Double-Rate Tomlinson-Harashima Precoding for Multi-Valued Data Transmission

Yosuke IIJIMA  Yasushi YUMINAKA  

IEICE TRANSACTIONS on Information and Systems   Vol.E100-D    No.8    pp.1611-1617
Publication Date: 2017/08/01
Publicized: 2017/05/19
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2016LOP0014
Type of Manuscript: Special Section PAPER (Special Section on Multiple-Valued Logic and VLSI Computing)
Category: VLSI Architecture
multi-valued data transmission,  equalization,  Tomlinson-Harashima precoding,  high-speed interface,  serial link,  

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The growing demand for high-speed data communication has continued to meet the need for ever-increasing I/O bandwidth in recent VLSI systems. However, signal integrity issues, such as intersymbol interference (ISI) and reflections, make the channel band-limited at high-speed data rates. We propose high-speed data transmission techniques for VLSI systems using Tomlinson-Harashima precoding (THP). Because THP can eliminate ISI by inverting the characteristics of channels with limited peak and average power at the transmitter, it is suitable for implementing advanced low-voltage and high-speed VLSI systems. This paper presents a novel double-rate THP equalization technique especially intended for multi-valued data transmission to further improve THP performance. Simulation and measurement results show that the proposed THP equalization with a double sampling rate can enhance the data transition time and, therefore, improve the eye opening.