Duty cycle and noise floor estimation with welch FFT for spectrum usage measurements. - Kenta Umebayashi; Ryota Takagi; Naoki Ioroi; Yasuo Suzuki; Janne J. Lehtomäki (CrownCom, 2014)

A Simple and Fast CU Division Algorithm for HEVC Intra Prediction. - Yankang Wang; Ryota Takagi; Genki Yoshitake (IEICE Trans. Inf. Syst., 2017)