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Topic Area: Wireless

Displaying records 11 to 20 of 88 records.
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11. Cooperative Diversity Routing and Transmission for Wireless Sensor Networks
Topic: Wireless
Published: 4/12/2013
Author: Hamid Gharavi
Abstract: In this paper, we present a novel design framework aimed at developing ‰cooperative diversity‰ in 802.11-based wireless sensor networks. The proposed scheme is a combination of a time-reversed Space-Time Block Code (TR STBC) scheme at the physical la ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913802

12. Dynamic Key Refreshment for Smart Grid Mesh Network Security
Topic: Wireless
Published: 2/24/2013
Author: Hamid Gharavi
Abstract: This paper presents a dynamically updating key distribution strategy to enhance mesh network security against cyber attacks. The scheme has been applied to two security protocols known as Simultaneous Authentication of Equals (SAE) and Efficient Mesh ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912924

13. Novel Tree-Search Algorithm versus Sphere-Decoding-based Algorithms for MIMO system with Inter-Symbol Interference
Topic: Wireless
Published: 12/3/2012
Author: Hamid Gharavi
Abstract: In this paper we firstly propose a general model to combat the Inter-Symbol Interference (ISI) caused by frequency selective channels in a Multi-InputMulti-Output (MIMO) system and/or by asynchronous cooperative transmissions. The general model is no ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911826

14. Biometrics in a Networked World
Topic: Wireless
Published: 12/2/2012
Author: Kevin C Mangold
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911889

15. Virtual Reality Platform to Study RF Propagation in Body Area Networks
Topic: Wireless
Published: 12/2/2012
Authors: Kamran Sayrafian, John G Hagedorn, Wen-Bin Yang, Judith Ellen Terrill
Abstract: Design of efficient wireless communication protocols for body area networks requires in-depth understanding of the propagation media i.e. the human body. As obtaining large amount of data for many scenarios and use-cases via physical experiment i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912376

16. A Low-Complexity Solution to Decode Diversity-Oriented Block Codes in MIMO Systems with Inter-Symbol Interference
Topic: Wireless
Published: 10/1/2012
Authors: Hamid Gharavi, Chong Xu
Abstract: In this paper we firstly propose a block-code based general model to combat the Inter-Symbol Interference (ISI) caused by frequency selective channels in a Multi-Input Multi- Output (MIMO) system and/or by asynchronous cooperative transmissions. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911916

17. Radiation Pattern of an UWB Wearable Antenna: A Preliminary Study
Topic: Wireless
Published: 9/24/2012
Authors: Wen-Bin Yang, Kamran Sayrafian
Abstract: Inhomogeneity of the propagation medium in body area networks could have a great impact on the sensor node‰s antenna characteristics. This in turn could affect the quality of the communication links unless the impact of the human body has been pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912111

18. Impacts of 2.4 GHz ISM Band Interference on IEEE 802.15.4 Wireless Sensor Network Reliability in Buildings
Topic: Wireless
Published: 9/9/2012
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: With the recent emergence of standards, wireless solutions are ready to be deployed in building automation networks. IEEE 802.15.4 is a standard for short range wireless networks. Its major applications fields are home and building automation, as wel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906735

19. Traffic Scheduling Technique for Smart Grid Advanced Metering Applications
Topic: Wireless
Published: 6/5/2012
Author: Hamid Gharavi
Abstract: In this paper, we present a multi-gate mesh network architecture that has been developed to ensure high performance and reliability under emergency conditions when a system expects to receive power outage notifications and exchanges. In order to hand ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910997

20. Battery Discharge Characteristics of Wireless Sensors in Building Applications
Topic: Wireless
Published: 4/11/2012
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: Sensor nodes in wireless networks often use batteries as their source of energy, but replacing or recharging exhausted batteries in a deployed network can be difficult and costly. Therefore, prolonging battery life becomes a principal objective ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910723



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