Location History:
- Kanagawa, JP (2018 - 2019)
- Tokyo, JP (2019)
- Yokosuka, JP (2015 - 2020)
- Musashino, JP (2022 - 2023)
Company Filing History:
21 out of 5,289 
3 out of 164 Years Active: 2015-2025
Title: Kengo Horikoshi: Innovator in Optical Transmission Technology
Introduction
Kengo Horikoshi, an accomplished inventor based in Yokosuka, Japan, is notable for his significant contributions to optical transmission technologies. With a remarkable portfolio of 21 patents, Horikoshi has demonstrated a commitment to pushing the boundaries of innovation in this field.
Latest Patents
Horikoshi's latest patents showcases his expertise in adaptive equalization filtering and signal processing methods. One of his recent inventions is an "Adaptive equalization filter and method for updating filter coefficients". This invention involves an adaptive equalization filter designed for optical transmission systems, which includes a main signal filter and a coefficient computation unit that updates the filter coefficients. The process employs a pre-stage filter and a post-stage filter receiving samples of the main signal. The pre-stage coefficient computation unit utilizes feedback control with gradient methods to obtain coefficients. Meanwhile, the post-stage computation unit employs feedforward control. Furthermore, the convolution computation unit integrates the coefficients from both the pre-stage and post-stage filters to obtain those of the main signal filter.
Another innovative contribution is the "Signal processing apparatus, signal processing method, and program". This apparatus includes a coefficient update unit that approximates transmission line characteristics through a predetermined first tap coefficient vector. A zeroing unit generates a second tap coefficient vector by replacing coefficients below a specific threshold with zero. The adaptive filter, based on this vector, facilitates equalization processing on digital signals corresponding to optical signals received via a transmission line.
Career Highlights
Kengo Horikoshi has had an impactful career, primarily working with Nippon Telegraph and Telephone Corporation and NTT Electronics Corporation. His contributions within these esteemed organizations have allowed him to refine his skills in optical transmission and signal processing, leading to numerous innovative patents.
Collaborations
Throughout his career, Horikoshi has collaborated with notable colleagues including Yoshiaki Kisaka and Seiji Okamoto. These professional relationships have further enriched his innovative capabilities and fostered a collaborative environment for technological advancement.
Conclusion
Kengo Horikoshi stands as a significant figure in the field of optical transmission technology. His 21 patents, focusing on adaptive equalization filters and signal processing methods, underline his innovative spirit and technical expertise. As he continues to develop groundbreaking technologies, his work will undoubtedly influence the future of optical communication systems.
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