Article Dans Une Revue Advanced Science Année : 2022

Metasurface‐Programmable Wireless Network‐On‐Chip (Adv. Sci. 26/2022)

Résumé

This paper introduces the concept of smart radio environments, currently intensely studied for wireless communication in metasurface-programmable meter-scaled environments (e.g., inside rooms), on the chip scale. Wireless networks-on-chips (WNoCs) are a candidate technology to improve inter-core communication on chips but current proposals are plagued by a dilemma: either the received signal is weak, or it is significantly reverberated such that the on-off-keying modulation speed must be throttled. Here, this vexing problem is overcome by endowing the wireless on-chip environment with in situ programmability which enables the shaping of the channel impulse response (CIR); thereby, a pulse-like CIR shape can be imposed despite strong multipath propagation and without entailing a reduced received signal strength. First, a programmable metasurface suitable for integration in the on-chip environment ("on-chip reconfigurable intelligent surface") is designed and characterized. Second, its configuration is optimized to equalize selected wireless on-chip channels "over the air." Third, by conducting a rigorous communication analysis, the feasibility of significantly higher modulation speeds with shaped CIRs is evidenced. The results introduce a programmability paradigm to WNoCs which boosts their competitiveness as complementary on-chip interconnect solution.

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hal-03799886 , version 1 (06-10-2022)

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Mohammadreza F. Imani, Sergi Abadal, Philipp del Hougne. Metasurface‐Programmable Wireless Network‐On‐Chip (Adv. Sci. 26/2022). Advanced Science, 2022, 9 (26), pp.2270167. ⟨10.1002/advs.202270167⟩. ⟨hal-03799886⟩
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