U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Advanced communications

Wireless (RF)

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author
Published Date
Displaying 576 - 600 of 652

Test Tool for Industrial Ethernet Network Performance

June 5, 2009
Author(s)
James D. Gilsinn, Freemon Johnson
The number of devices that implement Ethernet interfaces on the factory floor is growing at an exponential rate along with the adoption of industrial-grade Ethernet networks on the plant floor. In addition to the sheer number of devices using industrial

The IMS 2009 "Bonus Issue"

May 1, 2009
Author(s)
Catherine A. Remley
This is an Editorial for a special issue of IEEE Microwave Magazine devoted to the International Microwave Symposium. Kate Remley, the Editor-in-Chief, and two co-editors write about this issue.

Probabilistic Call Admission Control Algorithm for WLAN in a Heterogeneous Wireless Environment

April 30, 2009
Author(s)
Nicolas Chevrollier, David W. Griffith, Nada T. Golmie, SuKyoung Lee, Kyungsoo Kim, Hong Kunho, YoonHyuk Kim
In an integrated WLAN and cellular network, if all mobile users whose connections originate in the cellular network migrate to the WLAN whenever they enter the double coverage area, the WLAN will be severely congested and its users will suffer from

Standard Radio CommunicationTest Method for Mobile Ground Robots

March 31, 2009
Author(s)
Kate Remley, Galen H. Koepke
This paper describes a proposed standard method for conducting a performance evaluation of wireless communications links used for the control and telemetry systems on mobile ground robots. Range performance metrics are determined under open line-of-sight

Performance Metrics for IEEE 802.21 Media Independent Handover (MIH) Signaling

March 2, 2009
Author(s)
David W. Griffith, Richard A. Rouil, Nada T. Golmie
The IEEE 802.21 Media Independent Handover (MIH) working group is developing a set of mechanisms to facilitate migration of mobile users between access networks that use different link-layer technologies. Among these are mobility managers that create and

On The Security Performance of Physical-Layer Network Coding

January 5, 2009
Author(s)
Yi Qian, Kejie Lu, Shengli Fu, Tao Zhang
Physical-layer network coding (PLNC) is a novel wireless communication technology, in which multiple transmitters can send signals on the same channel to the same receiver at the same time. Our previous studies have revealed that PLNC can substantially

Diversity Performance of a Practical Non-Coherent Detect-and-Forward Receiver

November 30, 2008
Author(s)
Michael R. Souryal, Huiqing You
We propose a non-coherent receiver for the fixed detect-and-forward relay channel and derive a closed-form tight upper bound on its bit error probability in Rayleigh fading channels. Using this upper bound, we show that the receiver achieves nearly full

Non-Coherent Amplify-and-Forward Generalized Likelihood Ratio Test Receiver

November 30, 2008
Author(s)
Michael R. Souryal
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

Performance Evaluation of a Secure Mac Protocol for Vehicular Networks

November 17, 2008
Author(s)
Yi Qian, Kejie Lu, Nader Moayeri
The main benefit of vehicular communication is seen in active safety systems that increase passenger safety by exchanging warning messages between vehicles. Other applications and private services are also permitted in order to lower the cost and to

Using the EAP Framework for Fast Media Independent Handover Authentication

November 17, 2008
Author(s)
Antonio Izquierdo Manzanares, Nada T. Golmie, Katrin Hoeper, Lidong Chen
In this paper we compare different authentication techniques that may be used in order to reduce the time and resources required to perform a handover, namely, re-authentication and pre-authentication. We provide a detailed analysis of each mechanism, and

Forensic Filtering of Cell Phone Protocols

August 27, 2008
Author(s)
Aurelien M. Delaitre, Wayne Jansen
Phone managers are non-forensic software tools designed to carry out a range of tasks for the user, such as reading and updating the contents of a phone, using one or more of the communications protocols supported by the phone. Phone managers are sometimes

Wireless Communications in Tunnels for Urban Search and Rescue Robots

August 18, 2008
Author(s)
Catherine A. Remley, George Hough, Galen H. Koepke, Dennis G. Camell, Robert Johnk, Chriss A. Grosvenor
We report on propagation tests carried out in a subterranean tunnel to support improved wireless communications for urban search and rescue robots. We describe single-frequency and ultrawideband channel-characterization tests that we conducted, as well as
Was this page helpful?