[01] Oluyomi Aboderin, Department of Engineering and Space Systems, National Space Research and Development Agency (NASRDA), Abuja, Nigeria. [02] Isiaka A. Alimi, Department of Electrical and Electronics Engineering, School of Engineering and Engineering Technology, Federal University of Technology, Akure, Nigeria.

Land mobile satellite (LMS) is an important aspect of satellite communication to everyone across the globe due to the services available through it. To this effect, modeling the channel in this services is also very important, so as to ensure availability, quality of service (QoS), and reduce outages on the channel, which in turn will results into value for money, safety of lives and properties, and even reduce cost both from the operator’s point of view and user’s point of view. In this work, a Lutz two-state statistical model was used to model the behavior of a complete channel in two different transmission environments namely: shadowing and un-shadowing or line-of-sight (LOS) and non-line-sight (NLOS) conditions. However due to the influence of the propagation environment on the LMS signals, there were outages (fading) along the 200meters length of the measurement campaign. To reduce these outages, satellite diversity technique was employed. This technique pair together two satellites having the same masking angle and both simultaneously linked with the mobile terminal. The results show that connectivity to the two satellites improved the satellites availability to the mobile terminal up to 90%, and the service quality also was improved.

Land Mobile Satellite (LMS), Channel, Lutz Two-State Statistical Model, Shadowing, Unshadowing, Line-of-Sight (LOS), Non-Line-of-Sight (NLOS), Mobile Terminal

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