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You searched on: Topic Area: Wireless

Displaying records 21 to 30 of 42 records.
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21. 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

22. 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

23. Ant-Colony Based Near-ML Block Decoder in Asynchronous Cooperative MIMO Systems Using a Linear Dispersion Structure
Topic: Wireless
Published: 6/5/2011
Authors: Hamid Gharavi, Chong Xu
Abstract: The linear dispersion structure is employed to accommodate the dynamic topology of cooperative networks, as well as to achieve higher throughput than conventional space-time codes based on orthogonal designs. Asynchronous Cooperative Liner Dispersio ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907007

24. Pixel Interlacing Based Video Transmission for Low-complexity Intra-frame Error Concealment
Topic: Wireless
Published: 6/1/2011
Author: Hamid Gharavi
Abstract: When multi-path fading and interference frequently disrupts a mobile radio communication system, it can seriously undermine its reliability for transmission of compressed video signals. In this paper, we present a pixel interlacing based video transm ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908154

25. A Joint Vehicle-Vehicle/Vehicle-Roadside Communication Protocol for Highway Traffic Safety
Topic: Wireless
Published: 5/1/2011
Author: Hamid Gharavi
Abstract: In this paper, a joint vehicle-vehicle/vehicle-roadside communication protocol is proposed for cooperative collision avoiding in Vehicular Ad Hoc Networks (VANETs). In this protocol, emergency warning messages are simultaneously transmitted via Veh ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908093

26. Performance Measurements and Analysis of Low Data Rate Wireless Communication Under Interference Sources in Buildings
Topic: Wireless
Published: 10/13/2010
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: Interference from collocated networks operating over the same frequency range becomes an increasingly severe problem as the number of networks overlapping geographically increases within commercial and residential buildings. This paper aims to highli ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905715

27. An Experimental Study of Interference Impacts on ZigBee-based Wireless Communications Inside Buildings
Topic: Wireless
Published: 8/7/2010
Authors: Wenqi Guo, William M Healy, Mengchu Zhou
Abstract: ZigBee is a wireless technology developed as an open global standard to address the unique needs of low-cost, low-power wireless sensor networks. This standard takes full advantages of the IEEE 802.15.4 physical radio specification and operates in un ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905714

28. Non-Coherent Amplify-and-Forward Generalized Likelihood Ratio Test Receiver
Topic: Wireless
Published: 7/30/2010
Author: Michael R Souryal
Abstract: This paper proposes a simple non-coherent amplify-and-forward receiver for the relay channel and evaluates its diversity performance for Rayleigh fading channels. We use the generalized likelihood ratio test to obtain the decision rule in closed form ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905550

29. Impact of RF Interference between a Passive RFID System and a Frequency Hopping Communications System in the 900 MHz ISM Band
Topic: Wireless
Published: 7/25/2010
Author: Michael R Souryal
Abstract: We present experimental measurements and analysis of RF interference between a passive RFID system and a generic frequency hopping communications system in the 902 928 MHz ISM radio band. Interference in both directions is considered, RFID to communi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904764

30. Rapidly-Deployable Mesh Network Testbed
Topic: Wireless
Published: 11/30/2009
Authors: Michael R Souryal, Nader Moayeri, Andreas Wapf
Abstract: This paper describes a wireless mesh network testbed for research in rapid deployment and auto-configuration of mesh nodes. Motivated by the needs of first responders and military personnel arriving to an incident area, we developed and tested an au ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902070



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