Distributed Transmit Beamforming: Analyzing the Maximum Communication Range
Distributed Transmit Beamforming: Analyzing the Maximum Communication Range
复制标题
分布式发射波束成形：分析最大通信范围
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
D. Cabric
中科院分区：
文献类型：
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作者：
Samer S. Hanna;D. Cabric
分布式发射波束成形是一种调整来自协作无线电的信号以在目的无线电处相干联合收割机的技术。为了实现相干合并，无线电设备可以与目的地交换用于频率同步和信号相位调整的信标。在目的地，相干组合导致波束成形（BF）增益。BF增益可以通过抵消随着与目的地的距离而增加的路径损耗来扩展通信范围。虽然理想地，可以从BF增益中简单地计算最大范围，但实际上，BF增益取决于距离，因为在较大的距离处，交换的伪码的较低SNR导致较高的同步和相位估计误差，这又使BF增益降级。在本文中，考虑到BF增益退化的目的地领导的BF协议，我们计算的最大通信范围，以实现一个理想的后BF信噪比通过分析之间的关系BF前的SNR和BF增益。我们表明，增加前导码长度或增加目的地功率可以显着增加最大范围，而只是增加无线电的数量给范围扩展递减。
Distributed transmit beamforming is a technique that adjusts the signals from cooperating radios to combine coherently at a destination radio. To achieve coherent combining, the radios can exchange preambles with the destination for frequency synchronization and signal phase adjustment. At the destination, coherent combining leads to a beamforming (BF) gain. The BF gain can extend the communication range by countering the path loss that increases with the distance from the destination. While ideally the maximum range can be trivially calculated from the BF gain, in reality, the BF gain depends on the distance because, at a larger distance, lower SNR of the exchanged preambles causes higher synchronization and phase estimation errors, which in turn degrades the BF gain. In this paper, considering the BF gain degradation for a destination-led BF protocol, we calculate the maximum communication range to realize a desired post- BF SNR by analyzing the relation between the pre-BF SNR and the BF gain. We show that increasing the preamble lengths or increasing the destination power can significantly increase the maximum range while just increasing the number of radios gives diminishing range extension.
影响因子：
10.4
作者：
Samer S. Hanna;D. Cabric
通讯作者：
Samer S. Hanna;D. Cabric
基于可扩展、高精度测距的多节点开环分布式波束形成
影响因子：
4.3
作者：
Ellison, Sean M.;Mghabghab, Serge R.;Nanzer, Jeffrey A.
通讯作者：
Nanzer, Jeffrey A.