Interference mitigation using exclusion area between multi-beam satellite system and terrestrial system

2014 International Conference on Information and Communication Technology Convergence (ICTC) Pub Date : 2014-12-15 DOI:10.1109/ICTC.2014.6983256

D. Oh, D. Chang, Sooyoung Kim

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引用次数: 1

Abstract

In the frequency sharing situation between multi-beam satellite system and terrestrial radio system, the spectral efficiency would be enhanced by the frequency reuse scheme of two systems. However, the interference problem is also occurred since same frequency bands are used both the terrestrial radio system in a spot beam cell and the Earth stations in adjacent spot beams. Because the interference situation would be worse at the border area of the spot beam cell, the exclusion area concept is adopted to reduce the interference at the border area but it makes the degradation of the spectral efficiency by limiting the possible sub-bands used by the terrestrial radio system. This paper considers the optimum size of the exclusion area taking into account of both interference and spectral efficiency in the frequency sharing scenario. The study results show the variation of the interference and spectral efficiency with the widths of the exclusion area. The simulation is performed in the S band with the bandwidth of each sub-band is 5 MHz and frequency reuse factor, 7.

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利用多波束卫星系统与地面系统之间的隔离区减少干扰

在多波束卫星系统与地面无线电系统频率共享的情况下，采用两种系统的频率复用方案可以提高频谱效率。但是，由于点波束小区的地面无线电系统和相邻点波束的地面站使用相同的频带，也会产生干扰问题。由于点波束小区边界区域的干扰情况比较严重，采用排除区概念来减少边界区域的干扰，但由于限制了地面无线电系统可能使用的子频带，使得频谱效率下降。本文考虑了频率共享情况下干扰和频谱效率的最佳排除区大小。研究结果表明，干扰和光谱效率随排除区宽度的变化规律。仿真在S波段进行，每个子带带宽为5mhz，频率复用系数为7。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 International Conference on Information and Communication Technology Convergence (ICTC)

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