Development of a Multi-Valued Symbol Detection Method Utilizing Statistical Evaluation Techniques for High-Speed Multi-Valued Data Transmission

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K11819
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 60040:Computer system-related
• Research Institution: Oyama National College of Technology
• Principal Investigator: Yosuke Iijima 小山工業高等専門学校, 電気電子創造工学科, 准教授 (90565441)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 高速ディジタル伝送 / 多値伝送方式 / 伝送歪み / 多値符号判定 / 統計的評価 / ２次元マッピング / Linear mixture model

Outline of Final Research Achievements

In this study, we investigated a novel multi-valued symbol determination method for high-speed transmission techniques within large-scale integrated circuit systems, focusing on the PAM-4 (Pulse Amplitude Modulation-4) data transmission scheme. We examined the unique symbol transition patterns of multi-level transmission and their impact on receiver characteristics. A new transmission evaluation method using two-dimensional mapping was developed, along with a corresponding symbol determination approach. Throughout the research, we explored the elemental technologies necessary for implementation and assessed the feasibility of symbol determination in situations where traditional eye pattern evaluation was challenging. We also conducted a fundamental evaluation of a high-speed transmission system based on the proposed method, demonstrating its effectiveness.

Free Research Field

ディジタル信号処理

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、高速な通信システムにおける通信品質の評価に用いられる従来のアイパターン評価に加えて、新たな評価手法を提案するものである。本研究成果の手法は、未知の送信データにて符号間干渉の影響を評価する事ができ、受信端でのサンプリング値のみを用いることから伝送システム上でのリアルタイムでの評価も期待できる。さらに、この評価手法に基づく新たな概念での伝送システムの構成に向けた要素技術を開発した。