Theoretical and experimental analysis of spatial division using antenna directivities in short-range MIMO transmission

M. Arai, T. Seki, K. Hiraga, T. Nakagawa, Kazuhiro Uehara

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5 Citations (Scopus)


A simple method is proposed for achieving short-range multiple-input multiple-output (MIMO) transmission without complicated signal processing. This is achieved by a spatial division that cancels interference between signal streams by using π-phase-shifted antenna directivities in high speed parallel transmission systems at 60 GHz. The method achieves spatial division transmission without MIMO detection even for antenna elements with wide beamwidths. This makes it easy to design antenna elements and reduces signal processing costs in the transmitter and the receiver. Moreover, the method provides almost the same channel capacity as that of the complicated MIMO transmission methods. The optimal antenna array length is derived to maximise the capacity and the validity of the proposed method is confirmed through numerical and experimental analyses at 4.85 GHz.

Original languageEnglish
Pages (from-to)65-67
Number of pages3
JournalElectronics Letters
Issue number2
Publication statusPublished - Jan 16 2014
Externally publishedYes


ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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