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 Polarimetric Kronecker Separability of Site-Specific Double-Directional Channel in an Urban Macrocellular Environment | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 715403 15 pages doi 2009 715403 Research Article Polarimetric Kronecker Separability of Site-Specific Double-Directional Channel in an Urban Macrocellular Environment Kriangsak Sivasondhivat 1 Jun-Ichi Takada 2 Ichirou Ida 3 and Yasuyuki Oishi3 1 Agilent Technologies Japan Ltd. Kobe-shi Hyogo 651-2241 Japan 2 Department of International Development Engineering IDE Graduate School of Science and Technology Tokyo Institute of Technology Tokyo 152-8550 Japan 3Fujitsu Ltd. Fujitsu Laboratory Yokosuka-shi 239-0847 Japan Correspondence should be addressed to Kriangsak Sivasondhivat Received 2 August 2008 Revised 22 November 2008 Accepted 7 January 2009 Recommended by Persefoni Kyritsi This paper focuses on the modeling of a double-directional power spectrum density PSD between the base station BS and mobile station MS based on the site-specific measurements in an urban macrocell in Tokyo. First the authors investigate the Kronecker separability of the joint polarimetric angular PSD between the BS and MS by using the ergodic mutual information. The general form of the sum of channel polarization pair-wise Kronecker product approximation is proposed to be used to model the joint polarimetric angular PSD between the BS and MS. Finally the double-directional PSD channel model is proposed and verified by comparing the cumulative distribution functions CDFs of the measured and modeled ergodic mutual information. Copyright 2009 Kriangsak Sivasondhivat et al. 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. 1. Introduction It has been shown that the use of multiple antennas at a base station BS and a mobile station MS called as multiple input multiple output MIMO .
