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Metasurface-Programmable Wireless Network-On-Chip.

Mohammadreza F Imani¹, Sergi Abadal², Philipp Del Hougne³

¹School of Electrical, Computer, and Energy Engineering, Arizona State University, Tempe, AZ, 85287, USA.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|June 24, 2022

Summary

This summary is machine-generated.

Smart radio environments are now on the chip scale. Programmable metasurfaces shape wireless on-chip communication channels, overcoming signal weakness and enabling faster modulation speeds for networks-on-chips (WNoCs).

Keywords:

over-the-air equalization programmable metasurface smart radio environment wave chaos wireless communication wireless network-on-chip

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Area of Science:

Electrical Engineering
Computer Engineering
Materials Science

Background:

Wireless networks-on-chips (WNoCs) offer potential for improved inter-core communication but face signal strength and reverberation challenges.
Existing WNoC designs struggle with a trade-off between signal reception and modulation speed due to multipath propagation.
Smart radio environments, utilizing metasurfaces, are explored for wireless communication but require adaptation for on-chip scales.

Purpose of the Study:

To introduce and validate an on-chip reconfigurable intelligent surface (RIS) for programmable wireless on-chip environments.
To overcome the limitations of weak signals and severe reverberation in WNoCs.
To enable higher modulation speeds in WNoCs by shaping the channel impulse response (CIR).

Main Methods:

Design and characterization of a novel programmable metasurface for on-chip integration.
Optimization of the metasurface configuration to equalize wireless on-chip channels.
Rigorous communication analysis to evaluate the performance of shaped CIRs.

Main Results:

A functional on-chip reconfigurable intelligent surface was developed and tested.
The metasurface successfully shaped the channel impulse response (CIR), imposing a pulse-like shape.
Demonstrated feasibility of significantly higher modulation speeds without reduced signal strength despite multipath propagation.

Conclusions:

The proposed on-chip RIS enables a programmable smart radio environment for WNoCs.
This approach overcomes the fundamental dilemma in WNoC design, enhancing signal quality and speed.
The programmability paradigm significantly boosts the competitiveness of WNoCs as on-chip interconnect solutions.