Author Affiliations

S. Watanabe,^(1),* F. Futami,⁽¹⁾ R. Okabe,⁽¹⁾ Y. Takita,⁽¹⁾ S. Ferber,⁽²⁾ R. Ludwig,⁽²⁾ C. Schubert,⁽²⁾ C. Schmidt,⁽²⁾ and H.G. Weber⁽²⁾

⁽¹⁾Fujitsu Laboratories Ltd., 4-1-1 Kamikodanaka, Nakahara-ku, Kawasaki 211-8588, Japan

⁽²⁾Fraunhofer Institut Nachrichtentechnik Heinrich-Hertz-Institut, Einsteinufer 37, 10587 Berlin, Germany

^*Corresponding author: shigeki@flab.fujitsu.co.jp