A Spatial Domain Interference Canceller Using a Multistage Adaptive Array with Precise Timing Estimation

Toshihiko NISHIMURA  Yasuhiko TANABE  Takeo OHGANE  Yasutaka OGAWA  Yoshiharu DOI  Jun KITAKADO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E84-B   No.7   pp.1735-1742
Publication Date: 2001/07/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications)
Category: Adaptive Algorithms and Experiments
Keyword: 
SDMA,  multistage interference canceller,  adaptive array,  FER,  PHS,  

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Summary: 
In SDMA, a spatial domain interference canceller applying a multistage processing concept to the MMSE multibeam adaptive array has an attractive feature. Weak power signals strongly interfered can be detected in the succeeded stages after removing other strong power signals which are already detected. This idea can be enhanced to the reference timing estimation required in the MMSE algorithm. In this paper, the spatial domain interference canceller introducing multistage timing estimation is proposed and its performance is evaluated by computer simulations. The results show that the timing estimation performance highly improved.