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An adaptive geometry-based stochastic model for non-isotropic MIMO mobile-to-mobile channels.

Cheng, Xiang and Wang, Cheng-Xiang and Laurenson, David and Salous, Sana and Vasilakos, Anthanasios (2009) 'An adaptive geometry-based stochastic model for non-isotropic MIMO mobile-to-mobile channels.', IEEE transactions on wireless communications., 8 (9). pp. 4824-4835.


In this paper, a generic and adaptive geometrybased stochastic model (GBSM) is proposed for non-isotropic multiple-inputmultiple-output (MIMO) mobile-to-mobile (M2M) Ricean fading channels. The proposed model employs a combined two-ring model and ellipse model, where the received signal is constructed as a sum of the line-of-sight, single-, and doublebounced rays with different energies. This makes the model sufficiently generic and adaptable to a variety of M2M scenarios (macro-, micro-, and pico-cells). More importantly, our model is the first GBSM that has the ability to study the impact of the vehicular traffic density on channel characteristics. From the proposed model, the space-time-frequency correlation function and the corresponding space-Doppler-frequency power spectral density (PSD) of any two sub-channels are derived for a non-isotropic scattering environment. Based on the detailed investigation of correlations and PSDs, some interesting observations and useful conclusions are obtained. These observations and conclusions can be considered as a guidance for setting important parameters of our model appropriately and building up more purposeful measurement campaigns in the future. Finally, close agreement is achieved between the theoretical results and measured data, demonstrating the utility of the proposed model.

Item Type:Article
Keywords:Mobile-to-mobile channels, MIMO, Nonisotropic.
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Publisher statement:© 2009 IEEE. Personal use of this material is permitted. However permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Record Created:14 Oct 2009 08:50
Last Modified:08 May 2015 10:14

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