WiFED Mobile: WiFi Friendly Energy Delivery With Mobile Distributed Beamforming

Mohanti, Subhramoy; Bozkaya, Elif; Naderi, Majid; Canberk, Berk; Secinti, Gokhan; Chowdhury, Kaushik R.

doi:10.1109/tnet.2021.3061082

Cited by 12 publications

(3 citation statements)

References 24 publications

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“…e master controller controls the output state of each actuator through the algorithm comparison and the set value comparison. In addition, users can also monitor all environmental parameters of greenhouse in real time in the cloud platform management system through computer and mobile phone client, and remotely control the working status of each actuators (controlling greenhouse ventilation, lighting, irrigation, and heat preservation) [12]. When network failure occurs in the system, each actuator can be controlled in manual mode to meet the multi-mode intelligent management of greenhouse.…”

Section: Overall System Schemementioning

confidence: 99%

Exploration of Agricultural Economic Management Methods under Internet + Mode

Luo

2022

Mobile Information Systems

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In order to solve the problems that the production management of agricultural greenhouses consumes large human resources, low management efficiency, and the limitations of environmental monitoring, a visualized smart agriculture based on ZigBee and WiFi dual-protocol fusion Wireless Sensor Networks (WSNs) technology is proposed. A management system is proposed. The system takes STM32 as the main control core and builds a visual cloud computing platform based on the ESP8266WiFi module. The environmental parameters of the greenhouse are sent to the ZigBee terminal device through the serial port, and the user can remotely monitor the environmental parameters of the greenhouse in real time through the computer and mobile client, and control the working status of each actuator. The test results show that: (Transmission Control Protocol/Internet Protocol, TCP/IP) communication is not abnormal; under the control of the visual management system, when the system sends out control commands, the response time of each output terminal is basically between 1 and 2 s. The response of the output control unit has high sensitivity. Affected by the network delay, the fourth group of test data is larger, and in the case of network delay, the response sensitivity of each output terminal of the system decreases accordingly. Conclusion. The system has high accuracy of data collection, strong work reliability, can realize precise remote control, and has low cost, high stability, easy operation, and has certain promotion value.

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Section: Overall System Schemementioning

confidence: 99%

Exploration of Agricultural Economic Management Methods under Internet + Mode

Luo

2022

Mobile Information Systems

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“…DBF was demonstrated using explicit channel phase feedback in [3], [4], [7]. Other approaches used 1-bit feedback to iteratively adjust the phase [8]- [10]. Estimating the phase in a retrodirective manner relying on reciprocity was also proposed in [11].…”

Section: Introductionmentioning

confidence: 99%

Distributed Transmit Beamforming: Analyzing the Maximum Communication Range

Hanna¹,

Čabrić²

2022

Preprint

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Distributed transmit beamforming is a technique that adjusts the signals from cooperating radios to combine coherently at a destination radio. To achieve coherent combining, the radios can exchange preambles with the destination for frequency synchronization and signal phase adjustment. At the destination, coherent combining leads to a beamforming (BF) gain. The BF gain can extend the communication range by countering the path loss that increases with the distance from the destination. While ideally the maximum range can be trivially calculated from the BF gain, in reality, the BF gain depends on the distance because, at a larger distance, lower SNR of the exchanged preambles causes higher synchronization and phase estimation errors, which in turn degrades the BF gain. In this paper, considering the BF gain degradation for a destination-led BF protocol, we calculate the maximum communication range to realize a desired post-BF SNR by analyzing the relation between the pre-BF SNR and the BF gain. We show that increasing the preamble lengths or increasing the destination power can significantly increase the maximum range while just increasing the number of radios gives diminishing range extension.

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“…Одним из вариантов решения проблемы является развёртывание точки доступа Wi-Fi [5] на основе стандартов IEEE 802.11 [6]. Однако рабочий диапазон радиоволн (ELF и SLF [7]) не позволяет эффективно использовать технологию на сильно пересеченной местности на больших расстояниях.…”

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Decentralized Protocol for Organizing Sustainable Interaction between Subscribers in Networks with High Dynamics of Topology Changes

Ivutin,

Novikov,

Pestin

et al. 2024

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Emergency services often have to carry out rescue and liquidation operations in the absence of centralized communications. The inability to ensure stable communication between members of the rescue unit significantly reduces the quality of work. Moreover, in modern realities, stable communication means not only voice exchange, which can be provided by shortwave radio transmitters, but also intensive exchange of large volumes of traffic. The use of standard solutions based on standard network equipment (Wi-Fi, satellite communications, etc.) and existing algorithms for ensuring quality of service in the conditions under consideration does not allow quickly ensuring information exchange between heterogeneous subscribers. Moreover, operation in high-Hz bands can be very difficult in the presence of obstacles, which reduces the overall coverage area and the quality of data transmission. We propose a network layer routing protocol designed to organize decentralized communication in an emergency service department, where subscribers have different degrees of mobility and types of transmitted traffic. This protocol includes algorithms for connecting to the network, detecting optimal and alternative communication routes, and transmitting and balancing traffic along the found routes. The original route search algorithm analyzes the performance of communication channels and determines all possible paths for transmitting traffic between subscribers. Using the route evaluation function based on gradient boosting of decision trees, optimal and alternative communication routes are formed, and when transmitting data, traffic balancing is performed based on the received information. An experimental study of the proposed protocol showed an improvement in the speed of deployment and quality of service in scenarios with varying degrees of subscriber mobility.

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WiFED Mobile: WiFi Friendly Energy Delivery With Mobile Distributed Beamforming

Cited by 12 publications

References 24 publications

Exploration of Agricultural Economic Management Methods under Internet + Mode

Exploration of Agricultural Economic Management Methods under Internet + Mode

Distributed Transmit Beamforming: Analyzing the Maximum Communication Range

Decentralized Protocol for Organizing Sustainable Interaction between Subscribers in Networks with High Dynamics of Topology Changes

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