Capacity of the broadband dual-orthogonal polarized MIMO Land Mobile Satellite (LMS) channel: Channel modeling and influenced factors analysis |
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| Affiliation: | 1. College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing, China;2. School of Information and Communication Engineering, Dalian University of Technology, Dalian, China;1. Budapest University of Technology and Economics, Budapest, 1117 Magyar tudósok krt. 2., Hungary;2. The New Horizons Institute of Technology, Durgapur-8 (W.B), India;1. National Research Center of Railway Safety Assessment, Beijing Jiaotong University, Beijing 100044, China;2. State Key Lab of Rail Traffic Control & Safety, Beijing Jiaotong University, Beijing 100044, China;1. Institute of Space Electronics and Information Technology, School of Electronic Science and Engineering, National University of Defense Technology, China;2. Department of Signal Processing and Acoustics, Aalto University, Finland;3. China Academy of Electronics and Information Technology, China Electronics Technology Group Corporation, China |
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| Abstract: | Generally, the channel capacity of a MIMO system is closely related to its Channel Characteristic Matrix (CCM). In most current studies, the CCMs are formed by an independent identical distribution (i.i.d) model with Rayleigh or Rice distribution and nevertheless incomplete and inaccurate to describe a Broadband Dual-orthogonal Polarized MIMO Land Mobile Satellite (BDM-LMS) channel. In this paper, we build up the BDM-LMS channel model combining a 4-states broadband LMS channel model, time selective fading features, Channel Covariance Information (CCI) model and polarization correlation between antennas. Modeling steps of the channel model are introduced. The main emphasis is placed on the effects of the factors on the channel capacity in BDM-LMS system, such as antenna numbers, temporal correlations, terminal environments, elevation angles and polarization correlations between the DPAs. We provide simulation results to illustrate the effects of these factors through comparisons of the transmit rate, Ergodic Capacity and Outage Capacity. Moreover, the MIMO outage capacity advantages, indicating the benefits of MIMO compared with SISO systems under the same channel condition, are also studied under i.i.d and BDM-LMS channel. |
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| Keywords: | Multiple Input Multiple Output (MIMO) Land Mobile Satellite (LMS) channel Ergodic capacity (EC) |
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