Wireless Backhaul Based on IEEE 802.11ac With Smart Beamforming

Oh, Young-Seok; Cho, Sungmin; Yu, Heejung

doi:10.1109/jsyst.2019.2898883

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…In [16], a distributed smart antenna system is designed for suppressing the interference and improving the system throughput. In [17], smart wireless backhaul containing a smart antenna is proposed for selecting the best beam direction and maximizing the throughput performance.…”

Section: Introductionmentioning

confidence: 99%

An Image-Aware Based Smart Antenna Capable of Automatic Beam Switching for Indoor Mobile Communication

Tian

Wang

et al. 2020

IEEE Access

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In this paper, a smart antenna array based on the image-aware technique that can automatically switch its beam to track users is proposed. Mobilenet, a deep neural network (DNN), is utilized to find the users' position information from images; it is trained using the collected dataset, and the parameters are optimized. The modified DNN is then implanted into a miniaturized embedded system RK3399. To obtain beam switchable radiation, a 2×2 microstrip patch antenna array with a 4×4 Butler feeding matrix is designed in the 2.4 GHz ISM band. Then, the RK3399 is compactly integrated with the patch antenna array, and a microcamera is used as the eye of the antenna to capture the environment information. A series of measurements of the received power and error vector magnitude (EVM) are performed in a real indoor scenario to verify the design. The results agree well with the expected results and show that the design is capable of guaranteeing communication quality and improving energy efficiency, making this technique a good candidate for indoor wireless applications. INDEX TERMS Automatic beam switching, butler matrix, deep neural network, error vector magnitude, smart antenna.

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Section: Introductionmentioning

confidence: 99%

An Image-Aware Based Smart Antenna Capable of Automatic Beam Switching for Indoor Mobile Communication

Tian

Wang

et al. 2020

IEEE Access

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“…Beamforming technology is a general-purpose signal processing technology commonly used in radar [15] and Wifi signal enhancement [16] applications. For the first time, Mclaskey et al [17] applied beamforming methods to sound source localization.…”

Section: Introductionmentioning

confidence: 99%

Research on continuous leakage location of stiffened structure based on frequency energy ratio mapping method

Zhang¹,

Yue²,

Qi³

et al. 2020

J. Phys. D: Appl. Phys.

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The stiffened structure has a complex effect on signal propagation and poses difficulties in leakage location technology. In order to solve this problem, this paper proposes a frequency energy ratio mapping method (FERMM). The method divides the grid on the structure in advance, compares the signal of the distributed sensor with the reference signal to generate a mapping matrix frome the energy ratio vector. When a leak at an unknown location occurs, the energy ratio vector is formed by the same method and matched with the mapping matrix to locate the unknown leakage. The energy ratio vector of this method are only related to the propagation path and are independent of the spectral characteristics of the leakage and the frequency response characteristics of the receiving sensor. FERMM has the adaptability to complex structures and can locate continuous signals for a fast real-time process. The FERMM was verified by 120 sets of experiments. The results show that the average positioning error of FERMM is 25.5 mm, which can reach 14.4 mm error under the optimal setting of grid coincidence.

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Research on continuous ultrasonic source localization of composite structures by frequency domain characteristics indexing

Zhang

Rui

et al. 2022

Measurement

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Wireless Backhaul Based on IEEE 802.11ac With Smart Beamforming

Cited by 4 publications

References 16 publications

An Image-Aware Based Smart Antenna Capable of Automatic Beam Switching for Indoor Mobile Communication

An Image-Aware Based Smart Antenna Capable of Automatic Beam Switching for Indoor Mobile Communication

Research on continuous leakage location of stiffened structure based on frequency energy ratio mapping method

Research on continuous ultrasonic source localization of composite structures by frequency domain characteristics indexing

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