Tohoku University Technology: Frequency spectrum regeneration method, receiver and reception method: T18-096
Real-time monitoring of several different frequency bands
In recent years, with the diffusion of the wireless Internet of Things (IoT), interference between different IoT systems are reported. In order to avoid those interferences, real-time frequency detection techniques are used to monitor signals and noise in the IoT frequency band in milliseconds level. However, monitoring these bands in real time all at once using Nyquist sampling is not easy because the high-speed analog-to-digital converter (ADC) that exceeds 12 Ghz is necessary. This invention made possible to monitor in real-time several different frequency bands with a real-time frequency monitor using an undersampling reception method by following steps: the step of obtaining a frequency spectrum from 0 to the Nyquist frequency, the step of generating a frequency spectrum by reversing the data at each Nyquist frequency, and the step of performing a minimum value calculation on each of the obtained above data to generate a single frequency spectrum which reproduces the received frequency spectrum.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): 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, and Showa Medical University.
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