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Topic Area: Wireless

Displaying records 51 to 60 of 95 records.
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51. Parametric Study on the use of Reverberation Chambers for Repeatable/Controllable Wireless Testing: Application to BER Measurements
Topic: Wireless
Published: 4/12/2010
Authors: Christopher L Holloway, E Genender, Catherine A Remley, John M Ladbury, Galen H Koepke
Abstract: We illustrate use of the reverberation chamber to simulate different wireless propagation environments including effects such as narrowband or frequency-selective fading and Doppler spread. These effects have a strong impact on the quality of the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=32988

52. 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

53. 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

54. Wireless Sensor Network Performance Metrics for Building Applications
Topic: Wireless
Published: 4/1/2010
Authors: Won Suk Jang, William M Healy
Abstract: Metrics are investigated to help assess the performance of wireless sensors in buildings. Wireless sensor networks present tremendous opportunities for energy savings and improvement in occupant comfort in buildings by making data about conditions a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901761

55. Measurement Bandwidth Extension Using Multisine Signals: Propagation of Error
Topic: Wireless
Published: 2/6/2010
Authors: Catherine A Remley, Dominique Schreurs, M. Myslinski, Dylan F Williams
Abstract: We describe a post-processing technique that can extend the effective measurement bandwidth of narrowband vector receivers by phase aligning overlapping measurements. The method requires only knowledge of the desired phases of a periodic, multisine e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901524

56. 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

57. Assessment of Performance Metrics for Use of Wireless Sensor Networks in Buildings
Topic: Wireless
Published: 9/30/2009
Authors: Won Suk Jang, William M Healy
Abstract: This paper is part of an effort to develop measurement systems and methods to better predict the performance of wireless sensor and control networks in building applications. Because of the variability in application requirements, the development of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902706

58. Measurements to Support Performance Evaluation of Wireless Communications in Tunnels for Urban Search and Rescue Robots
Topic: Wireless
Published: 9/4/2009
Authors: Catherine A Remley, Galen H Koepke, Dennis G. Camell, George Hough
Abstract: We describe methods for evaluating the performance of the wireless link used for control and telemetry for urban search and recue robots. These methods are based on identification and evaluation of performance metrics that describe impairments to the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901365

59. Measurements to Support Public Safety Communications: Attenuation and Variability of 750 MHz Radio Wave Signals in Four Large Building Structures: NIST Technical Note 1552
Series: Technical Note (NIST TN)
Topic: Wireless
Published: 8/7/2009
Authors: William F Young, Catherine A Remley, John M Ladbury, Christopher L Holloway, Chriss A. Grosvenor, Galen H Koepke, Sander Floris, Wouter Numan, Andrea Garuti
Abstract: In this report, we investigate radio communication problems faced by emergency responders (firefighters, police, and emergency medical personnel) in disaster situations. A fundamental challenge to radio communications into and out of large buildings ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903077

60. Representing Bias-Network Baseband Characteristics when Simulating Intermodulation Distortion
Topic: Wireless
Published: 6/15/2009
Authors: Catherine A Remley, C. Michael Olsen, Susan L. Sweeney
Abstract: We demonstrate a method to characterize and represent bias-tees, and other components in the signal path, in an accurate and practical fashion in circuit simulations. The method involves measuring S-parameters of the bias-tee, other surrounding circu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904679



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