〇Shun Kanai^1,2,3, Hideo Sato^2,3,4, Yoshinobu Nakatani⁵, Fumihiro Matsukura^1,2,3,6, Hideo Ohno^1,2,3,4,6 (1.RIEC, Tohoku Univ., 2.CSIS, Tohoku Univ., 3.CSRN, Tohoku Univ., 4.CIES, Tohoku Univ., 5.Univ. of Electro-Communications, 6.WPI-AIMR, Tohoku Univ.)