Spatial Correlation Characteristics Analysis of Multi-Beam Channels of Mobile Satellite System

• 作者: Jianjun Wu Xiang Fei Yuxin Cheng Ziming Su
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: SATELLITE MIMO SPATIAL Correlation MULTI-BEAM SCATTERERS CHANNEL Model
• 年，卷（期）: 2017,（5）
• 页码范围: 127-137
• 页数: 11页
• 分类号: TN92

摘要

Due to the influence of scatterers around the receiving antenna, the multipath signal in satellite mobile communication systems is correlated with each other which would influence the system performance. There is no systematic standard on the channel modelling of the wideband satellite channel at present, so the study of the modelling of the wideband satellite channel is of great importance. In this paper, firstly we created a multi-beam model which can figure out the antenna gain of the nth component beam. Secondly, we combined the characteristics of multi-beam satellite channel and the distribution of the scatterers, and set up a three-dimension random channel model. This model is more realistic for satellite communication system since it considers the height of scatterers. According to the channel models, we had the formula of spatial correlation coefficient. We used the formula to calculate the relationship between spatial correlation coefficient and the interval of antennas. The result shows that the spatial correlation exists and cannot be ignored while modeling for mobile satellite system.