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Higuchi Lab
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A lab researching modulation, multiple access, and MIMO to support wireless communications in 5G and beyond.
AboutAbout the lab
Contributing to the advancement of wireless communications, a technology that will surely endure for all time.
The Higuchi Lab studies new elemental technologies and system protocols to contribute to the advancement of wireless communication systems.
It aims to realize the ultra-high-speed, high-capacity communication, ultra-reliable low-latency communication, and simultaneous connection of massive numbers of terminals required of wireless communications in 5G and beyond.
Lab members divide up the study of a wide range of interrelated elemental technologies.
Key terms
- MIMO
- A transmission method that uses multiple antennas to improve the transmission quality of wireless signals
- HARQ
- A scheme that achieves a low error rate by retransmitting data, at the cost of transmission delay and bandwidth loss
- Wireless access
- A technology for sharing the resources needed for wireless communication, such as time, frequency, and power/code, among multiple user terminals
ResearchResearch themes
The Higuchi Lab aims to realize and advance ultra-high-speed, high-capacity communication, ultra-reliable low-latency communication, massive simultaneous connectivity, ultra-wide coverage expansion, and ultra-low power consumption, as required of wireless communication systems in 5G and beyond. To that end, its research is built on three pillars: digital modulation/demodulation and coding, wireless access and networking, and multi-antenna transmission (MIMO).
*Illustrative imageModulation and Coding
The lab aims to realize modulation and demodulation methods and error-correcting coding that are robust against multipath fading, noise, and interference in the wireless link, along with hybrid automatic repeat request (HARQ) and its control methods.
*Illustrative imageWireless Access and Networking
The lab studies wireless access methods in which multiple terminals share radio resources such as time, frequency, and power/code, aiming for ultra-high-speed, ultra-efficient packet transmission. It also works on advancing cellular networks in which base stations are deployed across an area and in three-dimensional space.
*Illustrative imageMulti-Antenna Transmission
The lab studies MIMO transmission methods, which use multiple antennas to improve the transmission quality of wireless signals. MIMO is a technology that contributes both to higher speed and larger capacity and to higher reliability in wireless communications.
MembersFaculty
The Higuchi Lab is made up of faculty members and master's and undergraduate students.As of 2026
- ProfessorKenichi Higuchi
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: “Pico cell base station by KDDI” Yoh-Plus / CC BY 4.0 (cropped)
- Modulation and Coding: “Mast - geograph.org.uk - 700429” Andy Pearce / CC BY-SA 2.0 (cropped)
- Wireless Access and Networking: “Base transceiver station” No machine-readable author provided. Fsaeed1975 assumed (based on copyright claims). / CC BY 3.0 (cropped)
- Multi-Antenna Transmission: “LteMimoAntennen” BAZ Spezialantennen / CC BY 3.0 (cropped)
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