Comparison of Spectrally Efficient Coding Techniques for High-Speed VLSI Data Transmission
Yasushi Yuminaka, Yuuki Takada and Tomonao Okada
In VLSI systems, channel bandwidth limitation becomes a crucial problem as the required data rate communication increases, as high-frequency channel loss significantly degrades transmission performance. In this paper, we compare non-return-to-zero (NRZ) binary and other coding techniques, e.g. 4-PAM (pulse amplitude modulation) for high-speed data transmission by fabricating a test board of a micro-strip line. By extracting the micro-strip line parameters, we carry out co-simulations to evaluate spectrally efficient coding for high-speed data transmission. We also consider the conditions for which 4-PAM signaling provides an advantage over NRZ signaling from the viewpoint of channel profiles.
Keywords: High-speed serial link, multiple-valued logic, coding, PAM (pulse amplitude modulation), partial response signaling