Hideshi Murai

Title: Innovations in Wireless Communication: The Patents of Hideshi Murai

Introduction

Hideshi Murai, a renowned inventor based in Tokyo, Japan, has made significant contributions to the field of wireless communication. With an impressive portfolio of 34 patents, Murai has been instrumental in developing advanced technologies that enhance connectivity and efficiency. This article will delve into his latest patents, career highlights, and collaborations with notable colleagues.

Latest Patents

One of Murai's latest patents is the design of a femto base station. This innovative technology is organized to connect with a wireless communication network and generate a first cell to provide a wireless communication service to user equipment within its coverage area. The base station includes a transceiver with both a transmitter and a receiver, allowing communication with user devices while also featuring a controller. The controller plays a vital role by determining whether the femto base station has entered an energy-saving mode. When this mode is activated, the transmitter is disabled, and if the receiver detects data transmission from user equipment to a macro base station during this time, the controller promptly reconfigures the transmitter. This macro base station can generate a second cell with broader coverage, which encompasses the first cell.

Another significant invention by Murai involves a multi-antenna receiver interference cancellation method and apparatus. Here, a composite signal—made up of several component signal streams—is processed using QR-decomposition to identify symbols and calculate decision metrics for each stream. The method employs soft serial interference cancellation on the composite signal based on the detected symbols. The performance is assessed to determine if symbol detection is more precise with or without this cancellation, ensuring optimal decoding of signal streams based on the most accurate detection results.

Career Highlights

Throughout his career, Hideshi Murai has worked with several prestigious companies, including Mitsubishi Electric Corporation and Telefonaktiebolaget LM Ericsson. His contributions to these organizations have facilitated advancements in wireless technology, emphasizing the importance of innovation in the telecommunications industry.

Collaborations

Murai's work has also involved collaborations with notable peers such as Yasuhiro Yano and Nicolas Voyer. These partnerships have allowed for the exchange of ideas and expertise, further contributing to groundbreaking advancements in wireless communication.

Conclusion

Hideshi Murai's extensive work in the realm of wireless communications has led to numerous patents that push the boundaries of technology. His innovative spirit and collaborative approach continue to inspire future developments in this dynamic field, making him a pivotal figure in the industry.