白井研究室の研究業績
2007年度(平成19年度)


白井研究室で行われた研究のうち,論文等の形で学術論文誌等に公表されたものを紹介します.
  1. 論文 等
    1. 2007.8; S. Mochizuki, H. Wakayanagi, T. Hamada, S. Watanabe, M. Taki, Y. Yamanaka, and H. Shirai: "Effects of Ear Shape and Head Size on Simulated Head Exposure to a Cellular Phone," IEEE Trans. Electromagnetic Compatibility, Vol.49, No.3, pp.512-518, 2007.
      [Abstract]: The dependence of the specific absorption rate (SAR) on ear shape and head size has been investigated using human-head and cellular-phone models. Cubical head and realistic head models were used. Various ear shapes were used with the cubical head model, and a low-loss, thin ear or a lossy realistic ear were used with the realistic head models. The SAR distribution depends significantly on the shape of the ear, regardless of the head model. The effects of the head size have been investigated using a 90th-percentile head model and a Japanese-average head model. The head size has much less of an effect than the ear shape. The measurement results have been validated by numerical calculation and support the use of the specific anthropomorphic mannequin (SAM) standard head model.
    2. 2007.9; A. Yamamoto, K. Ogawa and H. Shirai: "Empirical Investigation of the LOS Propagation Characteristics on an Undulating Road for Millimeter Wave Inter-Vehicle Communication," IEICE Trans. Electronics., Vol.E90-C, No.9, pp.1807-1815, 2007.
      [Abstract]: We investigated the radio propagation characteristics for line-of-sight (LOS) inter-vehicle communication (IVC) at 60 GHz on an actual road with an undulating surface. Radio propagation tests between two moving vehicles were carried out on a test course. From this, it was found that the measured received power on the actual road and the results calculated for a flat road approximately follow logarithmic normal distributions. To investigate this phenomenon in detail, a propagation test between two stationary vehicles on a road was performed. Furthermore, calculations using geometrical optics taking road undulation into consideration demonstrated that undulation in the road can cause variations in the received power that follow a logarithmic normal distribution. Finally, the received power for moving vehicles on an undulating road was calculated using the model.

  2. 国際会議発表 等
    1. 2007. 6; R. Sato, H. Sato, and H. Shirai, "Accurate Ray-Launching Analysis for Indoor Propagation Through a High Lossy Wall," Proc. of 2007 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, CDROM, HI, USA.
    2. 2007. 6; A. Yamamoto, K. Ogawa, T. Horimatsu, K. Sato, M. Fujise, and H. Shirai, "A Propagation Model Considering the Effect of Windows for 60GHz Automotive Radio Communications," Proc. of 3rd International Conference on Electromagnetic Near-Field Characterization and Imaging, CDROM, Missouri, USA.
    3. 2007. 8; R. Sato and H. Shirai, "Accuracy Estimation of Simplified Ray-launching Analysis for Indoor Propagation Through High LossyWall," Proc. of 2007 International Symposium on Antennas and Propagation (ISAP 2007), CDROM, Niigata, Japan.
    4. 2007. 8; H. Shirai and Y. Hiramatsu, "Reconstruction Scheme for Polygonal Cylindrical Targets with Curved Surfaces," Proc. of Progess in Elecromagnetics Research Symposium 2007 in Prague, CDROM, Prague, Czech Republic.
    5. 2007. 8; A. Kanezaki, T. Sakai, S. Watanabe, and H. Shirai, "Effects of Parameters of a Dosimetric Human Model on Temperature Elevation Due to Millimeter-Wave Exposure," Proc. of Progess in Elecromagnetics Research Symposium 2007 in Prague, CDROM, Prague, Czech Republic.
    6. 2007. 9; H. Shirai, R. Sato, K. Otoi, "Electromagnetic Wave Progpagation Estimation by 3-D SBR Method," Proc. of 2007 International Conference on Electromagnetics in Advanced Applications, CDROM, Turin, Italy.
    7. 2007. 12; A. Amornthipparat, H. Shirai, and K. Yonezawa, T. Inoue, and M. Hatori, "Street-Cell NLOS Path Loss Estimation using SBR Method," Proc. of 2007 Asia-Pacific Microwave Conference, CDROM, Bangkok, Thailand.
    8. 2008. 1; A. Amornthipparat, H. Shirai, and K. Yonezawa, and T. Inoue, "NLOS Path Loss Evaluation for Street-Cell Environment," Proc. of 2008 IEEE Radio and Wireless Symposium, CDROM, Orlando, FL, USA.

  3. 学会, 研究会発表 等
    1. 2007.4; 金崎昭夫,酒井泰二,渡辺聡一,白井宏, 「皮膚組織の含水率がミリ波帯電波照射時の温度上昇に与える影響」, 信学技報, vol. 107, no. 25, EMCJ2007-3, pp. 13-18.
    2. 2007.9; 木村和紀,北藪透,前山利幸,白井宏, 「2信号同時受信におけるサンプリング周波数選択方法」, 電子情報通信学会,2007年ソサイエティ大会,B-17-16.
    3. 2007.9; 井上徹,木村亮太,船田龍平,原田博司,白井宏, 「畳込み符号化QAM変調を用いる直交周波数分割多元接続方式におけるインタリーブ最適化に関する一検討」, 電子情報通信学会,2007年ソサイエティ大会,B-5-18.
    4. 2007.9; 蓮沼卓也,林俊光,山本温,白井宏,小川 晃一,音居謙吾, 「3次元SBR法を用いた市街地電波伝搬解析」, 電子情報通信学会,2007年ソサイエティ大会,B-1-15.
    5. 2007.9; 金崎昭夫,酒井泰二,渡辺聡一,平田晃正,白井宏, 「ミリ波帯電波照射時の温度上昇に体温調節機能が与える影響」, 電子情報通信学会,2007年ソサイエティ大会,B-4-24.
    6. 2007.10; 佐藤亮一, 白井宏,  「損失壁透過におけるレイランチング法の精度改善について」, 第36回電磁界理論シンポジウム,EMT-07-86, pp.31-36.
    7. 2007.10; 中溝祥景白井宏平松義範, 「周波数及び時間領域におけるRCS値を用いた柱状散乱体の形状認識」, 第36回電磁界理論シンポジウム,EMT-07-96.
    8. 2007.10; 金崎昭夫,酒井泰二,渡辺聡一,平田晃正,白井宏, 「ミリ波帯電波照射による体温上昇の理論解析による検討」, 第36回電磁界理論シンポジウム,EMT-07-130.
    9. 2008.3; 中溝祥景白井宏, 「後方散乱断面積を用いた柱状散乱体の形状認識とその可視化」, 電子情報通信学会,2008年総合大会,CS-1-11.
    10. 2008.3; 前川耕一郎白井宏, 「電磁界の可視化表現」, 電子情報通信学会,2008年総合大会,CS-1-12.
    11. 2008.3; 金崎昭夫,酒井泰二,渡辺聡一,白井宏, 「ミリ波帯電波照射による円筒モデル内のSAR解析」, 電子情報通信学会,2008年総合大会,B-4-53.

  4. その他