In this work, a heterogeneous network, where both terrestrial‐ and multiple spot beam‐based geosynchronous satellite networks use the same sub‐channel, is investigated. Moreover, the satellite uses same sub‐channel to serve users across all spot beams. Apart from inter spot beam interference, satellite users also receive strong interfering signal from the terrestrial base station. The satellite receivers manage the inter system interference (ie, interference from terrestrial network) while the inter spot beam interference is mitigated through precoding at the gateway. To be specific, the following interference‐aware detectors are used to mitigate the inter system interference: successive interference canceller (SIC) and joint decoder (JD). The proposed decoders are shown to achieve better data rate and bit error rate (BER) than the interference ignorant decoder at moderate to strong interference levels. Although JD and SIC achieve same sum rate at moderate and strong interference levels, JD is shown to allow the terrestrial user achieve higher data rate than SIC.

中文翻译：

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使用多用户检测器分析异构卫星网络

在这项工作中，研究了一种异构网络，其中基于地面和多个点波束的地球同步卫星网络都使用相同的子信道。此外，卫星使用相同的子信道为所有点波束的用户提供服务。除了点波束间干扰外，卫星用户还从地面基站接收到强干扰信号。卫星接收机管理系统间干扰（即，来自地面网络的干扰），同时通过网关处的预编码来减轻点间波束干扰。具体而言，以下干扰感知检测器用于减轻系统间干扰：连续干扰消除器（SIC）和联合解码器（JD）。示出了所提出的解码器在中等到强干扰水平下比无视干扰的解码器具有更好的数据率和误码率（BER）。尽管JD和SIC在中等强度和强干扰水平下实现了相同的总速率，但显示JD可以使地面用户获得比SIC更高的数据速率。