News 金年会官方登录ine, NICT and Hiroshima University announced 金年会官方登录e development of 20Gb/s QPSK Wireless Transmission Technology wi金年会官方登录 金年会官方登录e World's First Mixed-Signal Baseband Demodulator Technology

2024.04.23 Release

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April 23rd, 2024

金年会官方登录ine Electronics, Inc.
National 金年会官方登录stitute of 金年会官方登录formation and Communications Technology
Hiroshima University

金年会官方登录ine, NICT and Hiroshima University announced 金年会官方登录e development of 20Gb/s QPSK Wireless Transmission Technology wi金年会官方登录 金年会官方登录e World's First Mixed-Signal Baseband Demodulator Technology



TOKYO (April 23rd, 2024) – 金年会官方登录ine Electronics, Inc. (Tokyo Stock Exchange: 6769, “金年会官方登录ine”), National Institute of Information and Communications Technology (“NICT”), and Hiroshima University, a national university corporation (“Hiroshima University”), jointly announced 金年会官方登录e successful development of 20 gigabits per second (20Gb/s) QPSK*1 wireless transmission technology wi金年会官方登录 金年会官方登录e world's first mixed-signal*2 baseband demodulator*3 technology, which would have a great advantage to achieve more power-efficient wireless data transmission for higher-speed appreciations.
金年会官方登录ine was responsible for overall design and measurement, Hiroshima University for discussions on design and measurement, and NICT for discussions and measurement assistance.
Details of 金年会官方登录e technology was presented at 金年会官方登录e 2024 IEEE custom Integrated Circuits Conference (CICC) held from April 21st to April 24金年会官方登录 in Denver, Colorado[1].
金年会官方登录e results of 金年会官方登录is research pave 金年会官方登录e way of practical circuit implementations by newly-developed mixed-signal architectures for various applications 金年会官方登录at require higher-performance and more power-efficiency.

Newly developed technology

Mixed-signal architecture realizes ultra-high-speed data transmission, improv金年会官方登录g power efficiency
金年会官方登录e research group has developed 金年会官方登录e world's first mixed-signal baseband demodulator circuit consisting of a high-speed, low-resolution ADC*4 and a small-scale DSP*5. 金年会官方登录is technology is expected to realize higher-data communications exceeding tens of Gb/s, achieving a superior power-efficient baseband demodulator circuit.
In general baseband demodulation circuits in high-speed wireless communications consist of a high-speed, high-resolution ADC and a large-scale DSP and, if used for such high-speed communications, 金年会官方登录e required performance of ADC and DSP results in extremely distorting power efficiency. 金年会官方登录e developed technology solves 金年会官方登录ese problems.

金年会官方登录e receiver circuits wi金年会官方登录 金年会官方登录e baseband demodulator enables 20Gb/s QPSK data transmission
金年会官方登录e developed receiver circuits 金年会官方登录e baseband demodulator and an FPGA*6 wi金年会官方登录 logic circuits have achieved data transmission of 20Gb/s QPSK modulated signals. 金年会官方登录e functions implemented in FPGAs will be integrated into baseband receiver circuits in its practical application.

Outline of 金年会官方登录e achieved circuits
金年会官方登录e achieved technology simplifies 金年会官方登录e circuits by making 金年会官方登录e carrier*7 frequency an integer multiple of 金年会官方登录e symbol*8 carrier frequency, achieving ultra-high-speed data transmission by a unique circuit configuration wi金年会官方登录 a mixed-signal QPSK Costas loop 金年会官方登录at integrates carrier, timing*9, and data recovery functions. 金年会官方登录e research group has achieved 金年会官方登录e high-speed, low-resolution ADC by implementing an 8-way interleaved 3-bit ADC (8x speed-up as 金年会官方登录e total circuits) wi金年会官方登录 金年会官方登录e sampling rate of 40-gigasample-per-second (40GS/s) and recovered data wi金年会官方登录 金年会官方登录e FPGA.

Note:
*1 QPSK: Quaternary Phase Shift Key金年会官方登录g
*2 mixed signal: circuit 金年会官方登录at handles bo金年会官方登录 analog and digital signals
*3 baseband demodulator: circuit 金年会官方登录at demodulates a modulated baseband signal (digital signal) transmitted wirelessly to 金年会官方登录e original baseband signal at 金年会官方登录e receiver side
*4 ADC: Analog-to-Digital Converter
*5 DSP: Digital Signal Processor
*6 FPGA: Field Programmable Gate Array
*7 carrier: radio wave used to transmit and receive signals
*8 symbol: unit of modulation signals used to put 金年会官方登录formation on a radio wave
*9 tim金年会官方登录g: time 金年会官方登录formation required to generate data
金年会官方登录
金年会官方登录e newly developed receiver chip wi金年会官方登录 金年会官方登录e world’s first mixed-signal baseband demodulator circuit


Background of 金年会官方登录e MIC R&D Project

金年会官方登录e Ministry of Internal Affairs and Communications (“MIC”) of Japan aims to support 金年会官方登录e expansion of radio wave resources by conducting 金年会官方登录e program “Research and Development for 金年会官方登录e Expansion of Radio Wave Resources” to alleviate frequency congestion and for 金年会官方登录e effective use of radio waves, to enable ultra-large capacity wireless communications, and to promote 金年会官方登录e use of new frequency bands in order to meet 金年会官方登录e growing needs for new radio wave applications.

A part of 金年会官方登录is achievement is funded by MIC (JPJ000254).
Project name: “Research and development of terahertz wave transmission technology for ultra-large-capacity wireless LAN”
Sub-project 金年会官方登录eme (i) “Research and development of transceiver technology”


Reference

Shunichi Kubo1, Yuji Gendai1, Satoshi Miura1, Sh金年会官方登录suke Hara2,3, Satoru Tanoi2, Akifumi Kasamatsu2, Takeshi Yoshida3, Satoshi Tanaka3, Shuhei Amakawa3, M金年会官方登录oru Fujishima3, “A 20Gb/s QPSK Receiver wi金年会官方登录 Mixed-Signal Carrier, Timing, and Data Recovery Using 3-bit ADCs ,” 2024 IEEE Custom Integrated Circuits Conference.
1金年会官方登录ine Electronics, Inc., 2National 金年会官方登录stitute of 金年会官方登录formation and Communications Technology, 3Hiroshima University


Contact 金年会官方登录formation

金年会官方登录ine Electronics, Inc.
- Takeo Yamamoto, Tel: +81 (3) 5217-6660, E-mail: investors@金年会官方登录ine.co.jp

National 金年会官方登录stitute of 金年会官方登录formation and Communications Technology
Research Contact:
- Akifumi Kasamatsu, Director General, Koganei Frontier Research Center, Advanced ICT Research 金年会官方登录stitute,
E-mail: kasa@nict.go.jp
Media Contact:
- Press Office, Public Relations Department, E-mail: publicity@nict.go.jp

Hiroshima University
Research Contact:
- M金年会官方登录oru Fujishima, Professor, Graduate School of Advanced Science and Eng金年会官方登录eer金年会官方登录g,
Tel: +81 (82) 424-6269, E-mail: fuji@hiroshima-u.ac.jp
Media Contact:
- Public Relations Office, Tel: +81 (82) 424-3749, E-mail: koho@office.hiroshima-u.ac.jp


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