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Sensor network connectivity with multiple directional antennae of a given angular sum

Binay Bhattacharya, Yuzhuang Hu, Qiaosheng Shi, Evangelos Kranakis, Danny Krizanc
2009 2009 IEEE International Symposium on Parallel & Distributed Processing  
We investigate the problem of converting sets of sensors into strongly connected networks of sensors using multiple directional antennae.  ...  Each sensor uses a fixed number, say 1 ≤ k ≤ 5, of directional antennae modeled as a circular sector with a given spread (or angle) and range (or radius).  ...  A variant of this problem concerns sensors with multiple antennae each, i.e., each sensor has k antennae, for some given integer k.  ... 
doi:10.1109/ipdps.2009.5160982 dblp:conf/ipps/BhattacharyaHSKK09 fatcat:zwq4f5l2snbvzbdolo3ecdqmau

Maintaining Connectivity in Sensor Networks Using Directional Antennae [chapter]

Evangelos Kranakis, Danny Krizanc, Oscar Morales
2010 Monographs in Theoretical Computer Science  
Each sensor is equipped with a fixed number of directional antennae modeled as a circular sector with a given spread (or angle) and range (or radius).  ...  Construct a network with the sensors as the nodes and with directed edges (u, v) connecting sensors u and v if v lies within u's sector.  ...  Research supported in part by NSERC (Natural Sciences and Engineering Research Council of Canada), MITACS (Mathematics of Information Technology and Complex Systems) and CONACyT (Consejo Nacional de Ciencia  ... 
doi:10.1007/978-3-642-14849-1_3 dblp:series/eatcs/KranakisKP11 fatcat:rxtp555unrdmfms4m67i2jafau

Photonics Enabling Coherent MIMO Radar Networks

Filippo Scotti, Antonio Malacarne, Salvatore Maresca, Paolo Ghelfi, Giovanni Serafino, Antonella Bogoni
2020 2020 22nd International Conference on Transparent Optical Networks (ICTON)  
The potential of coherent MIMO radar networks enabled by photonics is introduced. The first coherent dualband 2×4 MIMO radar experiment is presented.  ...  commercial antennas with a gain of 12 dBi in the frequency range 6 -11 GHz.  ...  In a recent class of radar systems, named multiple-input multiple-output (MIMO) radar, a multitude of radar sensors operate in synergy, so that signals emitted by multiple transmitters are received by  ... 
doi:10.1109/icton51198.2020.9203179 fatcat:h3oqckxro5c6zburkq4x3vgn3y

Collaborative Localization in Wireless Sensor Networks via Pattern Recognition in Radio Irregularity Using Omnidirectional Antennas

Joe-Air Jiang, Cheng-Long Chuang, Tzu-Shiang Lin, Chia-Pang Chen, Chih-Hung Hung, Jiing-Yi Wang, Chang-Wang Liu, Tzu-Yun Lai
2010 Sensors  
In this study, we present an RSS-based cooperative localization method that estimates unknown coordinates of sensor nodes in a network.  ...  In addition, a cooperative localization scheme that incorporates estimations from multiple fixed reference nodes is presented to improve the accuracy of the localization.  ...  This work was financially supported in part by the President of National Taiwan University, the National Science Council of the Executive Yuan, and the Council of Agriculture of the Executive Yuan, Taiwan  ... 
doi:10.3390/s100100400 pmid:22315548 pmcid:PMC3270849 fatcat:fqycssxxvjhshehuak7imggyba

Topology Insensitive Location Determination Using Independent Estimates Through Semi-Directional Antennas

Chin-Lung Yang, S. Bagchi, W.J. Chappell
2006 IEEE Transactions on Antennas and Propagation  
We begin by demonstrating a method of using angular diversity through multiple semi-directional antennas in order to ascertain the location of a target.  ...  A method of determining the location of a target by using multiple compact semi-directional antennas is shown to give an independent estimate of location from each sensor mote in a network, each estimate  ...  ACKNOWLEDGMENT The authors wish to thank the National Science Foundation for the support of this research and Intel for providing the sensor motes.  ... 
doi:10.1109/tap.2006.884294 fatcat:ygfshxep25dwnglrfr2rdn54ty

Force-directed approaches to sensor localization

Alon Efrat, David Forrester, Anand Iyer, Stephen G. Kobourov, Cesim Erten, Ozan Kilic
2010 ACM transactions on sensor networks  
We consider the case where the sensor network reports range information and the case where in addition to the range, we also have angular information about the relative order of each sensor's neighbors  ...  We describe a new force-directed technique, based on a multi-scale dead-reckoning, that scales well for large networks, is resilient under range errors, and can reconstruct complex underlying regions.  ...  Sensors equipped with multiple antennas can provide angular information by reporting the relative order of their neighbors or an estimate on the angle between adjacent neighbors.  ... 
doi:10.1145/1807048.1807057 fatcat:c4ab6pbofvh45au6a7vvw5zp4e

Force-Directed Approaches to Sensor Localization

Alon Efrat, David Forrester, Anand Iyer, Stephen G. Kobourov, Cesim Erten
2006 2006 Proceedings of the Eighth Workshop on Algorithm Engineering and Experiments (ALENEX)  
We consider the case where the sensor network reports range information and the case where in addition to the range, we also have angular information about the relative order of each sensor's neighbors  ...  We describe a new force-directed technique, based on a multi-scale dead-reckoning, that scales well for large networks, is resilient under range errors, and can reconstruct complex underlying regions.  ...  Sensors equipped with multiple antennas can provide angular information by reporting the relative order of their neighbors or an estimate on the angle between adjacent neighbors.  ... 
doi:10.1137/1.9781611972863.11 dblp:conf/alenex/EfratFIKE06 fatcat:3a44ujxx7behzm5utvf6ojoe3a

Drive-By Localization of Roadside WiFi Networks

A. P. Subramanian, P. Deshpande, J. Gao, S. R. Das
2008 2008 Proceedings IEEE INFOCOM - The 27th Conference on Computer Communications  
magnitude compared with trilateration approaches using omnidirectional antennas, and by a factor of two relative to other known techniques using directional antennas. 1 We are assuming that having an  ...  We use a steerable beam directional antenna mounted on a moving vehicle to localize roadside WiFi access points (APs), located outdoors or inside buildings.  ...  Jie Gao would like to acknowledge the support of NSF CAREER Award CNS-0643687.  ... 
doi:10.1109/infocom.2007.122 fatcat:opyo5d5k5zamxk3zlcqa5orbvq

Drive-By Localization of Roadside WiFi Networks

A. P. Subramanian, P. Deshpande, J. Gao, S. R. Das
2008 IEEE INFOCOM 2008 - The 27th Conference on Computer Communications  
magnitude compared with trilateration approaches using omnidirectional antennas, and by a factor of two relative to other known techniques using directional antennas. 1 We are assuming that having an  ...  We use a steerable beam directional antenna mounted on a moving vehicle to localize roadside WiFi access points (APs), located outdoors or inside buildings.  ...  Jie Gao would like to acknowledge the support of NSF CAREER Award CNS-0643687.  ... 
doi:10.1109/infocom.2008.122 dblp:conf/infocom/SubramanianDGD08 fatcat:2bdkveqwava7pkovnptcsdyrcy

Modeling wireless shadow networks

Filip De Turck, Aurel A. Lazar
2004 Proceedings of the 7th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems - MSWiM '04  
For directional antennas we investigate the expected throughput gain as a function of the beam-width.  ...  We consider wireless recovery networks as a strong candidate to provide emergency communication resources in case of such severe network outages, and to preserve, with minimal degradation in quality, the  ...  consider a game, where the antennas can be directed towards a receiver with the goal of increasing the SIR of a signal at a particular receiver.  ... 
doi:10.1145/1023663.1023699 dblp:conf/mswim/TurckL04 fatcat:2qd6sdhko5aa3g5oaq2jdbayza

Blockage-Robust 5G mm-Wave Access Network Planning

Mohammad Nourifar, Francesco Devoti, Ilario Filippini
2018 2018 IFIP Networking Conference (IFIP Networking) and Workshops  
However, the potential of several-GHz bandwidths must coexist with a harsh propagation environment.  ...  One of the most widely adopted techniques to guarantee a reliable service in mm-wave access scenarios is to establish multiple connections from mobile to different base stations.  ...  Finally, directional sensors have been considered in models for planning Wireless Sensor Networks (WSNs) [17] .  ... 
doi:10.23919/ifipnetworking.2018.8697024 dblp:conf/networking/NourifarDF18 fatcat:jmae3mdqonf4dawzkis3mpg4zy

Geo-fencing: Confining Wi-Fi Coverage to Physical Boundaries [chapter]

Anmol Sheth, Srinivasan Seshan, David Wetherall
2009 Lecture Notes in Computer Science  
To evaluate geo-fencing, we use measurements from an indoor testbed of Wi-Fi nodes and APs with electronically-steerable directional antennas.  ...  Our approach is based on directional antennas, and our motivation is to provide wireless access and privacy models that are a natural fit with user expectations.  ...  Most cellular network deployments extend the range of the network by using multiple directional antennas co-located at a central tower [17] , where each directional antenna services a sector of 90-180  ... 
doi:10.1007/978-3-642-01516-8_19 fatcat:qmjirk4imre2le4t2pmnr7efne

A survey on 5G massive MIMO localization

Fuxi Wen, Henk Wymeersch, Bile Peng, Wee Peng Tay, Hing Cheung So, Diange Yang
2019 Digital signal processing (Print)  
This paper provides a brief overview of this emerging field.  ...  Massive antenna arrays can be used to meet the requirements of 5G, by exploiting different spatial signatures of users.  ...  In NLOS the channel on a given subcarrier is generally modeled as independent Rayleigh fading, with no direct connection to the relative position of transmitter and receiver.  ... 
doi:10.1016/j.dsp.2019.05.005 fatcat:mcp5vuiqvvel3bf6gzuz2ashta

Multi Antenna Radar System for American Sign Language (ASL) Recognition Using Deep Learning [article]

Gavin MacLaughlin, Jack Malcolm, Syed Ali Hamza
2022 arXiv   pre-print
The additional degrees of freedom offered by joint temporal and spatial processing using a multiple antenna sensor can help to recognize ASL conversation between two or more individuals.  ...  The spatio-temporal images are fused and classified by a convolutional neural network (CNN) which is capable of discerning signs performed by different individuals even when the beamformer is unable to  ...  ACKNOWLEDGMENT The authors would like to thank Andrew West, Eli Kennedy, and LaJuan Washington Jr. for their assistance with data collection.  ... 
arXiv:2203.16624v1 fatcat:4v2bdmc3dbfhnjmtlf4mq3xbuq

Advances in Conformal Antennas

2019 International Journal of Engineering and Advanced Technology  
Through this paper, we develop a modeling of conformal antennas with recent advances through surveying of early manifestations  ...  For such conformal antennas the Patch antennas are often considered as the better candidate. In this paper, we discuss the conformal antennas with various substrates used for designing the antenna.  ...  In a given angular area the displayed calculation permits a versatile control of the polarization and of the DRR. To give the array excitations it requires a low time of CPU.  ... 
doi:10.35940/ijeat.f1361.0986s319 fatcat:wutc7deubvaaziw3rtqyorhcbu
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