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tools & techniques
(23148 results)-
White Papers
A Meta-Programming Technique for Debugging Answer-Set Programs
April 15, 2008 12:00am PDT
Answer-Set Programming (ASP) is widely recognised as a viable tool for declarative problem solving. However, there is currently a lack of tools for developing answer-set programs. In particular,...
Provided by: Association for the Advancement of Artificial Intelligence
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Whitepapers
Documenting Software Architecture, Part 1: What Software Architecture Is, and Why It's Important to Document It
April 15, 2008 12:00am PDT
Software architecture has increasingly become important for the development of complex real-time systems. In this new series, learn why and how one should document software architecture. One will...
Provided by: IBM
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White Papers
Content-Based Distortion Control Scheme for High-Quality Wireless Multimedia Services
April 15, 2008 12:00am PDT
In recent years, the wireless mobile markets are witnessing an unprecedented growth. High-quality video service will be greatly needed as one of the hottest wireless multimedia services in the...
Provided by: Hindawi Publishing
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White Papers
Type-Checking Zero-Knowledge
April 15, 2008 12:00am PDT
This paper presents the first type system for statically analyzing security protocols that are based on zero-knowledge proofs. The authors show how several properties offered by zero-knowledge...
Provided by: Saarland University
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White Papers
Selection Strategies for Peer-to-Peer 3D Streaming
April 15, 2008 12:00am PDT
In multi-user networked virtual environments such as Second Life, 3D streaming techniques have been used to progressively download and render 3D objects and terrain, so that a full download or...
Provided by: Association for Computing Machinery
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White Papers
Double Sampling for Flow Measurement on High Speed Links
April 15, 2008 12:00am PDT
Traffic measurement and monitoring are an important component of network QoS management and traffic engineering. With high speed Internet links, efficient and effective packet sampling techniques...
Provided by: Reed Elsevier
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Whitepapers
Apriori-LLR-Threshold-Assisted K-Best Sphere Detection for MIMO Channels
April 15, 2008 12:00am PDT
When the maximum number of best candidates retained at each tree search level of the K-Best Sphere Detection (SD) is kept low for the sake of maintaining a low memory requirement and computational...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Downlink Steered Space-Time Spreading For Multi-Carrier Transmission Over Frequency Selective Channels
April 15, 2008 12:00am PDT
This paper presents a novel amalgam of Steered Space-Time Spreading (SSTS) and Orthogonal Frequency Division Multiple Access (OFDMA) designed for attaining both spatial diversity gain and...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Radiation Footprint Minimization Using Encoded OFDM Pilots for Cognitive Radio Communications
April 15, 2008 12:00am PDT
The limited availability of spectrum and the inefficiency of its usage necessitate new research on spectral opportunistic communication technologies including Cognitive Radio (CR). Such new...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
A Low Complexity Null Subcarrier Aided Frequency Offset Estimation Technique for OFDM
April 15, 2008 12:00am PDT
In this paper, a novel scheme for the carrier frequency offset estimation in OFDM communication systems is proposed. While the conventional null subcarrier based methods estimate the offset by a...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Transmit Beamforming With Reduced Feedback Information in OFDM Based Wireless Systems
April 15, 2008 12:00am PDT
This paper considers a transmit beamforming scheme that works with reduced feedback information in OFDM based Multiple-Input Single-Output (MISO) wireless systems. The proposed scheme generates...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Error Rate Based SNR Estimation in the Railway Satellite Communication Environment
April 15, 2008 12:00am PDT
The potential of an SNR estimation technique for use in links subject to multipath propagation and periodic shadowing is investigated. The proposed SNR estimator relies on the bit error rate of...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
On the Stability of Adaptive Transmission System With Queue for Packet Communications Over Fading Channels
April 15, 2008 12:00am PDT
For effective transmission over fading channels, the adaptive transmission becomes promising. In particular, the Adaptive Modulation and Coding (AMC) can be used with known Channel State...
Provided by: Swansea University
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Whitepapers
A New Overloading Scheme for Cellular DS-CDMA Using Orthogonal Gold Codes
April 15, 2008 12:00am PDT
Overloading is a scheme to accommodate more users than the spreading factor N. This is a bandwidth efficient scheme to increase the number of users in a fixed bandwidth. One of the efficient...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Transmit Diversity for DS-CDMA/MMSE-FDE With Frequency-Domain ICI Cancellation
April 15, 2008 12:00am PDT
Frequency-Domain Equalization (FDE) based on the Minimum Mean Square Error (MMSE) criterion can provide a better Bit Error Rate (BER) performance than rake combining. However, the residual...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Phase Error Suppression for Multi-Band OFDM-Based UWB Systems
April 15, 2008 12:00am PDT
This paper proposes an efficient phase error suppression technique for multi-band Orthogonal Frequency Division Multiplexing (OFDM) based Ultra-WideBand (UWB) systems. The proposed scheme consists...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
On Parallelizing the CryptMT Stream Cipher
April 15, 2008 12:00am PDT
Fast stream ciphers are used extensively for encrypted data transmission in mobile networks and over multigigabit links. CryptMT, a recently proposed stream cipher, is one of the final candidates...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
On Reduced-Complexity Soft-Output Detection of Continuous Phase Modulations
April 15, 2008 12:00am PDT
The authors compare low-complexity schemes for soft-output detection of Continuous Phase Modulations (CPMs). In particular, they address the problem of minimizing the complexity of the front end...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
SAIC Based Iterative Receivers for MC-CDMA Cellular Systems
April 15, 2008 12:00am PDT
In this paper, the authors consider iterative detector/ receiver based on Single Antenna Interference Cancellation (SAIC) techniques for Multi-Carrier Code Division Multiple Access (MC-CDMA)...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Robust Transmit Multiuser Beamforming Using Worst Case Performance Optimization
April 15, 2008 12:00am PDT
The authors address the problem of transmits beamforming under channel uncertainties for a multiuser MIMO system, where both the transmitter and the receiver are equipped with multiple antennas....
Provided by: Institute of Electrical & Electronic Engineers
