Extreme crowding of electromagnetic spectrum in recent years has led to the challenges in designing sensing and communications systems. Both systems require a broad range of bandwidth, thus resulting in competing interests in exploiting the spectrum. Efficient spectrum and hardware utilization have led to the emergence of integrated sensing and communications (ISAC) systems, which have recently emerged as a candidate 6G technology. In particular, we provide potential techniques, namely the opportunistic ISAC and optimized ISAC. Rate-splitting multiple access (RSMA) is highlighted as an optimized ISAC technique for LEO-ISAC systems due to its effectiveness in simultaneously managing interference and enabling better communication-sensing trade-off performance.

中文翻译：

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集成传感和通信支持的近地轨道卫星系统


近年来电磁频谱的极度拥挤给传感和通信系统的设计带来了挑战。这两种系统都需要广泛的带宽，从而导致在利用频谱方面存在利益竞争。高效的频谱和硬件利用催生了集成传感和通信 (ISAC) 系统的出现，该系统最近已成为 6G 候选技术。特别是，我们提供了潜在的技术，即机会主义 ISAC 和优化 ISAC。速率分割多址 (RSMA) 因其在同时管理干扰和实现更好的通信感知权衡性能方面的有效性而被强调为 LEO-ISAC 系统的优化 ISAC 技术。