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(2151 results)-
White Papers
A Polarity Comparison Timing Synchronization Estimation for MB-OFDM Based UWB Systems
May 14, 2012 12:00am PDT
The authors propose a new approach for timing synchronization estimation with polarity comparison for Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM)- based UWB systems. They...
Provided by: Springer Science+Business Media
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White Papers
Computer Based Audio Steganography
May 5, 2012 12:00am PDT
People use cryptography to send secret messages to one another without a third party overseeing the message. Steganography is a type of cryptography in which the secret message is hidden in...
Provided by: Universal Association of Computer and Electronics Engineers
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White Papers
Application of LZW Technique for ECG Data Compression
May 5, 2012 12:00am PDT
The ECG is an electronic method of recording the heart beat of the patient. The characteristic of heart beat is determined by PQRST curve. By attaching additional leads while recording ECG signals...
Provided by: Universal Association of Computer and Electronics Engineers
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White Papers
Performance Analysis of FIR Filter in Frequency Domain and Time Domain for Wireless Communication System
May 5, 2012 12:00am PDT
This Paper gives design the methodology for implementation of FIR filter in the frequency domain and time domain. The filter coefficients for these two implementation are taken by sampling the...
Provided by: Universal Association of Computer and Electronics Engineers
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White Papers
Digital Radio Over Fiber Link to Overcome Impairments in Fiber Wireless Networks
May 1, 2012 12:00am PDT
In order to meet the ever increasing demand for larger transmission bandwidth, Wireless network based on radio-over-fiber technologies is a very beneficial solution. This architecture provides...
Provided by: IOSR Journal of Engineering
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White Papers
Optimal Sampling Strategies for Minimum Latency Routing With Imperfect Link State
April 20, 2012 12:00am PDT
Since dynamic wireless networks evolve over time, optimal routing computations need to be performed frequently on time-varying network topologies. However, it is often infeasible or expensive to...
Provided by: U.S. Army Research Laboratory
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White Papers
Modular Design of Jointly Optimal Controllers and Forwarding Policies for Wireless Control
April 17, 2012 12:00am PDT
The authors consider the joint design of forwarding policies and controllers for wireless control loops where sensor measurements are sent over an unreliable multi-hop wireless network to the...
Provided by: KTH Royal Institute of Technology
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White Papers
A Novel MCMC Algorithm for Near-Optimal Detection in Large-Scale Uplink Mulituser MIMO Systems
April 10, 2012 12:00am PDT
In this paper, the authors propose a low-complexity algorithm based on Markov Chain Monte Carlo (MCMC) technique for signal detection on the uplink in large scale multiuser Multiple Input Multiple...
Provided by: Indian Institute of Science
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White Papers
Credit Card Transaction Fraud Detection by Using Hidden Markov Model
April 1, 2012 12:00am PDT
This paper proposes a HMM (Hidden Markov Model) based fraud detection system for credit card fraud detection. The method works on the statistical behavior of user's transactions. Since the...
Provided by: International Journal of Scientific Engineering and Technology
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White Papers
Synchronization for IR-UWB System Using a Switching Phase Detector-Based Impulse Phase-Locked Loop
April 1, 2012 12:00am PDT
Conventional synchronization algorithms for impulse radio require high-speed sampling and a precise local clock. Here, a Phase-Locked Loop (PLL) scheme is introduced to acquire and track...
Provided by: ETRI Journal
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White Papers
Smooth Cepstrum Calculation Using Modified Bartlett Hanning Window
March 23, 2012 12:00am PDT
Cepstrum is an algorithm for analyzing the speech signals in frequency domain. This is conventional method of fundamental peak picking, i.e. fundamental frequency or pitch. For a speech signal it...
Provided by: Jaypee University of Information Technology
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White Papers
Isolating Failure-Inducing Combinations in Combinatorial Testing Using Test Augmentation and Classification
March 18, 2012 12:00am PDT
Combinatorial Testing (CT) is a systematic way of sampling input parameters of the Software Under Test (SUT). A t-way combinatorial test set can exercise all behaviors of the SUT caused by...
Provided by: North Carolina State University
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White Papers
Spread Spectrum Magnetic Resonance Imaging
March 13, 2012 12:00am PDT
The authors propose a novel compressed sensing technique to accelerate the Magnetic Resonance Imaging (MRI) acquisition process. The method, coined spread spectrum MRI or simply s2MRI, consists of...
Provided by: University of Lausanne
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White Papers
Magnitude Squared Coherence Based SCA
March 12, 2012 12:00am PDT
Magnitude Squared Coherence is a signal processing tool that indicates how well two time domain signals match one with the other by tracking linear dependencies in their spectral decomposition....
Provided by: International Association for Cryptologic Research
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White Papers
Multi-Rate Exact Discretization Based on Diagonalization of a Linear System - A Multiple-Real-Eigenvalue Case
March 3, 2012 12:00am PST
A multi-rate discrete-time model, whose response agrees exactly with that of a continuous-time original at all sampling instants for any sampling periods, is developed for a linear system, which...
Provided by: World Academy of Science, Engineering and Technology
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White Papers
Towards an Optimal Lifetime in Heterogeneous Surveillance Wireless Sensor Networks
March 1, 2012 12:00am PST
In this paper, the authors study the coverage problem for heterogeneous wireless sensor networks where different targets need to be covered (sensed) by different types of wireless sensors running...
Provided by: EURASIP
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White Papers
ANN Based Scheme to Predict Number of Zombies in a DDoS Attack
March 1, 2012 12:00am PST
A real time estimation of the number of zombies in DDoS attack scenario is helpful to suppress the effect of attack by choosing predicted number of most suspicious attack sources for either...
Provided by: Indian Institute of Technology Roorkee
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White Papers
Wavelet Based Artificial Neural Network Model of the Dynamics of Rational Map Having Poles
March 1, 2012 12:00am PST
In this paper, the authors have generated computer images from a C++ computer program and have then developed an artificial neural network model based on MAPE type of error from two samples of...
Provided by: IRPN Press
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White Papers
Dynamic Spectrum Detection Via Compressive Sensing
March 1, 2012 12:00am PST
Spectrum congestion is a major concern in both military and commercial wireless networks. To support growing demand for ubiquitous spectrum usage, Cognitive Radio is a new paradigm in wireless...
Provided by: Academy & Industry Research Collaboration Center
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White Papers
Generating Test Cases for Marine Safety and Security Scenarios: A Composition Framework
February 29, 2012 12:00am PST
In this paper, the authors address the problem of testing complex computer models for infrastructure protection and emergency response based on detailed and realistic application scenarios using...
Provided by: Springer
