Beam Alignment for mmWave Using Non-Stationary Bandits
Beam Alignment for mmWave Using Non-Stationary Bandits
复制标题
使用非静止强盗进行毫米波光束对准
DOI：
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复制
发表时间：
2020
期刊：
影响因子：
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通讯作者：
A. Sah
中科院分区：
文献类型：
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作者：
Ruchir Gupta;K. Lakshmanan;A. Sah
在毫米波（mmWave）频带中通信的无线系统遭受严重的传播损耗，并且因此采用高度定向的波束来减轻传播损耗的影响。然而，这种波束需要在发射器和接收器之间对准，以进行任何可靠的通信。在文献中，这个问题已经被建模为一个多臂强盗。现有的大多数解决方案都使用固定的强盗算法，这适合于时不变的信道，而无线信道是时变的性质。因此，我们提出了两种基于非平稳多臂Bandit的波束对准BA算法，专门针对时变信道设计。这些算法在发射机和接收机之间执行需要最小反馈的分布式BA。使用模拟，我们已经表明，建议BA算法最大限度地减少中断概率和遗憾的指数权重算法相比。
A wireless system communicating in the millimeter-wave (mmWave) band suffers from severe propagation loss and thus, employs a highly directional beam to mitigate the effect of propagation losses. However, such beams need to be aligned between the transmitter and receiver for any reliable communication to occur. In literature, this problem has been modeled as a multi-armed bandit. Most of the existing solutions for this problem use stationary bandit algorithms, which suit for time-invariant channels, whereas wireless channels are time-variant in nature. Thus, we propose two non-stationary multi-armed bandit based beam alignment BA algorithms, especially designed for time-varying channels. These algorithms perform a distributed BA between the transmitter and the receiver requiring minimal feedback. Using simulations, we have shown that the proposed BA algorithms minimize the outage probabilities and the regret compared to those of the exponential-weights algorithm.
影响因子：
3.9
作者：
Vutha Va;Takayuki Shimizu;G. Bansal;R. Heath
通讯作者：
Vutha Va;Takayuki Shimizu;G. Bansal;R. Heath