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Matrix-based FDTD parallel algorithm for big areas and its applications to high-speed wireless communications

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3 Author(s)
G. Rodriguez ; Dept. of Inf. & Comput. Sci., Toyohashi Univ. of Technol., Japan ; Y. Miyazaki ; N. Goto

A formulation of the finite-difference time-domain (FDTD) equations as a system of linear equations in matricial form is used to develop a novel parallel algorithm that solves the variables of a 2-D FDTD simulation using less memory than required by the common FDTD algorithm, at the cost of some increase in the number of operations. For the sake of speeding-up the simulation of urban channels for personal wireless communications, the geometry of those channels and its relation with a numerical Green's function is used to increase the speed of this algorithm. Simulations are carried out in order to propose a FDTD-based model of urban microcells and their delay profiles, and some comparisons against uniform theory of diffraction based models are discussed. Finally, propagation of time division multiple access and code division multiple access signals of high bit rate in those channels are simulated, and the results allows us to evaluate the effect of multipath interference in high speed wireless communications

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:54 ,  Issue: 3 )