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FUZZY WEIGHT CONTROLLER BASED CELL-SITE DIVERSITY FOR RAIN FADING MITIGATION IN LMDS NETWORKS IN THE TROPICS

By T. Sabapathy, S. W. Tan, and T. C. Chuah

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Abstract:
Local multipoint distribution service (LMDS) is a broadband wireless access technology that operates at microwave frequencies above 25 GHz. However, severe attenuation due to excessive rain in tropical regions presents a major challenge for achieving reliable communication over such frequencies. To overcome this problem, cell-site diversity (CSD) can be deployed in cellular-type LMDS networks. In this paper, we address the problem of reliable communication for LMDS networks in heavy rain regions by proposing a fuzzy weight controller based cell-site diversity (FWC-CSD) scheme. Rain cells are randomly simulated in an LMDS network to analyze the system performance using the proposed FWC-CSD scheme. Simulation results show that the proposed scheme yields improved performance in terms of average outage probability and throughput while maintaining the overall quality of service.

Citation:
T. Sabapathy, S. W. Tan, and T. C. Chuah, "Fuzzy Weight Controller Based Cell-Site Diversity for Rain Fading Mitigation in Lmds Networks in the Tropics," Progress In Electromagnetics Research B, Vol. 28, 235-251, 2011.
doi:10.2528/PIERB10121004

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