PAM4 48-Gbit/s wireless communication using a resonant tunneling diode in the 300-GHz band

IEICE Electronics Express

article

Atsushi Oshiro¹  Naoki Nishigami¹  Takumi Yamamoto¹  Yosuke Nishida²  Julian Webber¹  Masayuki Fujita¹  Tadao Nagatsuma¹ 

[1] Graduate School of Engineering Science, Osaka University;ROHM Co., Ltd.

关键词: terahertz;    PAM4;    resonant tunneling diode;    amplified detection;    predistortion;   

DOI  :  10.1587/elex.18.20210494

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

In modern optical communications, pulse amplitude modulation 4 (PAM4) is employed to achieve higher data rates than that achieved by conventional non-return-to-zero format. Meanwhile, there is an increasing interest to convert wired connections to wireless in data centers using high-speed millimeter-wave and terahertz (THz) links. Here, we introduced the PAM4 modulation for THz wireless communications using a resonant tunneling diode (RTD) receiver. Compared with a Schottky-barrier diode receiver, the RTD receiver has higher sensitivity, and a stronger nonlinearity at low input power when it is operated with an amplified detection scheme. We achieved 24-Gbaud (48-Gbit/s) transmission in the 300-GHz band with a quasi-real-time digital signal processing (DSP), which is the fastest PAM4 wireless communication without an offline DSP to the best of our knowledge.

【 授权许可】

CC BY