Fast MIMO Channel Calculation Technique for Multi-Antenna System Using Signal Modulation for FDTD Method

Kazuma OUCHIDA  Naoki HONMA  Yoshitaka TSUNEKAWA  

IEICE TRANSACTIONS on Communications   Vol.E98-B    No.11    pp.2300-2306
Publication Date: 2015/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E98.B.2300
Type of Manuscript: PAPER
Category: Antennas and Propagation
FDTD,  signal modulation,  channel capacity,  multi-antenna,  MIMO,  

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This paper proposes a new method that combines signal modulation and FDTD (Finite-Difference Time-Domain) simulations to reduce the computation time in multiple-antenna analysis. In this method, signals are modulated so as to maintain orthogonality among the excited signals; multiple antennas are excited at the same time. This means just one FDTD simulation is needed whereas the conventional method demands as many simulations as there are transmitting antennas. The simulation of a 2×2 multi-antenna system shows that the proposed method matches the performance of the conventional method even though its computation time is much shorter.