2 citations · 3 across the 13 of their papers we have counts for
18 papers
RIS-Aided Physical Layer Security Improvement in Underlay Cognitive Radio Networks
Majid H. Khoshafa, Telex M. N. Ngatchede, Mohamed H. Ahmed
In this paper, a reconfigurable intelligent surface (RIS)-aided underlay cognitive radio network is investigated. An RIS is utilized to improve the secondary network (SN) reliabili…
Low-Complexity Detection of M-ary PSK Faster-than-Nyquist Signaling
Ebrahim Bedeer, Halim Yanikomeroglu, Mohamed Hossam Ahmed
Faster-than-Nyquist (FTN) signaling is a promising non-orthogonal physical layer transmission technique to improve the spectral efficiency of future communication systems but at th…
Joint Inter-flow Network Coding and Opportunistic Routing in Multi-hop Wireless Mesh Networks: A Comprehensive Survey
Somayeh Kafaie, Yuanzhu Chen, Octavia A. Dobre +1
Network coding and opportunistic routing are two recognized innovative ideas to improve the performance of wireless networks by utilizing the broadcast nature of the wireless mediu…
Performance Analysis of Network Coding with IEEE 802.11 DCF in Multi-Hop Wireless Networks
Somayeh Kafaie, Mohamed Hossam Ahmed, Yuanzhu Chen +1
Network coding is an effective idea to boost the capacity of wireless networks, and a variety of studies have explored its advantages in different scenarios. However, there is not…
FlexONC: Joint Cooperative Forwarding and Network Coding with Precise Encoding Conditions
Somayeh Kafaie, Yuanzhu Chen, Mohamed Hossam Ahmed +1
In recent years, network coding has emerged as an innovative method that helps a wireless network approach its maximum capacity, by combining multiple unicasts in one broadcast. Ho…
Network Coding Implementation Details: A Guidance Document
Somayeh Kafaie, Yuanzhu Peter Chen, Octavia A. Dobre +1
In recent years, network coding has become one of the most interesting fields and has attracted considerable attention from both industry and academia. The idea of network coding i…
Throughput Analysis of Network Coding in Multi-Hop Wireless Mesh Networks Using Queueing Theory
Somayeh Kafaie, Mohamed H. Ahmed, Yuanzhu Chen +1
In recent years, a significant amount of research has been conducted to explore the benefits of network coding in different scenarios, from both theoretical and simulation perspect…
Network Coding with Link Layer Cooperation in Wireless Mesh Networks
Somayeh Kafaie, Yuanzhu Chen, Mohamed Hossam Ahmed +1
In recent years, network coding has emerged as an innovative method that helps wireless network approaches its maximum capacity, by combining multiple unicasts in one broadcast. Ho…
Joint Optimization of Bit and Power Loading for Multicarrier Systems
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In this letter, a novel low complexity bit and power loading algorithm is formulated for multicarrier communication systems. The proposed algorithm jointly maximizes the throughput…
Constrained Joint Bit and Power Allocation for Multicarrier Systems
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
This paper proposes a novel low complexity joint bit and power suboptimal allocation algorithm for multicarrier systems operating in fading environments. The algorithm jointly maxi…
Optimal Bit and Power Loading for OFDM Systems with Average BER and Total Power Constraints
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In this paper, a novel joint bit and power loading algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments. The algorit…
A Novel Algorithm for Joint Bit and Power Loading for OFDM Systems with Unknown Interference
Ebrahim Bedeer, Mohamed F. Marey, Octavia A. Dobre +2
In this paper, a novel low complexity bit and power loading algorithm is formulated for orthogonal frequency division multiplexing (OFDM) systems operating in fading environments a…
A Novel Algorithm for Rate/Power Allocation in OFDM-based Cognitive Radio Systems with Statistical Interference Constraints
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In this paper, we adopt a multiobjective optimization approach to jointly optimize the rate and power in OFDM-based cognitive radio (CR) systems. We propose a novel algorithm that…
Rate-Interference Tradeoff in OFDM-based Cognitive Radio Networks
Ebrahim Bedeer, Octavia A. Dobre, Mohamed H. Ahmed +1
In cognitive radio (CR) networks, secondary users (SUs) are allowed to opportunistically access the primary users (PUs) spectrum to improve the spectrum utilization; however, this…
Energy-Efficient Power Loading for OFDM-based Cognitive Radio Systems with Channel Uncertainties
Ebrahim Bedeer, Osama Amin, Octavia A. Dobre +2
In this paper, we propose a novel algorithm to optimize the energy-efficiency (EE) of orthogonal frequency division multiplexing-based cognitive radio systems under channel uncerta…
A Two-Phase Power Allocation Scheme for CRNs Employing NOMA
Ming Zeng, Georgios I. Tsiropoulos, Animesh Yadav +2
In this paper, we consider the power allocation (PA) problem in cognitive radio networks (CRNs) employing nonorthogonal multiple access (NOMA) technique. Specifically, we aim to ma…
Reduced Complexity Optimal Detection of Binary Faster-than-Nyquist Signaling
Ebrahim Bedeer, Halim Yanikomeroglu, Mohamed Hossam Ahmed
In this paper, we investigate the detection problem of binary faster-than-Nyquist (FTN) signaling and propose a novel sequence estimation technique that exploits its special struct…
A Very Low Complexity Successive Symbol-by-Symbol Sequence Estimator for Faster-than-Nyquist Signaling
Ebrahim Bedeer, Mohamed Hossam Ahmed, Halim Yanikomeroglu
In this paper, we investigate the sequence estimation problem of binary and quadrature phase shift keying faster-than-Nyquist (FTN) signaling and propose two novel low-complexity s…