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Maruta Lab
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The lab uses signal processing to overcome radio interference in wireless communications and also explores applications in other fields.
AboutAbout the lab
Overcoming radio interference and taking communications into new fields
The Maruta Lab conducts research grounded in digital signal processing for wireless communications, aiming to overcome radio interference and apply communication technologies to other fields.
Founded in April 2022, the lab works on frequency sharing, antenna signal processing, optical camera communication, underwater acoustic communication, and more.
The lab values student independence: its basic policy is that, once students have mastered the fundamentals, they work toward their goals on their own.
The lab encourages students to go on to graduate school, but it does not prevent them from taking jobs after completing their bachelor's degree.
Key terms
- Frequency sharing
- The idea of having different wireless communication systems share the same frequency. It is motivated by the depletion of frequency resources
- Co-channel interference
- Radio interference between systems that use the same frequency. The lab aims to remove it through signal processing
- Millimeter wave
- High-frequency radio waves. As the frequency increases, the communication range becomes shorter
NewsLab news
A letter by a master's student was accepted to IEICE Communications Express
A textbook co-authored by Professor Maruta, "Introduction to Wireless Networks," was published
A paper by a master's student was accepted to Journal on Wireless Communications and Networking
A paper by a doctoral student was accepted to IEICE Transactions on Communications
A paper by a master's student was accepted to Journal on Wireless Communications and Networking
ResearchResearch themes
Centered on digital signal processing in wireless communications, the Maruta Lab aims to overcome radio interference and apply communication technologies to other fields. Its work covers frequency sharing, wireless networks with mobile base stations, and communications using light and sound.
*Illustrative imageCommunication methods that overcome radio interference
With the spread of many wireless communication systems such as mobile phones and Wi-Fi, frequency resources are running out. The lab studies signal processing techniques to remove the radio interference (co-channel interference) that arises when different systems share the same frequency.
*Illustrative imageWireless networks that adapt to circumstances
At high frequencies such as millimeter waves, the communication range becomes shorter, and fixed base stations cannot secure coverage in some places. Aiming for networks in which base stations move autonomously to meet communication demand, the lab studies base station movement algorithms and control methods for relay communication between terminals.
*Illustrative imageApplications to communication using light and sound
The lab applies wireless communication technology to communications that use optical fiber, visible light, and sound waves. Because their properties differ, simple application is difficult, so the lab studies modulation and demodulation techniques specialized for optical camera communication, and higher capacity through adaptive algorithms and applied interference cancellation.
MembersFaculty
The members of the Maruta Lab are faculty, a secretary, and students in the doctoral, master's, and undergraduate programs.As of 2026
- ProfessorKazuki Maruta
VoicesStudent voices
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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: “HAARP Antenna Array Transmitter Buildings” Secoy, A / CC BY-SA 4.0 (cropped)
- Communication methods that overcome radio interference: “Sennheiser RS 175 wireless headphone + station 2,44 ghz” Richardkiwi / CC BY-SA 4.0 (cropped)
- Wireless networks that adapt to circumstances: “Cell tower antenna, Zagrebačka cesta” Mnalis / CC BY-SA 4.0 (cropped)
- Applications to communication using light and sound: “Underwater-microphone hg” Hannes Grobe 09:30, 23 June 2007 (UTC), Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany / CC BY-SA 2.5 (cropped)
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