A novel spectrum sensing scheme using clock timing extraction based feature detection. - Kenta Sakurai; Masahiro Umehira; Shigeki Takeda (APCC, 2013)

Feasibility of RSSI based access network detection for multi-band WLAN using 2.4/5GHz and 60GHz. - Masahiro Umehira; Gen Saito; Sho Wada; Shigeki Takeda; Teruyuki Miyajima; Kenichi Kagoshima (WPMC, 2014)

A twin cylinder model for moving human body shadowing in 60GHz WLAN. - Ting Wang; Masahiro Umehira; Hiroyuki Otsu; Shigeki Takeda; Teruyuki Miyajima; Kenichi Kagoshima (APCC, 2015)

Further evaluation of frequency cooperative ARQ scheme for multi-band WLAN. - Toshiyasu Motegi; Teruyuki Miyajima; Masahiro Umehira; Shigeki Takeda (ISCIT, 2015)

A Modified DFTs-OFDM with DC Subcarrier Shift for Low PAPR and DC Offset Error Robustness. - Shigeki Nihei; Masahiro Umehira; Shigeki Takeda (VTC Spring, 2015)

Performance Evaluation of SSB Transmission of DFTs-OFDM Using Multi-Level BPSK through Nonlinear HPA. - Masahiro Umehira; Shigeki Nihei; Hirokazu Fusayasu; Teruyuki Miyajima; Shigeki Takeda; Jun Mashino; Takatoshi Sugiyama (VTC Spring, 2015)

Experimental evaluation of a spectrum occupancy rate measurement method based on LSE estimation of Gaussian noise CDF. - Masahiro Umehira; Shota Rachi; Shigeki Takeda (APCC, 2016)

A novel overlap FFT filter-bank using windowing and smoothing techniques to reduce adjacent channel interference for flexible spectrum access. - Motohiro Tanabe; Akira Saito; Masahiro Umehira; Shigeki Takeda (ICTC, 2016)

Improving Performance by Countering Human Body Shadowing in 60GHz Band Wireless Systems by Using Two Transmit and Two Receive Antennas. - Tomoaki Nagayama; Shigeki Takeda; Masahiro Umehira; Kenichi Kagoshima; Teruyuki Miyajima (IEICE Trans. Commun., 2016)

Feasibility of HPA Linearization System using Amplitude Reference Pilot Signal. - Takuya Okamoto; Masahiro Umehira; Xiaoyan Wang 003; Shigeki Takeda (APCC, 2018)

Energy Efficient Learning-Based 60GHz Band Coverage Prediction for Multi-Band WLAN. - Xiaoyan Wang 003; Masahiro Umehira; Shigeki Takeda; Hiroyuki Otsu; Takyuya Kawatani (VTC Fall, 2018)

Overlap-Windowed-DFTs-OFDM with Overlap FFT Filter-Bank for Flexible Uplink Access in 5G and Beyond. - Takahiro Okano; Masahiro Umehira; Xiaoyan Wang 003; Shigeki Takeda (VTC Fall, 2018)

Energy Efficient Learning-Based Indoor Multi-Band WLAN for Smart Buildings. - Xiaoyan Wang 003; Masahiro Umehira; Hiroyuki Otsu; Takyuya Kawatani; Shigeki Takeda (IEEE Access, 2018)

Numerical Link Outage Probability Assessment using Meteorological Data for THz-Band Outdoor Wireless Communication Systems. - Yuki Hatahara; Masahiro Umehira; Xiaoyan Wang 003; Shigeki Takeda (WPMC, 2019)

A Feasibility Study on the Safety Confirmation System Using NFC and UHF Band RFID Tags. - Shigeki Takeda; Kenichi Kagoshima; Masahiro Umehira (IEICE Trans. Inf. Syst., 2019)

DPD based HPA linearizer using in-band operation point estimation pilot for mobile device applications. - Akira Tada; Masahiro Umehira; Xiaoyan Wang 003; Shigeki Takeda (ICSPCS, 2020)

A Framework to Determine Secure Distances for Either Drones or Robots Based Inventory Management Systems. - Budi Rahmadya; Ran Sun; Shigeki Takeda; Kenichi Kagoshima; Masahiro Umehira (IEEE Access, 2020)

A Battery-Less RFID-Based Wireless Vibration and Physical-Shock Sensing System Using Edge Processing for Long-Term Measurements. - Zequn Song; Ran Sun; Budi Rahmadya; Shigeki Takeda (ITNAC, 2021)

FFT-based frequency domain filter design for multichannel overlap-windowed-DFTs-OFDM signals. - Motoki Ishibashi; Masahiro Umehira; Xiaoyan Wang 003; Shigeki Takeda (VTC Spring, 2021)

A Simplified DPD Linearizer using Operation Point Estimation Pilot Signals for Mobile Terminal Application in TDD Wireless Systems. - Atsushi Masubuchi; Masahiro Umehira; Xiaoyan Wang 003; Shigeki Takeda (WPMC, 2021)

Antenna Element Space Interference Cancelling Radar for Angle Estimations of Multiple Targets. - Ran Sun; Junichirou Sakai; Kouhei Suzuki; Jiaying Zheng; Shigeki Takeda; Masahiro Umehira; Xiaoyan Wang 003; Hiroshi Kuroda (IEEE Access, 2021)

RNN-based Interference Suppression Method for CS radar: Simulation and Experimental Evaluations. - Ryoto Koizumi; Xiaoyan Wang 003; Masahiro Umehira; Shigeki Takeda; Ran Sun (ICAIIC, 2023)

A Feasibility Study on Monitoring Earthquake-Caused Furniture Vibrations Using Radiofrequency Identification Sensor Tags. - Zequn Song; Budi Rahmadya; Ran Sun; Shigeki Takeda (Sensors, 2023)

Indoor Area Estimation System Using RSSI-Measuring Handheld Reader Utilizing Directional Reference RFID Tags and Machine Learning. - Danang Kumara Hadi; Zequn Song; Budi Rahmadya; Shogo Kozume; Tomonori Sumiya; Ran Sun; Shigeki Takeda; Xiaoyan Wang 003 (IEEE Access, 2024)

Experimental Evaluations on Learning-Based Inter-Radar Wideband Interference Mitigation Method. - Ryoto Koizumi; Xiaoyan Wang 003; Masahiro Umehira; Ran Sun; Shigeki Takeda (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2024)

Wideband Interference Suppression for Automotive mmWave CS Radar: From Algorithm-Based to Learning-Based Approaches. - Xiaoyan Wang 003; Ryoto Koizumi; Masahiro Umehira; Ran Sun; Shigeki Takeda (IEICE Trans. Commun., 2024)