Exploitation of Parasitic Smart Antennas in Wireless Sensor Networks

Viani, Federico; Lizzi, Léonardo; Donelli, Massimo; Pregnolato, Denis; Oliveri, Giacomo; Massa, Andrea

doi:10.1163/156939310791285227

Cited by 68 publications

(51 citation statements)

References 13 publications

(12 reference statements)

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“…The cost, size, and radiation characteristics of Spida are therefore comparable with the state of the art in directional antennas for low-power wireless [3,13,14] rendering our results of general applicability.…”

Section: Antenna Prototypementioning

confidence: 62%

“…Recently, researchers have designed several ESD and other types of directional antennas for WSNs [3][4][5][6]. Most measurements with these antennas, however, have only assessed the directionality of the antenna, showing that the received signal strength of nodes that are in the direction in which the antenna radiates its maximum power is indeed higher than that of nodes at other locations.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Understanding Link Dynamics in Wireless Sensor Networks with Dynamically Steerable Directional Antennas

Voigt

Mottola

Hewage

2013

Lecture Notes in Computer Science

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Abstract. By radiating the power in the direction of choice, electronicallyswitched directional (ESD) antennas can reduce network contention and avoid packet loss. There exists some ESD antennas for wireless sensor networks, but so far researchers have mainly evaluated their directionality. There are no studies regarding the link dynamics of ESD antennas, in particular not for indoor deployments and other scenarios where nodes are not necessarily in line of sight. Our long-term experiments confirm that previous findings that have demonstrated the dependence of angleof-arrival on channel frequency also hold for directional transmissions with ESD antennas. This is important for the design of protocols for wireless sensor networks with ESD antennas: the best antenna direction, i.e., the direction that leads to the highest packet reception rate and signal strength at the receiver, is not stable but varies over time and with the selected IEEE 802.15.4 channel. As this requires protocols to incorporate some form of adaptation, we present an intentionally simple and yet efficient mechanism for selecting the best antenna direction at run-time with an energy overhead below 2% compared to standard omni-directional transmissions.

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Section: Antenna Prototypementioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Understanding Link Dynamics in Wireless Sensor Networks with Dynamically Steerable Directional Antennas

Voigt

Mottola

Hewage

2013

Lecture Notes in Computer Science

View full text Add to dashboard Cite

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“…Also, taking advantage of the low-cost radiometer considered in the framework of this work [5,6], a network of radiometers can be considered to increase the monitored area [16]. Otherwise, it can be mounted aboard an unmanned aircraft vehicle (UAV) [17,18], although a permanent scan is not possible due to the maximum duration of each mission.…”

Section: Resultsmentioning

confidence: 99%

Microwave Radiometry Imaging for Forest Fire Detection: A Simulation Study

Bonafoni¹,

Alimenti²,

Angelucci³

et al. 2011

PIER

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Abstract-This paper deals with passive microwave imaging for fire detection by means of a single-channel ground-based radiometer. The simulation of images sensed in the presence of fire spots under different environmental and operative conditions will be presented. We will refer to a low-cost ground-based radiometer operating at 12.65 GHz. Scenarios where fires are un-visible and IR sensors are not useful with respect to a microwave imager will be investigated in deep, such as in the presence of vegetation canopy optically masking fire sources and smoke plumes in the early stage. These simulations will assess limits and capabilities of microwave imaging for the identification of little fires masked by forest areas.

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“…Therefore, a group of high-performance antennas are required at the receiver. The parasitic smart antennas and high sensitivity magnetic antennas proposed by [1] and [2] respectively are helpful for improving the performance. At the same time, an effective method of canceling interference noise is needed to improve the performance of TTE communication.…”

Section: Introductionmentioning

confidence: 99%

Application of an Improved GSC in Tte Communication With Antenna Array

Zhang¹,

Jiang²,

Li³

2018

PIER M

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Abstract-By analyzing the characteristics of the super low frequency (SLF) electromagnetic wave in through the earth (TTE) communication, an orthogonal array of magnetic antenna is proposed for receiving SLF signal, and a new robust adaptive beamformer is used to process the received signals. The proposed beamformer is a multi-input generalized sidelobe canceller (GSC) with a coefficient constrained adaptive blocking matrix and a filter based on minimum mean-square error (MMSE) criterion. It can reduce the leakage of the desired signal and enhance the capability of interference cancellation. The received signals of the main antennas and the reference antennas of the antenna array are input to the beamformer as desired signal and reference signal, respectively. Both simulated and experimental results show that the proposed beamformer can suppress the single-tone and phase modulation interference, whose frequency is close to the desired signal's frequency. The proposed beamformer has better effect and robustness on interference cancellation than the traditional GSC.

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Exploitation of Parasitic Smart Antennas in Wireless Sensor Networks

Cited by 68 publications

References 13 publications

Understanding Link Dynamics in Wireless Sensor Networks with Dynamically Steerable Directional Antennas

Understanding Link Dynamics in Wireless Sensor Networks with Dynamically Steerable Directional Antennas

Microwave Radiometry Imaging for Forest Fire Detection: A Simulation Study

Application of an Improved GSC in Tte Communication With Antenna Array

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