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Reevaluating cell wraparound techniques for 3D channel model based system-level simulations

机译:重新评估基于3D通道模型的系统级仿真的单元环绕技术

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Current wireless system-level simulation frameworks utilize cell wraparound in order to reduce boundary effects and provide an accurate evaluation of system performance. The current wraparound technique is purely distance based, where UEs always pick the closest cells, ignoring the radio propagation characteristics of the channel. While this wraparound methodology works well for a 2D channel model, it fails to account for the enhancements and spatial characteristics of the 3D channel model. In this paper we investigate the use of a radio distance based wraparound scheme for 3D channel models. This new wraparound methodology uses received downlink signal power to perform wraparound cell selection, allowing it to account for the radio propagation characteristics of the 3D channel model. We compare the performance of these two wraparound techniques with respect to coupling gain and other key metrics when considering a 3D channel model. Our results demonstrate the differences between the two schemes and highlight the improved accuracy offered by the radio distance based wraparound scheme.
机译:当前的无线系统级仿真框架利用单元环绕技术来减少边界效应并提供对系统性能的准确评估。当前的环绕技术完全基于距离,其中UE总是选择最近的小区,而忽略了信道的无线电传播特性。尽管此环绕方法在2D通道模型中效果很好,但无法说明3D通道模型的增强和空间特征。在本文中,我们研究了基于无线电距离的环绕方案在3D通道模型中的使用。这种新的环绕式方法使用接收到的下行链路信号功率来执行环绕式小区选择,从而使其能够考虑3D信道模型的无线电传播特性。在考虑3D通道模型时,我们比较了这两种环绕技术在耦合增益和其他关键指标方面的性能。我们的结果证明了这两种方案之间的差异,并强调了基于无线电距离的环绕方案所提供的更高的准确性。

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