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arXiv 2108.00712eess.SPcs.ITmath.IT
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局部分集和超可靠天线阵列

Local Diversity and Ultra-Reliable Antenna Arrays

Jens Abraham, Torbjörn Ekman

摘要:

超可靠的低延迟通信为移动无线电网络提供了新的用例。超可靠性(UR)机制涵盖在严格的延迟要求下获得的$10^{-9}$和$10^{-5}$之间的中断概率。由于中断事件的罕见性质,难以表征UR相关统计数据,但多样性定义了小规模衰落分布的下尾的渐近行为。大规模天线系统中的UR相关区域的行为与尾部不同。在一定中断概率下的广义局部分集清楚地表明了这种差异。对于四个以上的独立天线元件,经典的分集高估和低估的累积密度函数的斜率弱和强的确定性信道分量,分别。

英文摘要:

Ultra-reliable low-latency communication enables new use cases for mobile radio networks. The ultra-reliability (UR) regime covers outage probabilities between $10^{-9}$ and $10^{-5}$, obtained under stringent latency requirements. Characterisation of the UR-relevant statistics is difficult due to the rare nature of outage events, but diversity defines the asymptotic behaviour of the small-scale fading distributions' lower tail. The UR-relevant regime in large-scale antenna systems behaves differently from the tail. The generalising local diversity at a certain outage probability shows this difference clearly. For more than four independent antenna elements, the classic diversity overestimates and underestimates the slope of the cumulative density function for weak and strong deterministic channel components, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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