tailieunhanh - Báo cáo hóa học: " Research Article A Geometrical Three-Ring-Based Model for MIMO Mobile-to-Mobile Fading Channels in "

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Geometrical Three-Ring-Based Model for MIMO Mobile-to-Mobile Fading Channels in | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011 Article ID 892871 13 pages doi 2011 892871 Research Article A Geometrical Three-Ring-Based Model for MIMO Mobile-to-Mobile Fading Channels in Cooperative Networks Batool Talha and Matthias Patzold Faculty of Engineering and Science University ofAgder Servicebox 509 4898 Grimstad Norway Correspondence should be addressed to Batool Talha Received 2 June 2010 Revised 4 October 2010 Accepted 2 January 2011 Academic Editor Francesco Verde Copyright 2011 B. Talha and M. Patzold. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. This paper deals with the modeling and analysis of narrowband multiple-input multiple-output MIMO mobile-to-mobile M2M fading channels in relay-based cooperative networks. In the transmission links from the source mobile station to the destination mobile station via the mobile relay non-line-of-sight NLOS propagation conditions are taken into account. A stochastic narrowband MIMO M2M reference channel model is derived from the geometrical three-ring scattering model where it is assumed that an infinite number of local scatterers surround the source mobile station the mobile relay and the destination mobile station. The complex channel gains associated with the new reference channel model are derived and their temporal as well as spatial correlation properties are explored. General analytical solutions are obtained for the four-dimensional 4D space-time cross-correlation function CCF the three-dimensional 3D spatial CCF the two-dimensional 2D source relay destination correlation function CF and the temporal autocorrelation function ACF . Exact closed-form expressions for different CFs under isotropic as well as nonisotropic scattering conditions are provided in this .