Affiliation: | (1) Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu-shi, Toyama 939-0398, Japan;(2) Network Solutions Busimess Headquarters, NTT Advanced Technology Corporation, Totsuka-ku, Yokohama-shi, Japan;(3) NTT Network Innovation Laboratories, NTT Corporation, Yokosuka-shi, Japan |