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arXiv 2205.03080eess.SP
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传感器网络中基于空中计算的相关数据聚合预编码器设计

Precoder Design for Correlated Data Aggregation via Over-the-Air Computation in Sensor Networks

Ayano Nakai-Kasai, Tadashi Wadayama

摘要:

空中计算(AirComp)通过同时处理计算和通信,使传感器网络中的高效无线数据聚合成为可能。本文提出了一种新的预编码器设计的AirComp,结合传感数据的统计特性,空间相关性和异构数据的相关性。所提出的预编码器的设计不需要迭代过程,因此可以以低计算成本实现。此外,该方法提供了感测数据的降维,以减少每个传感器的通信成本。我们评估所提出的方法在各种系统参数的性能。结果表明,所提出的方法的优越性,传统的非迭代方法的情况下,有大量的传感器和在聚合器的接收天线的数量小于在传感器的总发射天线。

英文摘要:

Over-the-air computation (AirComp) enables efficient wireless data aggregation in sensor networks by simultaneous processing of calculation and communication. This paper proposes a novel precoder design for AirComp that incorporates statistical properties of sensing data, spatial correlation and heterogeneous data correlation. The proposed design of the precoder requires no iterative processes so that it can be realized with low computational costs. Moreover, this method provides dimensionality reduction of sensing data to reduce communication costs per sensor. We evaluate performance of the proposed method in terms of various system parameters. The results show the superiority of the proposed method to conventional non-iterative methods in cases where there are a large number of sensors and where the number of receive antennas at the aggregator is less than that of the total transmit antennas at the sensors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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