Plane-Wave and Vector-Rotation Approximation Technique for Reducing Computational Complexity to Simulate MIMO Propagation Channel Using Ray-Tracing

Wataru YAMADA  Naoki KITA  Takatoshi SUGIYAMA  Toshio NOJIMA  

IEICE TRANSACTIONS on Communications   Vol.E92-B   No.12   pp.3850-3860
Publication Date: 2009/12/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.3850
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antennas and Propagation
MIMO propagation channel prediction technique,  ray-tracing method,  imaging algorithm,  substitution technique,  

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This paper proposes new techniques to simulate a MIMO propagation channel using the ray-tracing method for the purpose of decreasing the computational complexity. These techniques simulate a MIMO propagation channel by substituting the propagation path between a particular combination of transmitter and receiver antennas for all combinations of transmitter and receiver antennas. The estimation accuracy calculated using the proposed techniques is evaluated based on comparison to the results calculated using imaging algorithms. The results show that the proposed techniques simulate a MIMO propagation channel with low computational complexity, and a high level of estimation accuracy is achieved using the proposed Vector-Rotation Approximation technique compared to that for the imaging algorithm.