Performance variation adaptive differential signaling via Carbon Nanotube bundles

Abstract

Carbon Nanotube (CNT) interconnects provide one of the most promising on-chip interconnect techniques for future VLSI systems, although significant process and runtime variabilities remain challenging for CNT interconnects. In this paper, we propose a performance variation adaptive differential signaling scheme, particularly for carbon nanotube bundle on-chip interconnects. Estimation based on published data demonstrate 37% signal propagation performance variation reduction achieved by the proposed scheme implemented in CNT bundles compared with CNT interconnects with the conventional signaling scheme.