Sensor network systems with 100%-coverage by using sensor collaborative beam forming

• Project/Area Number: 25420370
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Okayama University
• Principal Investigator: Tomisato Shigeru 岡山大学, 自然科学研究科, 准教授 (60362951)
• Co-Investigator(Kenkyū-buntansha): DENNO SATOSHI 岡山大学, 大学院自然科学研究科, 教授 (80378835)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: センサ協調 / ビーム形成 / 周波数オフセット / 消費電力 / センサネットワーク / 協調ビーム形成 / 消費電力低減 / センサ協調ビーム形成 / 位相誤差 / カバレッジ

Outline of Final Research Achievements

This research studies adaptive transmission and frequency offset estimation for sensor collaborative beam forming. In addition, power consumption reduction effect with the beam forming is evaluated by computer simulation.
A sensor collaborative beam forming method with adaptive transmission is proposed in which collaborative sensor selection and beam forming are performed according to obtained reception quality in a receiving sensor. The simulation result with the proposed method shows that total power consumption of the beam forming with 5 collaborative sensors can be reduced by 60%. The result also shows that offset frequency among transmitting and collaborative sensors can be estimated at practical accuracy even under co-channel interference.

Research Products

• [Journal Article] センサネットワーク用適応送信型センサ協調ビーム形成法 (2015)
  • Author(s): 藤田将大，別府多久哉，冨里繁，田野哲，秦正治
  • Journal Title: 電子情報通信学会 和文論文誌B Volume: J98-B Pages: 1146-1154
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] センサネットワークシステムのための特異値分解を用いた繰返し周波数オフセット推定 (2014)
  • Author(s): 田野 哲, 長谷部 雅孝, 冨里 繁, 秦 正治
  • Journal Title: 電子情報通信学会 論文誌B Volume: vol.J97-B, no.12 Pages: 1199-1212
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Iterative SVD-based frequency offset estimation with decorrelation for wireless sensor networks (2014)
  • Author(s): Satoshi Denno, Masataka Hasebe, Shigeru Tomisato, and Masaharu Hata
  • Organizer: 17th International Symposium on Wireless Personal Multimedia Communications, WPNC2014
  • Place of Presentation: シドニー
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] 適応送信型センサ協調ビーム形成法における周波数オフセットの影響 (2014)
  • Author(s): 藤田 将大, 小椋 あかね, 冨里 繁, 田野 哲, 秦 正治
  • Organizer: 電子情報通信学会 短距離無線通信研究会
  • Place of Presentation: 横須賀市
  • Year and Date: 2014-08-18
• [Presentation] 適応送信型センサ協調ビーム形成法の受信特性 (2014)
  • Author(s): 藤田 将大, 冨里 繁, 田野 哲, 秦 正治
  • Organizer: 電子情報通信学会 無線通信システム研究会
  • Place of Presentation: 京都市
  • Year and Date: 2014-07-30 – 2014-08-01
• [Presentation] センサネットワークシステムのための特異値分解を用いた繰返し周波数オフセット推定 (2014)
  • Author(s): 田野 哲, 長谷部 雅孝, 冨里 繁, 秦 正治
  • Organizer: 電子情報通信学会 短距離無線通信研究会
  • Place of Presentation: 鎌倉市
  • Year and Date: 2014-06-16
• [Presentation] 適応送信型センサ協調ビーム形成法の消費電力低減効果 (2013)
  • Author(s): 藤田 将大, 別府 多久哉, 冨里 繁, 田野 哲, 秦 正治
  • Organizer: The 15th IEEE Hiroshima Student Symposium
  • Place of Presentation: 鳥取
• [Presentation] Iterative frequency offset estimation based on singular value decomposition (2013)
  • Author(s): Masataka Hasebe, Satoshi Denno, Shigeru Tomisato, and Masaharu Hata
  • Organizer: 2013 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2013
  • Place of Presentation: 沖縄
• [Presentation] SVD-based frequency offset estimation in the presence of co-channel interference for DS-SS sensor networks (2013)
  • Author(s): Masataka Hasebe, Satoshi Denno, Shigeru Tomisato, and Masaharu Hata
  • Organizer: 2013 International Conference on Sensor Network and Mobile Computing, ICSNMC 2013
  • Place of Presentation: 香港
• [Presentation] センサ強調ビーム形成法における適応送信手法による受信特性改善効果 (2013)
  • Author(s): 別府 多久哉, 藤田 将大，冨里 繁, 田野 哲，秦 正治
  • Organizer: 電子情報通信学会短距離無線通信研究会
  • Place of Presentation: 東京