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Energy-efficient communication protocol for wireless microsensor networks

by Wendi Rabiner Heinzelman, Anantha Chandrakasan, Hari Balakrishnan , 2000
"... Wireless distributed microsensor systems will enable the reliable monitoring of a variety of environments for both civil and military applications. In this paper, we look at communication protocols, which can have significant impact on the overall energy dissipation of these networks. Based on our f ..."
Abstract - Cited by 2103 (10 self) - Add to MetaCart
findings that the conventional protocols of direct transmission, minimum-transmission-energy, multihop routing, and static clustering may not be optimal for sensor networks, we propose LEACH (Low-Energy Adaptive Clustering Hierarchy), a clustering-based protocol that utilizes randomized rotation of local

A High-Throughput Path Metric for Multi-Hop Wireless Routing

by Douglas S. J. De Couto, Daniel Aguayo, John Bicket, Robert Morris , 2003
"... This paper presents the expected transmission count metric (ETX), which finds high-throughput paths on multi-hop wireless networks. ETX minimizes the expected total number of packet transmissions (including retransmissions) required to successfully deliver a packet to the ultimate destination. The E ..."
Abstract - Cited by 1108 (5 self) - Add to MetaCart
This paper presents the expected transmission count metric (ETX), which finds high-throughput paths on multi-hop wireless networks. ETX minimizes the expected total number of packet transmissions (including retransmissions) required to successfully deliver a packet to the ultimate destination

Ariadne: a secure on-demand routing protocol for ad hoc networks," in

by Yih-Chun Hu , Adrian Perrig , David B Johnson - Proc. 8th ACM International Conf. Mobile Computing Networking , , 2002
"... Abstract An ad hoc network is a group of wireless mobile computers (or nodes), in which individual nodes cooperate by forwarding packets for each other to allow nodes to communicate beyond direct wireless transmission range. Prior research in ad hoc networking has generally studied the routing prob ..."
Abstract - Cited by 925 (12 self) - Add to MetaCart
Abstract An ad hoc network is a group of wireless mobile computers (or nodes), in which individual nodes cooperate by forwarding packets for each other to allow nodes to communicate beyond direct wireless transmission range. Prior research in ad hoc networking has generally studied the routing

Convex Position Estimation in Wireless Sensor Networks

by Lance Doherty , Kristofer S. J. Pister , Laurent El Ghaoui
"... A method for estimating unknown node positions in a sensor network based exclusively on connectivity-induced constraints is described. Known peer-to-peer communication in the network is modeled as a set of geometric constraints on the node positions. The global solution of a feasibility problem fo ..."
Abstract - Cited by 493 (0 self) - Add to MetaCart
unknown nodes in the network is given. The area of the bounding rectangles decreases as additional or tighter constraints are included in the problem. Specific models are suggested and simulated for isotropic and directional communication, representative of broadcast-based and optical transmission

Direct-Transmission Models of Dynamical Supersymmetry Breaking

by Izawa K. -i, Y. Nomura, K. Tobe, T. Yanagida , 1997
"... We systematically construct gauge-mediated supersymmetry(SUSY)-breaking models with direct transmission of SUSY-breaking effects to the standard-model sector. We obtain a natural model with the gravitino mass m3/2 smaller than 1 keV as required from the standard cosmology. If all Yukawa coupling con ..."
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We systematically construct gauge-mediated supersymmetry(SUSY)-breaking models with direct transmission of SUSY-breaking effects to the standard-model sector. We obtain a natural model with the gravitino mass m3/2 smaller than 1 keV as required from the standard cosmology. If all Yukawa coupling

Distributed topology control for power efficient operation in multihop wireless ad hoc networks

by Roger Wattenhofer, Li Li, Paramvir Bahl, Yi-min Wang , 2001
"... Abstract — The topology of wireless multihop ad hoc networks can be controlled by varying the transmission power of each node. We propose a simple distributed algorithm where each node makes local decisions about its transmission power and these local decisions collectively guarantee global connecti ..."
Abstract - Cited by 383 (18 self) - Add to MetaCart
connectivity. Specifically, based on the directional information, a node grows it transmission power until it finds a neighbor node in every direction. The resulting network topology increases network lifetime by reducing transmission power and reduces traffic interference by having low node degrees. Moreover

Spectrum Sensing with SS-AOA Measurements and Directional Transmissions

by Ahmed O. Nasif, Brian L. Mark , 2009
"... Number: TR-GMU-NAPL-Y09-N2 ..."
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Number: TR-GMU-NAPL-Y09-N2

Using Directional Transmissions and Receptions to Reduce Contention in Wireless Sensor Networks

by Ambuj Varshney, Thiemo Voigt, Luca Mottola
"... Abstract. Electronically Switched Directional (ESD) antennas allow software-based control of the direction of maximum antenna gain. ESD antennas are feasible for wireless sensor network. Existing studies with these antennas focus only on controllable directional transmissions. These studies demonstr ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
Abstract. Electronically Switched Directional (ESD) antennas allow software-based control of the direction of maximum antenna gain. ESD antennas are feasible for wireless sensor network. Existing studies with these antennas focus only on controllable directional transmissions. These studies

Capacity bounds and power allocation for wireless relay channels

by Anders Høst-madsen, Junshan Zhang - IEEE TRANS. INF. THEORY , 2005
"... We consider three-node wireless relay channels in a Rayleigh-fading environment. Assuming transmitter channel state information (CSI), we study upper bounds and lower bounds on the outage capacity and the ergodic capacity. Our studies take into account practical constraints on the transmission/rece ..."
Abstract - Cited by 324 (6 self) - Add to MetaCart
/reception duplexing at the relay node and on the synchronization between the source node and the relay node. We also explore power allocation. Compared to the direct transmission and traditional multihop protocols, our results reveal that optimum relay channel signaling can significantly outperform multihop protocols

1Modeling Buffer-Aided Relay Selection in Networks with Direct Transmission Capability

by Themistoklis Charalambous, Nikolaos Nomikos, Student Member, Ioannis Krikidis, Senior Member, Demosthenes Vouyioukas, Mikael Johansson
"... Abstract—We consider a wireless relay network that consists of a source, half-duplex decode-and-forward buffer-aided relays and a destination. While the majority of previous works on relay selection assume no direct transmission between source and destination in such a setting, we lift this assumpti ..."
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Abstract—We consider a wireless relay network that consists of a source, half-duplex decode-and-forward buffer-aided relays and a destination. While the majority of previous works on relay selection assume no direct transmission between source and destination in such a setting, we lift
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