Fiber-Optic Microcell Radio Systems with a Spectrum Delivery Scheme. - Ryutaro Ohmoto; Hiroyuki Ohtsuka; Hirofumi Ichikawa (IEEE J. Sel. Areas Commun., 1993)

High isolation analog 4×4 matrix switch LSI for centralized control microcell radio systems. - Mamoru Ogasawara; Hirofumi Ichikawa; Tsuneo Tsukahara (PIMRC, 1994)

Centralized control method for fiber-optic microcell radio system. - Shunji Miura; Hirofumi Ichikawa; Ryoji Yamamoto (VTC, 1994)