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Effect of Antenna Directivity on Angular Power Distribution at Mobile Terminal in Urban Macrocells: A Geometric Channel Modeling Approach

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Abstract

We present a geometric channel model to study the effect of antenna directivity on angular power distribution at the mobile terminal in urban macrocells. The methodology reviewed in this paper integrates the antenna effect into the model geometry, thereby facilitating a system-dependent channel characterization. As each device is limited in terms of measurement sensitivity, the effective scatterer distribution is essentially dependent on the antenna beam pattern. Subsequently, two heuristic rules are proposed to establish the underlying relationship between the model geometry and the corresponding wave-propagation processes. It is shown that the influence of directional antenna is twofold. First, it alters the spatial distribution of scatterers by providing a different sample space for the random field, and secondly, it distributes signal components into the angles-of-departure or collects them from the angles-of-arrival by weighted combination. Important channel parameters measured at the mobile terminal such as the angular power distribution, Doppler spectrum, and multipath shape factors are also investigated to further exemplify the usefulness of the proposed model.

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Authors and Affiliations

  1. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore

    Yifan Chen & Vimal K. Dubey

  2. School of Computer, Electronic and Information, Guangxi University, Guangxi, People’s Republic of China

    Zhenrong Zhang

Authors
  1. Yifan Chen
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  2. Zhenrong Zhang
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  3. Vimal K. Dubey
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Correspondence to Yifan Chen.

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Chen, Y., Zhang, Z. & Dubey, V.K. Effect of Antenna Directivity on Angular Power Distribution at Mobile Terminal in Urban Macrocells: A Geometric Channel Modeling Approach. Wireless Pers Commun 43, 389–409 (2007). https://doi.org/10.1007/s11277-006-9230-7

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  • DOI: https://doi.org/10.1007/s11277-006-9230-7

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