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In this paper, we propose a new interference alignment (IA) scheme designing jointly the linear transmitter and receiver for the 2 user MIMO X channel system, using minimum total mean square error criterion, subject to each transmitter power constraint. Considering the channel estimation errors, we further propose a robust design for the IA. Iterative method is used to obtain the optimal solutions...
Through the research of the parallel computational model based on the principal and subordinate mode and the basic theory of GMRES algorithm in Krylov subspace, this essay raises a new parallel PCGMRES algorithm which possesses PC pattern, and shows the computing examples for linear equations. After the comparison with the result from the parallel GMRES (m) algorithm, it shows that this designed parallel...
A modified algorithm of perfectly matched layer (PML) is proposed in finite difference time domain (FDTD) for handling dispersive media and composite objects. This algorithm obtains the iterative equations from frequency domain by Z-transform, by which we can also treat dispersive media in Maxwell's equations. Some numerical examples are given to validate the method.
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