Development of Broadband Telecommunications System for Railways Using Laser Technology

Kazuki Nakamura, Shingo Nakagawa, Hiroshi Matsubara, Daisuke Tatsui, Kiyotaka Seki, Shinichiro Haruyama, Fumio Teraoka

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We developed a high-speed telecommunication system for use on railways to improve customer service and the efficiency of operator's telecommunications between ground facilities and trains under operation. We built a mobile telecommunication system, capable of achieving a transfer rate of 1 Gbps in theory, by utilizing laser beam communications technology. We carried out a field test using trains in active service, and obtained results in which a transfer rate of approximately 700 Mbps in the TCP layer was achieved between the ground and a train running at a speed of approximately 130 km/h.

Original languageEnglish
Pages (from-to)45-56
Number of pages12
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number3
Publication statusPublished - 2015 Feb 1


  • broadband telecommunication system
  • handover
  • laser beam tracking method
  • mobile telecommunication

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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