Hiroshi Nishimoto

Title: Hiroshi Nishimoto: Innovator in Signal Transmission Technology

Introduction

Hiroshi Nishimoto is a notable inventor based in Sapporo, Japan. He has made significant contributions to the field of communication systems, particularly in the area of signal transmission using multiple antennas. His innovative approach has led to the development of a patented method that enhances the efficiency of signal transmission.

Latest Patents

Hiroshi Nishimoto holds a patent for a "Method for deriving weight vectors to be used at the time of transmitting signals from a plurality of antennas, and transmitting apparatus and communication system utilizing said method." This patent describes a system where multiple antennas transmit multicarrier signals composed of various streams. The invention includes an IF unit that acquires a channel matrix per carrier, which is determined by the number of transmitting and receiving antennas. A baseband processing unit then derives a common autocorrelation matrix and a steering matrix through eigenvalue decomposition. This process allows for the derivation of weight vectors for multiple streams, ensuring orthonormalization on the matrices obtained from the steering matrix and channel matrix.

Career Highlights

Throughout his career, Hiroshi Nishimoto has worked with prominent organizations, including Sanyo Electric Co., Ltd. and Hokkaido University. His experience in these institutions has contributed to his expertise in communication technologies and signal processing.

Collaborations

Hiroshi has collaborated with notable colleagues such as Seigo Nakao and Yasutaka Ogawa. Their joint efforts have further advanced the research and development in the field of communication systems.

Conclusion

Hiroshi Nishimoto's contributions to signal transmission technology through his innovative patent demonstrate his significant impact on the field. His work continues to influence advancements in communication systems, showcasing the importance of innovation in technology.