This inventor holds 4 USPTO granted patents and 2 published patent applications and 2 EPO patents. Top assignee: Ntt Docomo, Inc.. Active years: 2011-2013.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2011-2013
Title: Junya Ohkawara: Innovator in Digital Predistortion Technology
Introduction
Junya Ohkawara is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of digital predistortion technology, holding a total of 4 patents. His work focuses on enhancing the performance of power amplifiers through innovative methods.
Latest Patents
One of his latest patents is the "Power series digital predistorter and distortion compensation control method therefor." This invention provides a power series digital predistorter capable of adjusting the coefficients of a frequency characteristic compensator at high speed. The controller in this digital predistorter collectively sets adjustment amounts for the phases and amplitudes in bands of an N-th order frequency characteristic compensator. It also determines whether an index indicating the degree of cancellation of a distortion component generated in a power amplifier meets a preset condition. If the index does not satisfy the condition, the system performs control to reset the adjustment amounts for both phases and amplitudes.
Another notable aspect of his patent involves obtaining coefficients used in finding a new quadratic function that indicates the dependence of a distortion component on a coefficient by the least square method. These coefficients are derived from a relational expression based on a quadratic function indicating unupdated distortion component coefficient dependence.
Career Highlights
Junya Ohkawara is currently employed at NTT Docomo, Inc., where he continues to develop cutting-edge technologies in telecommunications. His work has been instrumental in advancing the efficiency and effectiveness of digital signal processing.
Collaborations
He has collaborated with notable colleagues, including Yasunori Suzuki and Shoichi Narahashi, contributing to various projects that enhance the capabilities of digital predistortion technology.
Conclusion
Junya Ohkawara's innovative work in digital predistortion technology has made a significant impact in the field of telecommunications. His patents reflect a commitment to improving power amplifier performance, showcasing his expertise and dedication to innovation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile