Field Experiments on Open-Loop Type Transmit Diversity in OFDM Radio Access

Shohei TSUCHIDA  Mamoru SAWAHASHI  Hidekazu TAOKA  Kenichi HIGUCHI  

IEICE TRANSACTIONS on Communications   Vol.E92-B    No.5    pp.1705-1713
Publication Date: 2009/05/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.1705
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
OFDM,  transmit diversity,  SFBC,  SFBC+FSTD,  

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This paper presents field experiments on open-loop transmit diversity in downlink OFDM based radio access conducted in a measurement course in Yokosuka city near Tokyo. The experimental results obtained under actual propagation channel conditions show that Space Frequency Block Code (SFBC) and the combination of SFBC and Frequency Switched Transmit Diversity (FSTD) (or Cyclic Delay Diversity (CDD)) are the most promising open-loop transmit diversity schemes for two- and four-antenna transmission, respectively, from the viewpoint of the required average received signal-to-noise power ratio (SNR).