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A three-dimensional reference model for wideband multiple-input multiple-output (MIMO) mobile-to-mobile (M-to-M) channels is reviewed. To validate the reference model, an experimental MIMO M-to-M channel-sounding campaign was conducted for M-to-M vehicular communication with vehicles travelling along surface streets of a metropolitan area. The measured data is processed and the first- and second-order...
We investigate the channel properties of a dual-polarized MIMO implementation in a mobile-to-mobile line-of-sight (LOS) channel and characterize the channel's input/output cross-polarization discrimination (IOXPD) behavior. From experimental data involving transmissions with 14 MHz bandwidths, we find that the IOXPD is frequency selective and exhibits statistical decorrelation properties in both time...
We propose an efficient algorithm using 3D morphological filtering for rejecting clutters in ultrasound color flow images. It consists of mask generation, preprocessing, and 3D morphological filtering. In the filtering, 2D binary opening is performed in spatial domain, which is followed by 2D binary opening in lateral-temporal domain. The shape and size of a structuring element for 2D opening are...
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