MIMO-OFDM Receiver using One-Bit Analog-Digital Converter Utilizing Noise

2023 Fiscal Year Final Research Report

• Project/Area Number: 20H02149
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 21020:Communication and network engineering-related
• Research Institution: Nagoya University
• Principal Investigator: Yamazato Takaya 名古屋大学, 教養教育院, 教授 (20252265)
• Co-Investigator(Kenkyū-buntansha): 齋藤 将人 琉球大学, 工学部, 准教授 (30335476)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: 確率共鳴現象 / 1bitアナログ/デジタル変換器 / MIMO-OFDM

Outline of Final Research Achievements

This study shows that a 1-bit analog-to-digital converter (1-bit ADC) with the lowest resolution can receive signals beyond its resolution by utilizing noise. The main goal is to establish a fundamental theory of signal reception using a 1-bit ADC that exploits noise, building on the results of previous investigations into stochastic resonance phenomena. The target signal is the MIMO-OFDM signal used in fifth-generation mobile communications (5G). Through the development of receiver and reception experiments, the study demonstrates that even complex signals like MIMO-OFDM can be demodulated by a receiver using a 1-bit ADC that utilizes noise.

Free Research Field

通信・ネットワーク

Academic Significance and Societal Importance of the Research Achievements

これまで雑音は，工学的には邪魔なものとしてフィルタ処理等を駆使して積極的に取り除かれてきた．
これに対し，本研究では雑音を積極的に利用する．あえて雑音を利用する通信システムの検討を行うことで，これまでとはまったく異なる考え方に基づく，新しい通信システムの構築を目指している．ここに本研究の学術的独自性と創造性がある．