Remote heartbeat monitoring from human soles using 60-GHz ultra-wideband radar. - Takuya Sakamoto; Shigeaki Okumura; Ryosuke Imanishi; Hirofumi Taki; Toru Sato; Mototaka Yoshioka; Kenichi Inoue; Takeshi Fukuda; Hiroyuki Sakai 001 (IEICE Electron. Express, 2015)