An SDM method utilizing height pattern due to two-ray fading characteristics

Ken Hiraga, Kazumitsu Sakamoto, Maki Arai, Tomohiro Seki, Tadao Nakagawa, Kazuhiro Uehara

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A spatial division multiplexing (SDM) transmission method utilizing the characteristics of two-ray fading without relying on narrow beam of the antennas is introduced. This letter formulates the optimized array antenna arrangements and channel capacity as functions of the transmission distance and shows achievable channel capacity for two-and three-element antenna arrays. The letter also describes bandwidth dependency up to 15% bandwidth based on an assumed application to 60-GHz-band gigabit wireless systems. The proposed method provides increased capacity comparable to multiple-input-multiple-output (MIMO) transmission without the extra signal processing cost incurred when using conventional MIMO.

Original languageEnglish
Article number6680603
Pages (from-to)1622-1626
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2013
Externally publishedYes


  • Parallel transmission
  • spatial division transmission
  • two-ray ground reflection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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