Improving Performance of Distributed Collaborative Beamforming in Mobile Wireless Sensor Networks: A Multiobjective Optimization Method

Sun, Geng; Zhao, Xiaohui; Shen, Guojun; Liu, Yanheng; Jayaprakasam, Suhanya; Zhang, Ying; Leung, Victor C. M.

doi:10.1109/jiot.2020.2983519

Cited by 29 publications

(12 citation statements)

References 50 publications

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“…GA is a search algorithm based on the process of natural selection and natural genetics [21,33,34]. To name a few, many works have employed GA in beamforming applications such as in pattern synthesis [35], array thinning [36], beam and null steering [37], multiobjective optimization [38], and element failure correction ability [39].…”

Section: Genetic Algorithmmentioning

confidence: 99%

Analysis, Optimization, and Hardware Implementation of Dipole Antenna Array for Wireless Applications

Malek

Seager

Flint

et al. 2022

International Journal of Antennas and Propagation

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The antenna pattern synthesis is one of the significant problems in the phased array antenna. Pattern synthesis refers to the optimized weight excitation of each antenna element in order to steer the beam electronically without mechanically rotating the antenna. It can be achieved by using a combination of phase shifters and attenuator circuits. In this paper, a 2 by 2 dipole antennas with an RF beamforming circuit has been designed to steer the main beam along the azimuth plane. The main beam coverage from 100° to 140° with a step size of 10° has been successfully optimized using a hybrid of the induced EMF method and a genetic algorithm. The optimization results were compared to the full-wave simulation technique implemented in Empire XCCel. The design is realistically implemented at 2.45 GHz, with both simulation and measurement results shown. The measured reflection coefficient of the phased array antenna is −48 dB at 2.56 GHz. The feasibility of the beam synthesis has been validated successfully with the main beam being steered at 110°. The possibility of a fabrication discrepancy resulting in minor radiation degradation is also discussed in this research. The dipole antenna system with RF beamformer circuit can be applied to indoor positioning systems such as Wi-Fi, wireless local area network (WLAN), and fifth-generation.

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Section: Genetic Algorithmmentioning

confidence: 99%

Analysis, Optimization, and Hardware Implementation of Dipole Antenna Array for Wireless Applications

Malek

Seager

Flint

et al. 2022

International Journal of Antennas and Propagation

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“…The scheme utilizes a hybrid meta-heuristic optimization algorithm: Particle Swarm Optimization and Gravitational Search Algorithm-Explore (PSOGSA-E) to optimize node transmit weights. In [18] , sidelobe minimization in CB through node position perturbation is proposed. The authors propose a multi-objective optimization approach aimed at concurrently optimizing peak sidelobe level, node transmit power and node motion energy.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a multiple collaborative beamforming scheme in the realm of Wireless Sensor Networks featuring 3-dimension node configuration

Maina

Langat

Kihato

2022

Heliyon

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“…Research towards peak sidelobe suppression in CB is active. A case in point is the work presented in [3,4] wherein a scheme towards sidelobe suppression through node location perturbation is presented. Although substantially good results are obtained, the proposed methods rely significantly on node mobility.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Versatile Undesired Radiation Suppression Scheme in the Domain of Collaborative Beamforming

Macharia¹,

Langat²,

Kihato³

2022

PIER C

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A typical outcome of Collaborative Beamforming (CB) in Wireless Sensor Networks (WSNs) is the presence of relatively high radiation in undesired directions, an aspect attributed to the usual random arrangement of collaborating sensor nodes. High radiation in undesired directions and prominent sidelobes are bound to result in interference in adjacent co-channel networks. Research towards suppression of radiation in undesired directions in CB is active with a number of proposals already in place. Most of the proposals are in the domain/perspective of 2-dimension WSN configuration with a focus on suppressing the highest-leveled (peak) sidelobe only. Commonly, peak sidelobe suppression is achieved through nodes' transmission amplitude perturbation after a conventional phase steering based beamsteering procedure. In this paper, concurrent amplitude and phase perturbation at collaborating nodes has been utilized towards achieving concurrent beamsteering and suppression of radiation in an elaborate set of undesired directions. A variant of the Particle Swarm Optimization (PSO) algorithm has been applied in the node transmit amplitude and phase perturbation process. Selection of radiation suppression directions is done uniformly from the set of all possible undesired radiation directions. A WSN featuring planar node arrangement with the sink at an elevated plane has been used as the analysis platform. The proposed scheme outperforms the peak sidelobe suppression approach in terms of observed radiation in undesired directions and average sidelobe levels. It has also been established that increasing the number of collaborating nodes and/or the number of selected undesired radiation directions in the proposed CB scheme leads to undesired radiation performance improvement although at an exponentially decaying rate.

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Improving Performance of Distributed Collaborative Beamforming in Mobile Wireless Sensor Networks: A Multiobjective Optimization Method

Cited by 29 publications

References 50 publications

Analysis, Optimization, and Hardware Implementation of Dipole Antenna Array for Wireless Applications

Analysis, Optimization, and Hardware Implementation of Dipole Antenna Array for Wireless Applications

Design and analysis of a multiple collaborative beamforming scheme in the realm of Wireless Sensor Networks featuring 3-dimension node configuration

Design and Analysis of a Versatile Undesired Radiation Suppression Scheme in the Domain of Collaborative Beamforming

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