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SOE - Scholarly Publications: Recent submissions

  • On the Amplify-and-Forward Cooperative Diversity with Time-Hopping Ultra-Wideband Communications 
    Abou-Rjeily, Chadi; Daniele, N.; Belfiore, J.-C.; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • Orthogonal space-time block codes for binary pulse position modulation 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (2016-02-16)
    In this paper, we propose orthogonal Space-Time (ST) codes for binary Pulse Position Modulations (PPM). Unlike the well known orthogonal ST codes, the proposed schemes verify the additional constraint of achieving a full ...
  • Pulse antenna permutation and pulse antenna modulation 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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.; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • Achieving full transmit diversity for PPM constellations with any number of antennas via double position and symbol permutations 
    Abou-Rjeily, Chadi; Baba, Z,; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • Cooperative diversity for free-space optical communications 
    Abou-Rjeily, Chadi; SOE; 200701131; Civil Engineering; chadi.abourjeily@lau.edu.lb (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; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • A 2x2 shape-preserving ST code for UWB communications with multipulse PPM 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • Power Allocation for Quantum-Limited Multihop Free-Space Optical Communication Systems 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 Symbol-by-Symbol Cooperative Diversity Scheme for Relay-Assisted UWB Communications with PPM 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • Performance Analysis of Selective Relaying in Cooperative Free-Space Optical Systems 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering (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 ...
  • Achievable diversity orders of decode-and-forward cooperative protocols over gamma-gamma fading FSO links 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • All-active and selective FSO relaying 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • Inter-relay cooperation 
    Abou-Rjeily, Chadi; Haddad, Serj; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (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 ...
  • Serial Relaying Over Gamma-Gamma MIMO FSO Links 
    Abou-Rjeily, Chadi; Abdo, Alfred; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (2016-02-15)
    Serial relaying is analyzed in the context where the Free-Space Optical (FSO) communicating nodes are equipped with multiple apertures. We derive asymptotic expressions for the outage probability over the gamma-gamma fading ...
  • Distributed space-time codes for full-duplex IR-UWB amplify-and-forward cooperation 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (2016-02-15)
    In this paper, we consider the problem of full-duplex (FD) relaying in the context of impulse-radio ultra-wideband (IR-UWB) communications. In particular, we propose two novel distributed space-time block codes (STBCs) ...
  • Performance Analysis of FSO Communications With Diversity Methods 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (2016-02-15)
    This paper targets the performance analysis of multiple-input-multiple-output (MIMO) point-to-point single-aperture relay-assisted and MIMO relay-assisted free-space optical (FSO) communications. The objective of the paper ...
  • Unitary Space-Time Pulse Position Modulation for Differential Unipolar MIMO IR-UWB Communications 
    Abou-Rjeily, Chadi; SOE; 200701131; Electrical Engineering; chadi.abourjeily@lau.edu.lb (2016-02-15)
    In this paper, we present a general technique for constructing minimal-delay unitary differential Space-Time (ST) block codes for Pulse Position Modulation (PPM) with an arbitrary number of transmit antennas and signal set ...

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