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Toward Dynamically Adapting Wireless Intra-Chip Channels to Traffic Needs with a Programmable Metasurface

Abstract : We introduce the idea of endowing on-chip wireless propagation environments with in-situ programmability by equipping the chip package with a programmable metasurface. The limitations of current wired chip interconnect fabrics present a serious performance bottleneck for multi-core chips. Wireless links between far-apart cores are a promising complementary link technique but struggle with the complex on-chip propagation environment presenting strong multipath effects. We expect that these challenges can be addressed with the ability to shape wireless channels between far-apart cores and to dynamically adapt them to traffic needs; for instance, by tailoring the impulse response between two wireless nodes, it may be feasible to prevent inter-symbol interference. Here, we present our recent progress toward this goal, including an analysis of the on-chip propagation environment, an efficient design of programmable meta-atoms suitable for the on-chip environment and operating in the 60 GHz regime, and a detailed discussion of different single-channel and multi-channel use-case scenarios. © 2020 ACM.
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Contributor : Laurent Jonchère <>
Submitted on : Wednesday, February 3, 2021 - 2:10:30 PM
Last modification on : Saturday, June 5, 2021 - 3:36:29 AM

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M.F. Imani, S. Abadal, P. del Hougne. Toward Dynamically Adapting Wireless Intra-Chip Channels to Traffic Needs with a Programmable Metasurface. 1st ACM International Workshop on Nanoscale Computing, Communication, and Applications, NanoCoCoA 2020, held in conjunction with the 18th ACM Conference on Embedded Networked Sensor Systems, SenSys 2020, Nov 2020, Yokohama, Japan. pp.20--25, ⟨10.1145/3416006.3431274⟩. ⟨hal-03130220⟩



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