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Topic Area: Wireless
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Displaying records 61 to 70 of 88 records.
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61. Proximity and Antenna Orientation Effects for Large-Form-Factor Devices in a Reverberation Chamber
Topic: Wireless
Published: 8/8/2013
Authors: Willem Burger, Catherine A Remley, Christopher L Holloway, John M Ladbury
Abstract: Recent research has shown that large-form-factor devices can affect radiated power measurements in a reverberation chamber due to absorbtion and physical blocking by lossy material present in the device. In this paper, these effects are explained and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913330

62. Quantize-and-Forward Relaying with M-ary Phase Shift Keying
Topic: Wireless
Published: 3/31/2008
Authors: Michael R Souryal, Huiqing You
Abstract: Using cooperative transmission, two or more single-antenna users can share their antennas to achieve spatial diversity in a slow fading channel. One relaying protocol that achieves diversity, amplify-and-forward (AF), is striking in its simplicity, b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51311

63. RFID-based Localization and Tracking Technologies
Topic: Wireless
Published: 4/1/2011
Authors: Michael R Souryal, Lionel M. Ni, Dian Zhang
Abstract: Radio Frequency Identification (RFID) usually incorporates a tag into an object for the purpose of identification or localization using radio signals. It has gained a lot of attention recently due to its advantages in terms of low cost and easy deplo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905571

64. 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

65. Radio Frequency and Analog/Mixed-Signal (RF and AMS) Technologies for Wireless Communications
Topic: Wireless
Published: 1/5/2009
Authors: Herbert S Bennett, Margaret Huang, John J. Pekarik
Abstract: The challenges facing the RF and AMS community as represented by the International Technology Roadmap for Semiconductors are summarized in this paper.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900886

66. Radio Propagation Measurements Before, During, and After the Collapse of Three Large Building Structures
Topic: Wireless
Published: 8/7/2008
Authors: Christopher L Holloway, Galen H Koepke, Dennis G Camell, Catherine A Remley
Abstract: We are investigating various schemes for detecting first responders and civilians with portable radios or cell phones who are trapped in voids in a collapsed or partially collapsed building. The first part of this effort is to understand propagation ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32926

67. Radio Wave Propagation Into Large Building Structures, Part 2: Characterization of Multipath
Topic: Wireless
Published: 4/2/2010
Authors: Catherine A Remley, Galen H Koepke, Christopher L Holloway, Chriss A. Grosvenor, Dennis G Camell, John M Ladbury, Robert T. Johnk, William F Young
Abstract: We report on measurements that characterize multipath conditions that affect broadband wireless communications in building penetration scenarios. Measurements carried out in various large structures quantify both radio-signal attenuation and frequenc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900151

68. Radio Wave Signal Propagation Into Large Building Structures Part 1: CW Signal Attenuation and Variability
Topic: Wireless
Published: 4/2/2010
Authors: Christopher L Holloway, William F Young, Galen H Koepke, Dennis G Camell, Catherine A Remley
Abstract: In this paper, we report on our investigation into radio communications problems faced by emergency responders in disaster situations. A fundamental challenge to communications into and out of large buildings is the strong attenuation of radio si ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=33178

69. 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

70. Real-Time Deployment of Multihop Relays for Range Extension
Topic: Wireless
Published: 6/11/2007
Authors: Michael R Souryal, Johannes Geissbuehler, Leonard E. Miller, Nader Moayeri
Abstract: When the range of single-hop wireless communication is limited by distance or harsh radio propagation conditions, relays can be used to extend the communication range through multihop relaying. This paper targets the need in certain scenarios for rap ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51163



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