LDPC Convolutional Codes Based on Parity Check Polynomials with a Time Period of 3. - Yutaka Murakami; Shutai Okamura; Shozo Okasaka; Takaaki Kishigami; Masayuki Orihashi (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

An interference coordination method based on geometric mean of user throughput for heterogeneous networks. - Shozo Okasaka; Yasuaki Yuda; Masayuki Hoshino (PIMRC Workshops, 2013)

Proportional Fair-Based Joint Optimization of Cell Association and Inter-Cell Interference Coordination for Heterogeneous Networks. - Yoshitaka Ikeda; Shozo Okasaka; Masayuki Hoshino; Kenichi Higuchi (VTC Fall, 2014)

Proof-of-Concept of a Millimeter-Wave Integrated Heterogeneous Network for 5G Cellular. - Shozo Okasaka; Richard J. Weiler; Wilhelm Keusgen; Andrey Pudeyev; Alexander Maltsev 001; Ingolf Karls; Kei Sakaguchi (Sensors, 2016)

Joint Optimization of User Association and Inter-Cell Interference Coordination for Proportional Fair-Based System Throughput Maximization in Heterogeneous Cellular Networks. - Yoshitaka Ikeda; Shozo Okasaka; Kenichi Higuchi (IEICE Trans. Commun., 2017)