Eiji Ota

Title: Eiji Ota: Innovator in Wireless Communication Technology

Introduction

Eiji Ota is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of wireless communication, holding three patents that enhance transmission efficiency and reduce interference.

Latest Patents

Ota's latest patents include a transmitting apparatus, a receiving apparatus, and a wireless communication method designed to suppress interference between codes. These innovations aim to improve transmission efficiency by reducing the ratio of redundant components that occupy a signal. The transmitting apparatus transmits a signal with a frame structure where multiple symbols follow a pilot symbol with an added guard interval. The receiving apparatus utilizes a long FFT target section to remove delay waves using the pilot symbol, converting the signal to a frequency domain through fast Fourier transformation. Additionally, a frequency equalizing part performs frequency equalization based on communication line estimation values, while an inverse fast Fourier transformation converts the signal back to the time domain.

Another notable patent is the multicarrier transmitting apparatus and method, which focuses on narrowing the dynamic range of multicarrier signals. This innovation prevents cost increments and degradation of power efficiency. The modulating part modulates transport data, and the S/P converting part outputs modulated symbols to an IFFT part in parallel. The IFFT part assigns these symbols to orthogonal subcarriers, performing an inverse fast Fourier transform. A pit clip part ensures that when the instantaneous amplitude of an OFDM signal is low, it replaces this level with a predetermined threshold value, enhancing signal reliability.

Career Highlights

Eiji Ota is currently employed at Panasonic Corporation, where he continues to develop cutting-edge technologies in wireless communication. His work has significantly impacted the efficiency and reliability of communication systems.

Collaborations

Ota collaborates with notable colleagues, including Mitsuru Uesugi and Atsushi Sumasu, contributing to advancements in their field.

Conclusion

Eiji Ota's innovative work in wireless communication technology exemplifies the importance of continuous improvement in transmission methods. His patents reflect a commitment to enhancing communication efficiency and reliability.