Tohoku University Technology: Frequency spectrum reproduction method and receiver: T21-156
Avoid interference between IoT systems and regenerate signal spectrum
In recent years, as wireless IoT has become more popular, real time frequency band spectrum monitoring technology has been developed to avoid interference between different wireless IoT systems. The received signal of this technology is converted from analog to digital signal by multiple analog/digital converter, then the original spectrum is regenerated. However, current technology does not have low loss and low distortion tunable filter, so it is not possible to freely set the bandwidth with a single device. As consequence, the receiver cannot achieve Software Defined Radio. This invention is able to realize a software based spectrum regeneration processing. This frequency spectrum regeneration method does not use a bandpass filter to fold back noise removal, but samples the received frequency spectrum, generates a vector combining each frequency spectrum element and extracts a predetermined band by calculating a solution using an overdetermined decision type algorithm. This enables a software based spectrum regeneration process.
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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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