Physical Layer Service Integration in 5G: Potentials and Challenges
Physical Layer Service Integration in 5G: Potentials and Challenges
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5G 中的物理层服务集成：潜力与挑战
DOI：
10.1109/access.2018.2805728
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发表时间：
2017-07
期刊：
影响因子：
3.9
通讯作者：
Shaoqian Li
中科院分区：
文献类型：
--
作者：
Weidong Mei;Zhi Chen;Jun Fang;Shaoqian Li
高传输速率和安全通信已被确定为第五代无线系统需要有效解决的关键目标。在这种背景下，物理层安全的概念变得很有吸引力，因为它可以仅利用无线介质的特性来建立完美的安全性。尽管如此，为了进一步提高频谱效率，一种新兴的概念，称为物理层服务集成（PHY-SI），已被认为是一种有效的手段。其基本思想是将多种共存的业务，即组播/广播业务和保密业务，合并为一种综合业务，在发送端一次性传输。本文首先提供有关典型 PHY-SI 模型的教程。此外，我们提出了一些最先进的解决方案，以提高 PHY-SI 在某些重要通信场景中的整体性能。我们特别强调了从传统单服务通信中借用的几个概念（例如人工噪声、本征模传输）到 PHY-SI 场景的扩展。这些技术在设计可靠且稳健的 PHY-SI 方案方面已被证明是有效的。最后，确定了未来工作的几个潜在研究方向。
High transmission rate and secure communication have been identified as the key targets that need to be effectively addressed by fifth generation wireless systems. In this context, the concept of physical-layer security becomes attractive, as it can establish perfect security using only the characteristics of wireless medium. Nonetheless, to further increase the spectral efficiency, an emerging concept, termed physical-layer service integration (PHY-SI), has been recognized as an effective means. Its basic idea is to combine multiple coexisting services, i.e., multicast/broadcast service and confidential service, into one integral service for one-time transmission at the transmitter side. This article first provides a tutorial on typical PHY-SI models. Furthermore, we propose some state-of-the-art solutions to improve the overall performance of PHY-SI in certain important communication scenarios. In particular, we highlight the extension of several concepts borrowed from conventional single-service communications, such as artificial noise, eigenmode transmission, to the scenario of PHY-SI. These techniques are shown to be effective in the design of reliable and robust PHY-SI schemes. Finally, several potential research directions are identified for future work.
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DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
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通讯作者：
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