论文标题
移动毫米波通信的强大自适应光束跟踪
Robust Adaptive Beam Tracking for Mobile Millimetre Wave Communications
论文作者
论文摘要
毫米波（MMWave）束跟踪是一项具有挑战性的任务，因为需要跟踪算法以提供一致的高精度，而轨道损失的可能性很小，开销却最小。为了满足这些要求，我们在本文中提出了一个新的模拟光束跟踪框架，即具有随机控制（ATSC）的自适应跟踪。在此框架下，光束方向更新是根据仅根据从当前数据梁扰动的两个光束方向进行的测量来进行的。 To achieve high tracking accuracy and reliability, we provide a systematic approach to jointly optimise the algorithm parameters. The complete framework includes a method for adapting the tracking rate together with a criterion for realignment (perceived loss of track). ATSC适应了与移动性级别相匹配的跟踪开销的数量，而不会引起频繁的轨道丢失，这是通过在代表性统计通道模型下进行的一系列实验以及通过射线追踪软件模拟的真实城市场景的大量实验的验证。特别是，数值结果表明，ATSC可以在复杂的城市场景中以72 km/小时行驶的车辆准确跟踪优势通道方向，其间接费用小于1 \％。
Millimetre wave (mmWave) beam tracking is a challenging task because tracking algorithms are required to provide consistent high accuracy with low probability of loss of track and minimal overhead. To meet these requirements, we propose in this paper a new analog beam tracking framework namely Adaptive Tracking with Stochastic Control (ATSC). Under this framework, beam direction updates are made using a novel mechanism based on measurements taken from only two beam directions perturbed from the current data beam. To achieve high tracking accuracy and reliability, we provide a systematic approach to jointly optimise the algorithm parameters. The complete framework includes a method for adapting the tracking rate together with a criterion for realignment (perceived loss of track). ATSC adapts the amount of tracking overhead that matches well to the mobility level, without incurring frequent loss of track, as verified by an extensive set of experiments under both representative statistical channel models as well as realistic urban scenarios simulated by ray-tracing software. In particular, numerical results show that ATSC can track dominant channel directions with high accuracy for vehicles moving at 72 km/hour in complicated urban scenarios, with an overhead of less than 1\%.
