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Browsing Faculty of Engineering and Architecture (FEA) by Issue Date

Now showing items 1-20 of 796

Optimal uncoded regeneration for binary antipodal signaling

Abou-Faycal I.; Medard M. (, 2004)

We derive, for a binary antipodal input signal, the optimal uncoded regenerator function when the channels at the ingress and at the egress of the regenerator are degraded by AWGN. We show that the optimal function is a ...
Transient current testing of dynamic CMOS circuits

Aaraj N.; Nazer A.; Chehab A.; Kayssi A. (LOS ALAMITOS10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA, 2004)

We propose methods for testing dynamic CMOS circuits using the transient power supply current, iDDT. The methods are based on setting the primary inputs of the circuit under test, switching the clock signal and monitoring ...
TRUMMAR - A trust model for mobile agent systems based on reputation

Derbas G.; Kayssi A.; Artail H.; Chehab A. (, 2004)

In this paper we present TRUMMAR, a reputation-based trust model that mobile agent systems can use to protect agents from malicious hosts. TRUMMAR is unique in being a truly comprehensive model since it accounts, in a ...
A new method for computing the directivity of 4 Chebyshev and modified Chebyshev arrays

El-Hajj A.; Kabalan K.Y.; Al-Husseini M. (, 2004)

In this paper, a new method for exact calculation of the directivity of Chebyshev and modified Chebyshev arrays is presented. It makes use of Chebyshev polynomials and puts the integral in the denominator of the directivity ...
Natural language interface for mobile robot navigation control

Song I.; Guedea F.; Karray F.; Dai Y.; El Khalil I. (, 2004)

Natural language command is very abstract. On the other hand, a mobile robot command should be very specific with actual numbers. Thus natural language processing and robot navigation has a big gap. In our research, we ...
High-performance decoders for regular and irregular repeat-accumulate codes

Mansour M.M. (, 2004)

This paper investigates high-performance decoder design for regular and irregular repeat-accumulate (RA) codes of large block length. In order to achieve throughputs and bit-error rate performance that are inline with ...
The characteristic mode theory of the filed penetration into a cylindrical waveguide through rectangular aperture, TM case

Kabalan K.Y.; El-Hajj A.; Elias F. (, 2004)

The problem of aperture in conducting media has been widely considered in the literature. This problem addresses the case of an electromagnetic wave incident on a structure of conducting material segmenting space into two ...
Reconfigurable computing for RC6 cryptography

Itani M.; Diab H. (, 2004)

This paper presents an emerging reconfigurable hardware that potentially delivers flexible high performance for cryptographic algorithms. MorphoSys, a dynamic reconfigurable architecture that sustains implementations that ...
Assessment of energy efficiency options in the building sector of Lebanon

Chedid R.B.; Ghajar R.F. (OXFORDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2004)

This paper examines the merits of implementing energy efficiency policies in the building sector in Lebanon following the approach normally adopted in Climate Change studies. The paper first examines the impact of the ...
Transient current testing of dynamic CMOS circuits in the presence of leakage and process variation

Chehab A.; Kayssi A.; Nazer A.; Aaraj N. (, 2004)

We propose a method for testing dynamic CMOS circuits using the transient power supply current, iDDT. The method is based on setting the primary inputs of the circuit under test, switching the clock signal and monitoring ...
Analysis of MOS cross-coupled LC-tank oscillators using short-channel device equations

Mansour M.M.; Mansour M.M.; Mehrotra A. (, 2004)

New analytical techniques for estimating the large-signal periodic steady-state solution of MOS LC-tank oscillators using short-channel device equations are presented. These techniques allow us to make quantitative estimates ...
The characteristic mode theory of the field penetration into a cylindrical waveguide through a rectangular aperture, TE case

El-Hajj A.; Kabalan K.Y.; Elias F. (, 2004)

The problem of penetration into a cylindrical cavity through apertures was discussed. The characteristic mode theory was used to solve the aperture problem for a cylindrical conducting waveguide. The equivalence principle ...
Performance of rate compatible punctured turbo codes over AWGN channels

Kabalan K.Y.; El-Hajj A.; Choufani D. (, 2004)

The performance of turbo codes with short frame size of 320 bits with variable rate and constraint length of 4 and 5 of AWGN channel is investigated. Two encoders (13,15) and (37,21) with constraint length 4 and 5 were ...
Power allocation schemes for Pilot Symbol Assisted Modulation over Rayleigh fading channels with no feedback

Bdeir A.; Abou-Faycal I.; Medard M. (, 2004)

In communication over time-varying Rayleigh fading channels, adaptive coded modulation for Pilot Symbol Assisted Modulation (PSAM) without feedback has been shown to yield significant benefits in terms of achievable rates. ...
Specsa: A scalable, policy-driven, extensible, and customizable security architecture for wireless enterprise applications

Itani W.; Kayssi A. (AMSTERDAMPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2004)

This paper presents SPECSA, a new, optimized, policy-driven security architecture for wireless enterprise applications. SPECSA is scalable, extensible, flexible, and customizable. It supports end-to-end client authentication, ...
Computer-based laboratory for data communications and computer networking

Kayssi A.; Sharafeddine S.; Karaki H. (HOBOKEN111 RIVER ST, HOBOKEN, NJ 07030 USA, 2004)

Data communications and computer networking (DCCN) has established itself as an essential part of most computer science and engineering curricula, usually in the form of courses and-or laboratories. For reliable training ...
Periodic review (s, S) inventory model with permissible delay in payments

Maddah B.S.; Jaber M.Y.; Abboud N.E. (BASINGSTOKEBRUNEL RD BLDG, HOUNDMILLS, BASINGSTOKE RG21 6XS, HANTS, ENGLAND, 2004)

This paper investigates the effect of permissible delay in payments on ordering policies in a periodic review (s, S) inventory model with stochastic demand. A new mathematical model is developed, which is an extension to ...
Spreadsheet applications in electrical engineering: A review

Chehab A.; El-Hajj A.; Al-Husseini M.; Artail H. (DUBLINDUBLIN INST TECHNOLOGY, BOLTON ST, DUBLIN, IRELAND, 2004)

Spreadsheets were originally intended for business applications like finance, accounting, and so on. However, the ubiquity and simplicity of spreadsheet programs, in addition to their rich library of built-in functions, ...
Defuzzification methods and new techniques for fuzzy controllers

Saade J.J.; Diab H.B. (, 2004)

Based on the various components involved in the structure of fuzzy logic controllers, this study provides an in-depth examination of the different features and disadvantages of commonly used defuzzification methods. Then ...
Intelligent features within the J-sim simulation environment

Meskaoui N.; Gaiti D.; Kabalan K. (, 2004)

This paper presents our approach integrating a high level of intelligence within telecommunication networks. Artificial intelligence has proved its efficiency in resolving complex issues in different fields like air traffic ...

Now showing items 1-20 of 796

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Browsing Faculty of Engineering and Architecture (FEA) by Issue Date

Browsing Faculty of Engineering and Architecture (FEA) by Issue Date

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Copyright Statement