LQHR: A Link Quality-based Hybrid Routing Protocol for Wireless Ad Hoc Networks. - Ken Nakaoka; Makoto Oba; Shuji Tasaka (PIMRC, 2006)

A low-power single-chip transceiver for 169/300/400/900 MHz band wireless sensor networks. - Makoto Oba; Eiji Okada; Ayako Tachibana; Koji Takahashi; Masahiko Sagisaka (A-SSCC, 2014)