Toward Dynamically Adapting Wireless Intra-Chip Channels to Traffic Needs with a Programmable Metasurface
Résumé
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 farapart 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. CCS CONCEPTS • Hardware → Network on chip; Emerging technologies.
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