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6G智能超表面技术应用与挑战 被引量:19
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作者 赵亚军 菅梦楠 《无线电通信技术》 2021年第6期679-691,共13页
智能超表面(Reconfigurable Intelligent Surface,RIS)因为其能够灵活操控信道环境中的电磁特性,在学术研究及产业推进上发展迅速,被认为是5G⁃Advanced和6G网络的关键候选技术之一。RIS通过其人为灵活异常调控无线电波传输的能力,有机... 智能超表面(Reconfigurable Intelligent Surface,RIS)因为其能够灵活操控信道环境中的电磁特性,在学术研究及产业推进上发展迅速,被认为是5G⁃Advanced和6G网络的关键候选技术之一。RIS通过其人为灵活异常调控无线电波传输的能力,有机会构建一个智能的无线电磁环境。RIS的引入可能构建全新的网络范式,在给未来网络带来全新可能的同时,也导致了诸多全新的技术及工程应用挑战。该综述首先从新的角度介绍了RIS使能未来无线通信网络的主要方面,然后重点对RIS引入后面临的关键挑战进行了探讨。归纳汇总了RIS网络面临的主要工程化应用技术挑战,并对其中信道降秩、网络间共存、网络内共存、网络部署等几方面的关键技术挑战进行了深入分析和探讨,提出可能的解决方案。 展开更多
关键词 6G 智能超表面 信道降秩 多网络共存 多用户复用 多小区共存 网络部署
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COEXISTENCE OF PRIMARY USERS AND SECONDARY USERS UNDER INTERFERENCE TEMPERATURE AND SINR LIMIT
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作者 Wu Yingxiao Yang Zhen 《Journal of Electronics(China)》 2009年第3期303-311,共9页
Spectrum sharing offers the opportunity for promising efficiency gains, and it will be a valuable tool in the era of future radios.To address this issue, we develop a multi-user cognitive radio sharing network based o... Spectrum sharing offers the opportunity for promising efficiency gains, and it will be a valuable tool in the era of future radios.To address this issue, we develop a multi-user cognitive radio sharing network based on opportunistic spectrum access and propose a new spectrum sharing strategy.The objective of our interest is to obtain the number of secondary users who can coexist peacefully with primary users to improve the utility of licensed spectrum, at the same time maximize the total goodput under the interference temperature and SINR constraints.Through analysis and simulation, the new strategy of spectrum sharing does improve the goodput performance as well as guarantee the Quality of Service(QoS) of primary and secondary users. 展开更多
关键词 Spectrum sharing COEXISTENCE Interference temperature limit SINR limit Opportunistic spectrum access
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