design.

Massive MIMO Channel-aware Decision Fusion Aided by Reconfigurable Intelligent Surfaces

Abstract

This paper investigates channel-aware decision fusion empowered by massive MIMO systems and reconfigurable intelligent surfaces (RIS). By integrating both, we aim to improve goal-oriented (fusion) performance despite the unique propagation challenges introduced. Specifically, we investigate traditional favorable propagation properties in the context of RIS-aided Massive MIMO decision fusion. The above analysis is then leveraged (i) to design three sub-optimal simple fusion rules suited for the large-array regime and (ii) to devise an optimization criterion for RIS reflection coefficients based on long-term channel statistics. Simulation results confirm the appeal of the presented design.
Paper Structure (6 sections, 20 equations, 2 figures, 1 table)

This paper contains 6 sections, 20 equations, 2 figures, 1 table.

Table of Contents

  1. Introduction
  2. System Model
  3. Fusion Rule Design for Large-Array FC
  4. RIS design via long-term channel statistics
  5. Simulation Results
  6. Conclusions and Future Directions

Figures (2)

  • Figure 1: $P_{D_{0}}$ vs $N$ of the considered rule/RIS configurations. Setup: FC false-alarm rate is set to $P_{F_{0}}=0.01$; RIS with $M=25$ elements.
  • Figure 2: $P_{D_{0}}$ vs WSN-FC Rician factor [dB] for the considered rule/RIS configurations. Setup: FC false-alarm rate is set to $P_{F_{0}}=0.01$; RIS with $M=25$ elements and $N=128$ antennas at the FC.