Generalized Differential Vector Signaling

Binary NRZ signaling over single ended or fully differential parallel wired channels is commonly used for chip-to-chip communications. This paper presents differential vector signaling as a generalized new class of signaling for parallel wired links. Differential vector signaling has many of the benefits inherent to differential signaling while maintaining high pin efficiency of single ended parallel links and offers an alternative solution for high speed chip-to-chip interconnections. The signaling is viewed as a multi-wire coded communication system. The encoding method and the maximum likelihood decoding algorithm are presented. Also a variant of this signaling which requires a reduced complexity receiver is proposed.