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Shadowing-Based Antenna Selection for V2V Communications

机译:基于阴影的V2V通信的天线选择

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Antenna selection (AS) is considered as an ideal approach for improving the performance of vehicle-to-vehicle (V2V) communications, while satisfying the hardware and power limitations that exist in vehicles. However, the promised gain over single antenna schemes is affected by the fast varying wireless channel, since AS is frequently performed using outdated versions of the signal-to-noise ratio. In this paper, we propose an AS scheme that exploits the stationarity of large scale fading. In particular, by adopting shadowing information as an AS criterion, the negative consequences of the outdated channel state information (CSI) can be alleviated, since large-scale fading varies more slowly as compared to small-scale fading. The performance of the proposed technique is analyzed using the criterion of outage probability. It is shown that the new scheme outperforms the corresponding one that is based on outdated CSI, especially in scenarios with mild channel conditions, in terms of fading/shadowing severity. Moreover, empirical results have been used to verify the effectiveness of the considered shadowing model.
机译:天线选择(AS)被认为是提高车辆到车辆(V2V)通信性能的理想方法,同时满足车辆中存在的硬件和功率限制。然而,在单个天线方案上的应许出的增益受到快速变化的无线信道的影响,因为通常使用过时的信噪比来执行。在本文中,我们提出了一种作为利用大规模褪色的实质性的方案。特别地,通过采用作为标准的遮蔽信息,可以减轻过时的信道状态信息(CSI)的负面后果,因为与小规模衰落相比,大规模衰落变化更慢。使用中断概率的标准分析所提出的技术的性能。结果表明,在衰落/阴影严重程度方面,新方案优于基于过时的CSI的相应的CSI,特别是在具有轻度信道条件的情景中。此外,已经使用经验结果来验证所考虑的阴影模型的有效性。

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