PRECODING IN MULTIBEAM SATELLITE COMM UNICATIONS: PRESENT AND FUTURE CHALLENGES
PRECODING IN MULTIBEAM SATELLITE COMM UNICATIONS: PRESENT AND FUTURE CHALLENGES
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DOI：
10.1109/mwc.2016.1500047wc
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发表时间：
2016-12-01
影响因子：
12.9
通讯作者：
Taricco, Giorgio
中科院分区：
文献类型：
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作者：
Angel Vazquez, Miguel;Perez-Neira, Ana;Taricco, Giorgio
每当多波束卫星系统在其覆盖区域内以非常积极的频率复用为目标时，波束间干扰就成为增加系统总吞吐量的主要障碍。事实上，位于波束边缘处的用户即使对于适度积极的重用-2规划也遭受非常大的干扰。虽然已经在卫星终端处研究了波束间干扰管理的解决方案，但事实证明，性能改善并不能证明增加的终端复杂性和成本是合理的。在本文中，我们关注在发射机处发生的干扰减轻技术（即，网关）。基于这种理解，我们提供了我们的愿景先进的预编码技术和用户聚类方法的多波束宽带固定卫星通信。我们还讨论了部署预编码方案的实际挑战以及最近发布的DVB-S2 X标准中引入的支持。还提供了采用预编码的新颖配置的未来挑战。
Whenever multibeam satellite systems target very aggressive frequency reuse in their coverage area, inter-beam interference becomes the major obstacle for increasing the overall system throughput. As a matter of fact, users located at the beam edges suffer from very large interference for even a moderately aggressive planning of reuse-2. Although solutions for inter-beam interference management have been investigated at the satellite terminal, it turns out that the performance improvement does not justify the increased terminal complexity and cost. In this article, we pay attention to interference mitigation techniques that take place at the transmitter (i.e., the gateway). Based on this understanding, we provide our vision on advanced precoding techniques and user clustering methods for multibeam broadband fixed satellite communications. We also discuss practical challenges to deploy precoding schemes and the support introduced in the recently published DVB-S2X standard. Future challenges for novel configurations employing precoding are also provided.