ZDNet Resources
- Hydrogen-powered cars with zero-carbon-emission?
- Researchers from the Georgia Institute of Technology have a bright idea -- at least at first sight. They want to create a sustainable transportation system by using hydrogen-powered cars. They would like to create an infrastructure where people could use a liquid fuel for driving while the carbon emission in...
- Tags: Georgia Institute Of Technology, Georgia Tech, Hydrogen, Carbon, Carbon Emission, Transportation, Roland Piquepaille
- Blog posts 2008-02-14
- Improving the Efficiency and Robustness of Intrusion Detection Systems
- With the increase in the complexity of computer systems, existing security measures are not enough to prevent attacks. Intrusion detection systems have become an integral part of computer security to detect attempted intrusions. Intrusion detection systems need to be fast in order to detect intrusions in real time. Furthermore, intrusion...
- Tags: Georgia Institute Of Technology, Intrusion Detection System, Intrusion Detection, Network Security, Security, Networking
- White papers 2007-12-01
- An Extension of the Square Root Law of TCP
- Using probabilistic scaling methods, the square root law of TCP to schemes is extended which may not be of the AIMD type. The results offer insight in the relationship between throughput and loss rate, and the time scale on which losses take place. Similar results are shown to hold in...
- Tags: Georgia Institute Of Technology, Loss, TCP, Tcp/Ip, Networking
- White papers 2007-09-05
- Modeling and Simulations of TCP MANET Worms
- Mobile Ad-hoc Networks (MANETs) are used for emergency situations like disaster - relief, military applications, and emergency medical situations. These applications make MANETs attractive targets for cyber - attacks and make the development of counter - measures paramount. The study of worm behavior is critical to the design of effective...
- Tags: Georgia Institute Of Technology, TCP, Worm, Modeling, Tcp/Ip, Cyberthreats, Networking, Viruses And Worms, Security
- White papers 2007-03-19
- ISP and Egress Path Selection for Multihomed Networks
- Multihoming has been used by stub networks for several years as a form of redundancy, improving the availability of Internet access. More recently, Intelligent Route Control (IRC) products allow multihomed networks to dynamically switch parts of their egress or ingress traffic between ISPs, also improving cost and performance. IRC products...
- Tags: Georgia Institute Of Technology, Network, Internet Service Provider, Internet Service Providers (ISPs), Internet
- White papers 2007-01-01
- TCP-Planet: A Reliable Transport Protocol for InterPlaNetary Internet
- The space exploration missions are crucial for acquisition of information about the space and the universe. The entire success of a mission is directly related to the satisfaction of its communications needs. For this goal, the challenges posed by the InterPlaNetary Internet need to be addressed. Current TCP protocols have...
- Tags: Georgia Institute Of Technology, Internet, Performance, Performance Degradation, TCP, Tcp/Ip, Performance Management, Networking, Human Resources, Workforce Management
- White papers 2007-01-01
- The Origin of TCP Traffic Burstiness in Short Time Scales
- Internet traffic exhibits multifaceted burstiness and correlation structure over a wide span of time scales. This paper focuses on shorter scales, typically less than 100-1000 milliseconds. The objective is to identify the actual mechanisms that are mostly responsible for creating bursty traffic in those scales. It shows that TCP self-clocking,...
- Tags: Georgia Institute Of Technology, TCP, Tcp/Ip, Networking
- White papers 2007-01-01
- Nanoprobe catches cells in action
- Researchers at the Georgia Institute of Technology have built a nanoscale probe, called the Scanning Mass Spectrometry (SMS) probe, which can capture cell properties in action. This advance in biochemical imaging could lead to new instruments for better understanding cellular interactions by watching biochemical signals alive -- in our bodies...
- Tags: ion, Scanning Mass Spectrometry
- Blog posts 2006-07-25
- Security Services in Wireless Sensor Networks Using Sparse Random Coding
- The task of providing security services for wireless sensor networks is not trivial due to the resource constraints of the sensor nodes. An adversary may launch a wide range of attacks including eavesdropping, message forgery, packet dropping, and noise injection. This paper proposes Random Coding Security (RCS) that provides protection...
- Tags: Georgia Institute Of Technology, Network, Sensor, Attack, Security, Wi-Fi, Wireless
- White papers 2006-07-07
- Optimizing Operand Transport Using Dynamic SIMDization in Multimedia Systems
- For multimedia processing, modern Instruction-Level Parallel (ILP) processors are faced with limited parallelism and inevitable communication issues, as silicon feature size decreases and pipelines become wider. This paper proposes and evaluates a dynamic optimization mechanism that exploits regular operand distribution patterns in multimedia applications. The proposed methodology; improves performance by...
- Tags: Georgia Institute Of Technology, Multimedia, Optimization
- White papers 2006-04-11
- OFDM Link Performance With Companding for PAPR Reduction in the Presence of Non-Linear Amplification
- Use of companding for Peak-to-Average-Power Ratio (PAPR) control is explored for a link involving a non-linear transmit power amplifier with Orthogonal Frequency Division Multiplexing (OFDM). Specifically, the objective of the study was to determine if companding using u-law compression/expansion at the transmitter/receiver, respectively, provides end-to-end performance gains relative to a...
- Tags: Georgia Institute Of Technology, Performance, Transmitter, Amplifier, OFDM, Performance Management, Wireless, Human Resources, Workforce Management
- White papers 2006-02-02
- Implementation of an Anti-Collision Differential-Offset Spread Spectrum RFID System
- Radio Frequency IDentification (RFID) describes a system by which any product can be labeled with any information that can be accessed at any time without having direct contact with the item. This information can be stored on the item itself, making automation and control incredibly simple, fast, and noninvasive. This...
- Tags: Georgia Institute Of Technology, Solution, Spectrum, RFID, Wireless, Security, Biometrics
- White papers 2006-01-17
- An Active Integrated Circuit Wireless Interference Cancellation Solution
- The nature of growth in the wireless communications industry dictates that networking radios will be increasingly collocated in both frequency and space. This potentially places the multiple functionalities of Wireless Personal Area Networks (WPANs) and Wireless Local Area Networks (WLANs) at the users disposal while maintaining the benefits of spectral...
- Tags: Georgia Institute Of Technology, Integrated Circuit, WLAN, Wireless LANs, Wi-Fi, LANs, Wireless, Networking
- White papers 2005-07-06
- Bandwidth and Power Efficiency Considerations for Optimal Training in OFDM
- Orthogonal Frequency Division Multiplexing (OFDM) has been adopted by many high speed transmission standards. Pilot Tone Assisted Modulation (PTAM) is a well known technique to estimate the Channel State Information (CSI) in OFDM but is not bandwidth efficient. To achieve high bandwidth efficiency, the paper proposes to carry out superimposed...
- Tags: Georgia Institute Of Technology, Bandwidth, Training, Pilot Tone Assisted Modulation, OFDM, Wireless
- White papers 2005-05-29
- Delay-Constrained Rate Adaptation for Robust Video Transmission Over Home Networks
- This paper considers rate adaptation for robust transmission of high-quality video over home networks, in particular IEEE 802.11 wireless LANs. The approach includes on-line estimation of the time-varying bandwidth available at the application-/transport-layer. The paper proposes a delay-constrained rate adaptation algorithm to select an optimal bit rate, subsequently enforced by...
- Tags: Georgia Institute Of Technology, Network, Home Network, Adaptation, Video, Corporate Communications, Marketing
- White papers 2005-05-11
- Bandwidth Estimation and Robust Video Streaming Over 802.11e Wireless LANs
- Streaming high quality Audio/Video (AV) from home media sources to TV sets over a Wireless Local Area Network (WLAN) is a challenging problem because of the fluctuating bandwidth caused by interference. The approach discussed in this paper is to adjust the video bit-rate dynamically in order to improve the experienced...
- Tags: Estimation, Georgia Institute Of Technology, Bandwidth, QoS, Streaming Video, WLAN, LANs, Web Site Development, Wireless LANs, Web Technology, Digital Video, Wi-Fi, Wireless, Networking, Internet, Personal Technology
- White papers 2005-04-30
- Approaching the Zero-Outage Capacity of MIMO-OFDM Without Water-Filling
- This paper shows that the full-blown water-filling procedure is not necessary to approach the zero-outage capacity of the MIMO-OFDM channel; it is sufficient instead to use a combination of eigenbeamforming and a fixed (nonadaptive) rate allocation. The fixed allocation requires no water-filling; instead, it allocates the rates deterministically to match...
- Tags: Georgia Institute Of Technology, Allocation, MIMO-OFDM
- White papers 2005-04-25
- Modeling and Optimization of Circularly-Polarized Patch Antennas Using the Lumped Element Equivalent Circuit Approach
- This paper describes the application of lumped element equivalent circuit approach to the modeling of a capacitive-loaded circularly-polarized microstrip patch antenna. This is achieved by using vector fitting to properly fit frequency domain scattering parameter data to a rational function approximation. Then, the parameter coefficients from the approximate function are...
- Tags: Method, Georgia Institute Of Technology, Optimization, Circuit, Modeling, Antenna, Research & Development, Bluetooth, Business Operations, Wireless
- White papers 2005-02-16
- Design and Development of a Miniaturized Embedded UHF RFID Tag for Automotive Tire Applications
- The utilization of UHF Radio Frequency IDentifcation (RFID) tag to monitor the tire history in automotive tire applications is presented in this paper. Three novel antenna designs are proposed and comparatively evaluated in terms of efficiency, size, read range limitations, and antenna-IC port matching. A prototype of a low-resistive high-inductive...
- Tags: Georgia Institute Of Technology, Tire, RFID, Wireless, Security, Biometrics
- White papers 2005-02-07
- Applying Design Methodology to PowerPoint
- PowerPoint presentations have become one of the most common communication tools in the business world. Most, if not all, professions use PowerPoint on a regular basis to, on the most basic level, inform an audience of an idea or set of ideas. PowerPoint presentations are notable because they typically involve...
- Tags: Georgia Institute Of Technology, Microsoft PowerPoint, PowerPoint Presentation, Microsoft Office, Office Suites, Software
- White papers 2004-08-23
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