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.

Information Technology

Networking

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author
  • Published Date
Displaying 376 - 400 of 833

A Call Admission Control Algorithm for WLAN in Heterogeneous Wireless Networks

June 25, 2007
Author(s)
SuKyoung Lee, David W. Griffith, Kyungsoo Kim, Nada T. Golmie
One major challenge in the integration of wireless LAN (WLAN) and cellular networks is call admission control (CAC). Without a suitable CAC mechanism for the integrated network, the two networking systems will work independently and cannot simultaneously

Real-Time Deployment of Multihop Relays for Range Extension

June 11, 2007
Author(s)
Michael R. Souryal, Johannes Geissbuehler, Leonard E. Miller, Nader Moayeri
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 rapid

3-D Segmentation and Motion Estimation of Range Data for Crash Prevention

June 6, 2007
Author(s)
Hamid Gharavi
In this paper we present a 3-D object segmentation and motion estimation scheme of range video data for crash prevention applications. The segmentation is based on slope values of every point in the scene with which atomic regions are constructed by region

Recursive Motion Estimation of Range Image

April 4, 2007
Author(s)
Hamid Gharavi, Shaoshuai Gao
In this paper, we present an innovative recursive motion estimation technique that can take advantage of the in-depth resolution (range) to perform an accurate estimation of objects that have undergone 3-D translational and rotational movements. This

Sensor Location through Linear Programming with Arrival Angle Constraints

March 14, 2007
Author(s)
Camillo Gentile, J Shiu
In previous work, we established a linear programming framework to determine sensor location from measured link distances between neighboring nodes in a network. Besides providing greater accuracy compared to other techniques, linear programs in particular

3-D Motion Estimation Using Range Data

March 1, 2007
Author(s)
Hamid Gharavi, Shaoshuai Gao
Advanced vehicle-based safety and warning systems use laser scanners to measure road geometry (position, curvature), and range to obstacles in order to warn a driver of an impending crash and/or to activate safety devices (air bags, brakes, steering). In

Guide to Intrusion Detection and Prevention Systems (IDPS)

February 20, 2007
Author(s)
Karen A. Scarfone, Peter M. Mell
The National Institute of Standards and Technology (NIST) developed this document in furtherance of its statutory responsibilities under the Federal Information Security Management Act (FISMA) of 2002, Public Law 107-347. This publication seeks to assist

Low-Noise PPLN-based Single-Photon Detector

February 13, 2007
Author(s)
Hai Xu, Lijun Ma, Oliver T. Slattery, Xiao Tang
This paper describes the detection of single photons, which have been transmitted through standard fiber at the telecom wavelength of 1310 nm. Following transmission, the 1310-nm photon is up-converted to 710 nm in a periodical-poled LiNbO3 (PPLN)

Establishing Wireless Robust Security Networks: A Guide to IEEE 802.11i

February 7, 2007
Author(s)
Sheila E. Frankel, Bernard Eydt, L Owens, Karen Kent Scarfone
This report provides readers with a detailed explanation of next generation 802.11 wireless security. It describes the inherently flawed Wired Equivalent Privacy (WEP) and explains 802.11i's two-step approach (interim and long-term)to providing effective

Scanning Advanced Automobile Technology

January 31, 2007
Author(s)
Hamid Gharavi, K V. Prasad, P. Ioannou
The progress of some of the key electrical, electronics, communications, controls and software technologies that enable in-vehicle, vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) functions is presented, in historical, current & futuristic

A Comprehensive Evaluation of Indoor ranging using Ultra-Wideband Technology

January 15, 2007
Author(s)
Camillo Gentile, El Kik
Ultra-wideband technology shows promise for precision ranging due to its fine time resolution to resolve multipath fading and the presence of lower frequencies in the baseband to penetrate walls. While a concerted effort has been conducted in the extensive

A Pel-Recursive Motion Estimation Algorithm

January 9, 2007
Author(s)
Hamid Gharavi, H Reza-alikhani
This paper presents a new pel recursive motion estimation algorithm for video coding applications. The derivation of the algorithm is based on Recursive Least-Squares (RLS) estimation that minimizes the mean square prediction error. A comparison with the

A Survey of Self-Organization in Wireless Networks

January 1, 2007
Author(s)
Kevin L. Mills
This paper surveys recent research on self-organizing techniques applied to design and control large wireless ad hoc and sensor networks. The survey divides that research into five functional categories: (1) resource sharing, (2) structure formation and

Adaptive Channel Scanning for IEEE 802.16e

October 23, 2006
Author(s)
Richard A. Rouil, Nada T. Golmie
In this article we propose an adaptive algorithm that determines the duration and frequency of channel scanning in order to facilitate the discovery of neighboring base stations and handovers across multiple IEEE 802.16 networks. The proposed algorithm

Programmable Active Services for SIP

October 1, 2006
Author(s)
Jean Deruelle, Mudumbai Ranganathan, Douglas C. Montgomery
We have implemented a quantum key distribution (QKD) system with polarization encoding at 850 nm over 1 km of optical fiber. The high-speed management of the bit-stream, generation of random numbers and processing of the sifting algorithm are all handled

Study of BGP Peering Session Attacks and Their Impacts on Routing Performance

October 1, 2006
Author(s)
Kotikalapudi Sriram, Douglas C. Montgomery, Oliver Borchert, Okhee Kim, David R. Kuhn
We present a detailed study of the potential impact of BGP peering session attacks and the resulting exploitation of Route Flap Damping (RFD) that cause network-wide routing disruptions. We consider canonical grid as well as down-sampled realistic

Unsupervised Anomaly Detection System Using Next-Generation Router Architecture

October 1, 2006
Author(s)
Richard A. Rouil, Nicolas Chevrollier, Nada T. Golmie
Unlike many intrusion detection systems that rely mostly on labeled training data, we propose a novel technique for anomaly detection based on unsupervised learning and we apply it to counter denial-of-service attacks. Initial simulation results suggest

Guide to Computer Security Log Management

September 13, 2006
Author(s)
Karen A. Scarfone, Murugiah Souppaya
The National Institute of Standards and Technology (NIST) developed this document in furtherance of its statutory responsibilities under the Federal Information security Management Act (FISMA) of 2002, Public Law 107-347. This publication seeks to assist
Was this page helpful?