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Browsing SOE - Scholarly Publications by Issue Date

Now showing items 41-60 of 840

Biomechanical Model of the Xylem Vessels in Vascular Plants

Karam, Gebran (2016-02-11)

• Background and Aims The xylem, or water transport system, in vascular plants adopts different morphologies that appear sequentially during growth phases. This paper proposes an explanation of these morphologies based on ...
Discussion of “Modeling Stiffness Degradation in Filamentary Composite Materials” by Robert M. Hackett and Kerry T. Slattery

Karam, Gebran (2016-02-11)
Discussion of “Compressive Behavior of Glass-Fiber-Reinforced Polymer Concrete” by S. Mebarkia and C. Vipulanandan

Karam, Gebran (2016-02-11)
Achievable diversity orders of decode-and-forward cooperative protocols over gamma-gamma fading FSO links

Abou-Rjeily, Chadi (2016-02-15)

In this paper, we consider the problem of relay-assisted free-space optical (FSO) transmissions with any number of relays. At a first time, we consider the quantum limited scenario and analyze the simple Decode-and-Forward ...
A Symbol-by-Symbol Cooperative Diversity Scheme for Relay-Assisted UWB Communications with PPM

Abou-Rjeily, Chadi (2016-02-15)

Email Print Request Permissions In this paper, we propose a novel cooperation strategy for coherent Impulse-Radio Ultra-Wideband (IR-UWB) communication systems with one relay. While non-orthogonal cooperation in narrow-band ...
Inter-relay cooperation

Abou-Rjeily, Chadi; Haddad, Serj (2016-02-15)

In this paper, we study the effect of the presence of inter-relay connections on the performance of cooperative free-space optical (FSO) networks. Unlike the existing literature where conventional cooperation in FSO systems ...
Performance Analysis of Selective Relaying in Cooperative Free-Space Optical Systems

Abou-Rjeily, Chadi (2016-02-15)

In this paper, we evaluate the performance of a selective-relaying (SR) protocol that is suitable for cooperative free-space optical (FSO) communications with any number of relays. The SR strategy is based on transmitting ...
All-active and selective FSO relaying

Abou-Rjeily, Chadi (2016-02-15)

In this paper, we study the impact of inter-relay cooperation on the outage performance of relay-assisted free-space optical (FSO) systems with two relays. Despite the fact that in realistic networks a FSO link might be ...
Power Allocation for Quantum-Limited Multihop Free-Space Optical Communication Systems

Abou-Rjeily, Chadi (2016-02-15)

In this paper, we propose two novel power allocation strategies for multihop Free-Space Optical (FSO) networks with any number of hops. These strategies correspond to the analytical solutions obtained from minimizing two ...
A 2x2 shape-preserving ST code for UWB communications with multipulse PPM

Abou-Rjeily, Chadi (2016-02-15)

Print Request Permissions In this paper, we consider the application of Multipulse Pulse Position Modulation (MPPM) as a power-efficient modulation scheme for Impulse-Radio Ultra-Wideband (IR-UWB) communications and we ...
Performance Analysis of UWB Systems over the IEEE 802.15.3a Channel Model

Abou-Rjeily, Chadi (2016-02-15)

In this paper, we propose an accurate method for evaluating the performance of Ultra-Wideband systems over the IEEE 802.15.3a channel model. Depending on the severeness of fading, the method consists of approximating the ...
Cooperative diversity for free-space optical communications

Abou-Rjeily, Chadi (2016-02-15)

In this paper, we investigate the cooperative diversity technique as a candidate solution for combating turbulence-induced fading over Free-Space Optical (FSO) links. In particular, a one-relay cooperative diversity scheme ...
Cooperative FSO systems

Abou-Rjeily, Chadi; Haddad, Serj (2016-02-15)

In this paper, we investigate the cooperative diversity technique as a candidate solution for combating turbulence-induced fading over free-space optical (FSO) links. In particular, we propose a novel cooperation strategy ...
On the Optimality of the Selection Transmit Diversity for MIMO-FSO Links with Feedback

Abou-Rjeily, Chadi (2016-02-15)

We propose an optimal power allocation strategy for Multiple-Input-Multiple-Output (MIMO) Free-Space Optical (FSO) links with Intensity Modulation (IM) and Direct Detection (DD). The optimization is performed for shot noise ...
Incorporating Uncertainty into the Estimation of the Passing Sight Distance Requirements

El Khoury, John; Hobeika, Antoine (2016-02-16)

Passing sight distance (PSD) is provided to ensure the safety of passing maneuvers on two lane two way roads. Many random variables determine the minimum length required for a safe passing maneuver. Current PSD design ...
Assessing the Risk in the Design of Passing Sight Distances

El Khoury, John; Hobeika, A. (2016-02-16)

Mostly, design methods in transportation engineering do not address the level of risk associated with the design and use of various highway elements. Passing sight distance (PSD) is an example of a highway operational ...
Pulse antenna permutation and pulse antenna modulation

Abou-Rjeily, Chadi (2016-02-16)

In this paper, we consider the problem of applying the Multiple-Input-Multiple-Output (MIMO) techniques on Impulse-Radio Time-Hopping Ultra-Wideband (IR-TH-UWB) communications. In particular, we propose two novel Space-Time ...
Unipolar space-time codes with reduced decoding complexity for TH-UWB with PPM

Abou-Rjeily, Chadi; Bkassiny, M. (2016-02-16)

In this paper, we consider the problem of space-time (ST) coding with unipolar pulse position modulations (PPM) and propose a novel ST code that satisfies a large number of construction constraints rendering it superior ...
On the Amplify-and-Forward Cooperative Diversity with Time-Hopping Ultra-Wideband Communications

Abou-Rjeily, Chadi; Daniele, N.; Belfiore, J.-C. (2016-02-16)

In this paper, we extend the Amplify-and-Forward cooperative diversity scheme to the context of impulse radio ultra wideband (IR-UWB). In particular, we present the construction of three families of minimal-delay and ...
Achieving full transmit diversity for PPM constellations with any number of antennas via double position and symbol permutations

Abou-Rjeily, Chadi; Baba, Z, (2016-02-16)

We present a general technique for constructing minimal-delay rate-1 Space-Time (ST) block codes for Pulse Position Modulations (PPM) with an arbitrary number of transmit antennas. We show that the novel idea of time-domain ...

Now showing items 41-60 of 840

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