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Mobile ad hoc networking: imperatives and challenges

by Imrich Chlamtac , Marco Conti , Jennifer J.-N. Liu , 2003
"... Mobile ad hoc networks (MANETs) represent complex distributed systems that comprise wireless mobile nodes that can freely and dynamically self-organize into arbitrary and temporary, "ad-hoc" network topologies, allowing people and devices to seamlessly internetwork in areas with no pre-exi ..."
Abstract - Cited by 297 (7 self) - Add to MetaCart
, the introduction of new technologies such as the Bluetooth, IEEE 802.11 and Hyperlan are helping enable eventual commercial MANET deployments outside the military domain. These recent evolutions have been generating a renewed and growing interest in the research and development of MANET. This paper attempts

3-D Sound for Virtual Reality and Multimedia

by Durand Begault , 2000
"... This paper gives HRTF magnitude data in numerical form for 43 frequencies between 0.2---12 kHz, the average of 12 studies representing 100 different subjects. However, no phase data is included in the tables; group delay simulation would need to be included in order to account for ITD. In 3-D sound ..."
Abstract - Cited by 282 (5 self) - Add to MetaCart
This paper gives HRTF magnitude data in numerical form for 43 frequencies between 0.2---12 kHz, the average of 12 studies representing 100 different subjects. However, no phase data is included in the tables; group delay simulation would need to be included in order to account for ITD. In 3-D sound

Fidelity and yield in a volcano monitoring sensor network

by Geoff Werner-allen, Konrad Lorincz, Jeff Johnson, Jonathan Lees, Matt Welsh - In Proc. 7th USENIX Symposium on Operating Systems Design and Implementation (OSDI 2006 , 2006
"... We present a science-centric evaluation of a 19-day sensor network deployment at Reventador, an active volcano in Ecuador. Each of the 16 sensors continuously sampled seismic and acoustic data at 100 Hz. Nodes used an event-detection algorithm to trigger on interesting volcanic activity and initiate ..."
Abstract - Cited by 268 (11 self) - Add to MetaCart
and initiate reliable data transfer to the base station. During the deployment, the network recorded 229 earthquakes, eruptions, and other seismoacoustic events. The science requirements of reliable data collection, accurate event detection, and high timing precision drive sensor networks in new directions

High-frequency Acoustic Recording Package (HARP) for broad-band, long-term marine mammal monitoring

by Sean M. Wiggins, John A. Hildebrand - International Symposium on Underwater Technology 2007 and International Workshop on Scientific Use of Submarine Cables & Related Technologies 2007 Pages 551-557, Institute of Electrical and Electronics Engineers
"... high-data-capacity consumer computer technology during the past decade have been adapted to autonomously record sounds from marine mammals over long periods. Acoustic monitoring has advantages over traditional visual surveys including greater detection ranges, continuous long-term monitoring in remo ..."
Abstract - Cited by 26 (8 self) - Add to MetaCart
-data capacity system capable of autonomously recording toothed whales and other marine mammals for long periods has prompted the development of a High-frequency Acoustic Recording Package (HARP) capable of sample rates up to 200 kHz. Currently, HARPs accumulate data at a rate of almost 2 TB per instrument

ns Notes and Documentation

by Kevin Fall, Kannan Varadhan , 2000
"... This document (ns Notes and Documentation) provides reference documentation for ns. Although we begin with a simple simulation script, resources like Marc Greis's tutorial web pages (at http://titan.cs.uni-bonn.de/~greis/ns/ ns.html) or the slides from one of the ns tutorials are problably bett ..."
Abstract - Cited by 233 (0 self) - Add to MetaCart
This document (ns Notes and Documentation) provides reference documentation for ns. Although we begin with a simple simulation script, resources like Marc Greis's tutorial web pages (at http://titan.cs.uni-bonn.de/~greis/ns/ ns.html) or the slides from one of the ns tutorials are problably better places to begin for the ns novice.

A novel omnidirectional broadband planar monopole antenna with various loading plate shapes

by S. M. Mazinani, H. R. Hassani - Progress In Electromagnetics Research
"... Abstract—A novel, low profile and broadband plate loaded planar monopole antenna is investigated. The proposed antenna consists of a rectangular planar monopole with small plates attached to its radiating edges. Two types of plates, rectangular and cylindrical shapes are fabricated and tested. The c ..."
Abstract - Cited by 4 (0 self) - Add to MetaCart
. The characteristics of the antennas are investigated in both frequency and time domains. The study shows that the proposed antennas are capable of achieving broadband and omnidirectional radiation characteristics within 2.9–17.9GHz with the cylindrical loading plates and 2.9–16.7GHz for the rectangular loading plates

High-Performance Communication Networks

by Jean Walrand, Pravin Varaiya
"... Contents 1 Wireless Networks 1 1.1 Introduction ...................................... 1 1.1.1 History of Wireless Networks ........................ 2 1.1.2 Wireless Data Vision ............................. 5 1.1.3 Technical Challenges ............................. 7 1.2 The Wireless Channel ...... ..."
Abstract - Cited by 161 (4 self) - Add to MetaCart
................................. 8 1.2.1 Path loss ................................... 9 1.2.2 Shadow Fading ................................ 10 1.2.3 Multipath Flat-fading and Intersymbol Interference ............. 11 1.2.4 Doppler Frequency Shift ........................... 12 1.2.5 Interference

Optical Broadband Angular Selectivity

by Yichen Shen, Dexin Ye, Ivan Celanovic, Steven G Johnson, John D Joannopoulos
"... Light selection based purely on the angle of propagation is a long-standing sci-entific challenge. In angularly selective systems, however, the transmission of light usually also depends on the light frequency. We tailored the overlap of the bandgaps of multiple one-dimensional photonic crystals, ea ..."
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Light selection based purely on the angle of propagation is a long-standing sci-entific challenge. In angularly selective systems, however, the transmission of light usually also depends on the light frequency. We tailored the overlap of the bandgaps of multiple one-dimensional photonic crystals

Exploiting the 60 GHz Band for Local Wireless Multimedia Access: Prospects and Future Directions

by Peter Smulders , 2002
"... This article addresses basic issues regarding the design and development of wireless access and wireless LAN systems that will operate in the 60 GHz band as part of the fourth-generation (4G) system. The 60 GHz band is of much interest since this is the band in which a massive amount of spectral spa ..."
Abstract - Cited by 127 (15 self) - Add to MetaCart
and efficient network deployment are important prerequisites for market success. This article discusses these features and indicates a number of key research topics.

COMPACT OMNI-DIRECTIONAL PATCH ANTENNA FOR S-BAND FREQUENCY SPECTRA

by P. A. Ambresh, P. M. Hadalgi, P. V. Hunagund
"... This paper presents a novel design of a microstrip patch antenna with compact nature and the study of various antenna parameters to suit the applications such as WiMax operating in the frequency range of 3.3 – 3.5 GHz and in other applications like fixed satellite services, maritime mobile services ..."
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This paper presents a novel design of a microstrip patch antenna with compact nature and the study of various antenna parameters to suit the applications such as WiMax operating in the frequency range of 3.3 – 3.5 GHz and in other applications like fixed satellite services, maritime mobile services
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