Hokkaido Univ. Technology：The most Advanced Analog RoF technology of Beyond 5G (6G)：HK24-009
High-precision control of radio signals with simple configuration
In order to increase the transmission capacity in wireless communication, the use of high frequency bands is being promoted, and it is required to reduce the load of signal processing in the base station. Specifically, the transition from digital optical wireless technology to analog radio-over-fiber (RoF) technology is being studied. However, in A-RoF, it is difficult to control the phase of radio waves in the base station, so MIMO (Multiple Input Multiple Output) signal processing also needs to be performed in the aggregation station. However, in the conventional A-RoF communication system, there is a problem that it is necessary to accurately control the phase of the A-RoF signal for each antenna element. According to the present invention, it has become possible to provide a MIMO signal processing device and an optical wireless communication system that enable MIMO signal processing for beamforming that accurately controls the phase of the A-RoF signal that enable MIMO signal processing for multi-beamforming that accurately controls the phase of the A-RoF signal with monochromatic optical carrier wave.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding basic technology transfer agreements with the following universities (as of April 1, 2026): - Tohoku University - Hirosaki University - Iwate University - Akita University - Fukushima University - Yamagata University - Tohoku Gakuin University - Iwate Medical University - Fukushima Medical University - Aizu University - Miyagi University - Hokkaido University - Muroran Institute of Technology - Showa Medical University - Asahikawa Medical University
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