Advances in Adaptive Antenna Technologies in Japan

Yasutaka OGAWA  Takeo OHGANE  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.7   pp.1704-1712
Publication Date: 2001/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications)
adaptive antenna,  mobile communication,  MMSE criterion,  CDMA,  SDMA,  

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The number of studies on adaptive antennas has greately increased in resent years in Japan. Most of these studies have sought to enhance the capacity and suppress multipath signals in wireless mobile communications. Adaptive antennas are expected to play an important role in future mobile radio systems. In this paper, we review the history and trends of adaptive antenna studies in Japan. We describe typical adaptive processing algorithms and contributions by Japanese researchers. We then introduce some applications of adaptive antennas for mobile communications. Furthermore, we discuss multi-dimensional signal processing, which is an extended version of the adaptive antenna.