Large-Scale Capacity Characterization of Smart-Antenna Equipped Mobile Ad-Hoc Network Nodes in an Urban Environment


Kapil R. Dandekar and Robert W. Heath Jr


Proc. of IEEE Milcom, Boston, MA, Oct . 13-16, 2003.


Abstract÷ Multiple-input, multiple-output (MIMO) wireless communication systems, making use of smart antenna arrays at both ends of the communications link, are of increased interest due to their high spectral efficiency and chancel capacity. Most modeling of mobile ad-hoc networking performance is performed at a higher layer that does not fully appreciate low-level channel propagation effects, which are particularly important in MIMO systems. In this paper, we use computational electromagnetic modeling techniques to study the capacity of urban battlefield mobile ad-hoc network nodes in which each node is equipped with a smart antenna array. This technique makes use of the Method of Moments (MoM) to consider near-field scattering and mutual coupling effects and Electromagnetic Ray Tracing (ERT) to model far-field propagation in a sitespecific environment specified by computer-aided design (CAD) model. We present large-scale capacity results, illustrating average mutual information, in an urban environment corresponding to Philadelphia, PA.

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