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Digital Communications Lab
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The lab builds next-generation 6G wireless, from theory to field demonstration.
AboutAbout the lab
Creating the next generation of wireless communications.
The Digital Communications Lab (Harada Lab) studies next-generation wireless communication systems (Beyond 5G/6G mobile communication systems).
It researches and develops the elemental technologies for realizing sixth-generation systems with even greater broadband capacity and ultra-efficient use of frequencies.
Beyond theoretical research, the lab also carries out implementation and field experiments, aiming to produce advanced, practical results that contribute to society.
Key terms
- Full-duplex communication
- Communication that transmits and receives at the same time on the same frequency.
- White space
- Frequencies within already allocated bands that go unused, depending on place and time.
- Wi-SUN
- A low-power wireless communication standard for connecting sensors and meters that can operate on batteries.
ResearchResearch themes
The lab comprehensively pursues research on next-generation (Beyond 5G and 6G) mobile broadband communication systems, dynamic spectrum access communications, and wireless M2M and IoT communication systems, from proposing methods to implementation and demonstration.
*Illustrative imageCellular Communications Beyond 6G
The lab studies, from proposal to demonstration, full-duplex communication that transmits and receives simultaneously on the same frequency, cell-free networks that rethink the concept of the cell, V2X communication for safe autonomous driving, and open-source wireless communication systems.
*Illustrative imageUltra-High-Speed Communication with Millimeter Waves and Terahertz Waves
To achieve high-speed communication exceeding gigabits per second using millimeter waves and terahertz waves, which are higher in frequency than those used by mobile phones, the lab comprehensively studies radio propagation measurement and modeling, testbed development, and transmission method development.
*Illustrative imageUsing Vacant Frequencies Wisely
The lab studies frequency management, communication methods, and communication protocols for using white space, meaning frequencies within allocated bands that are vacant depending on place and time, without interfering with existing users.
*Illustrative imageWi-SUN for Connecting Sensors
The lab studies communication methods and protocols for Wi-SUN, a low-power wireless communication system that can run on batteries and connects large numbers of sensors and meters for disaster prevention and safety. It also works on international standardization.
MembersFaculty
The faculty of the Digital Communications Lab are Professor Hiroshi Harada and Associate Professor Yusuke Koda.
- ProfessorHiroshi Harada
- Associate ProfessorYusuke Koda
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Cellular 5G Equipment - Cell Tower Antennas” Tony Webster / CC BY 2.0 (cropped)
- Cellular Communications Beyond 6G: “Commsignia connected car V2X router. Spielvogel” Spielvogel / CC BY-SA 4.0 (cropped)
- Ultra-High-Speed Communication with Millimeter Waves and Terahertz Waves: “ALMA antenna against cloudy sunset (dv08hrd1-cc)” S. Otarola/ESO / CC BY 4.0 (cropped)
- Using Vacant Frequencies Wisely: “Rigol Spectrum Analyzer DSA 1030A” Dave Clausen from Brooklyn, NY / CC BY 2.0 (cropped)
- Wi-SUN for Connecting Sensors: “CSIRO ScienceImage 3719 CSIROs Fleck wireless sensor network technology” Stephan Brosnan, CSIRO / CC BY 3.0 (cropped)
- Related lab (Microwave Energy Transmission Lab): “Solar power satellite sandwich or abascus concept” NASA / Public domain (cropped)
- Related lab (Advanced Electrical Machinery Engineering Lab): “Blaupunkt CR-4500 - drive unit - tape Drive Capstan, brushless DC electric motor-9992” Raimond Spekking / CC BY-SA 4.0 (cropped)
- Related lab (Integrated Computing Lab): “286 AT motherboard” Mister rf / CC BY-SA 4.0 (cropped)
- Related lab (Electronic Materials and Physical Properties Engineering Lab): “AFM-Raman-TERS” AAMonitor96 / CC BY-SA 3.0 (cropped)
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