Domain Decomposition CN-FDTD with Unsplit-Field PML for Time-Reversed Channel Analysis

X. K. Wei, W. Shao, X. H, Wang, B.-Z. Wang
2018 Radioengineering  
In this paper, an efficient domain decomposition (DD) technique is introduced into the implicit Crank-Nicolson finite-difference time-domain (CN-FDTD) method to analyze the channel characteristics of time reversal (TR) waves. As an unconditionally stable time-marching method, DD-CN-FDTD is suitable to solve the multiscale problem involving special microstructures in a sub-wavelength array. The standard unsplit-field perfectly matched layer, which is implemented with auxiliary differential
more » ... differential equations, is derived here to truncate the computational domain of a multipath indoor environment. Furthermore, each sub-matrix is preconditioned by the reverse Cuthill-Mckee scheme for easier lower-upper decomposition. Numerical results of TR wave propagation demonstrate the performance of the proposed method. . His current research interests are in the areas of computational electromagnetics, antenna theory and technique, and electromagnetic compatibility analysis.
doi:10.13164/re.2018.0469 fatcat:elrxkkaanbcwvhy3xzmywi2dbm