Results 21 to 30 of about 423 (129)
A Coherent Performance for Noncoherent Wireless Systems Using AdaBoost Technique
Applied Sciences, 2019 Boosting is a machine learning approach built upon the idea of producing a highly precise prediction rule by combining many relatively weak and imprecise rules. The Adaptive Boosting (AdaBoost) algorithm was the first practical boosting algorithm.
Heba Gamal +4 more
doaj +1 more source
Applied Sciences, 2022 The simple and robust log-likelihood ratio (LLR) computation of coded Multiple Phase Shift Keying (MPSK) signals in Wireless Sensor Networks (WSNs) is considered under both phase noncoherent and Rayleigh fading channels for healthcare applications.
Bo Xie +4 more
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Noncoherent Multiuser Communications: Multistage Detection and Selective Filtering
EURASIP Journal on Advances in Signal Processing, 2002 We consider noncoherent multiuser detection techniques for a system employing nonlinear modulation of nonorthogonal signals. Our aim is to investigate near-optimum noncoherent multiuser-detection techniques that utilize the received signal structure ...
Yener Aylin, Yates Roy D, Sinha Rajnish
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Performance Analysis of Coherent and Noncoherent Modulation Under I/Q Imbalance Effects
IEEE Access, 2021 In this paper, we investigate the effects of in-phase/quadrature-phase imbalance (IQI) on the performance of different modulation schemes under multipath fading channels.
Bassant Selim +6 more
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IEEE Access, 2023 In this work, we consider a selective Detect-and-Forward (a symbol based decode-and-forward) (DetF) multi-relay two-way network employing differential MPSK with regularized Weighted Decision Feedback Differential Coherent (WDFDC) receivers.
Junqian Zhang, Harry Leib
doaj +1 more source
Differentially Encoded LDPC Codes—Part I: Special Case of Product Accumulate Codes
EURASIP Journal on Wireless Communications and Networking, 2008 Part I of a two-part series investigates product accumulate codes, a special class of differentially-encoded low density parity check (DE-LDPC) codes with high performance and low complexity, on flat Rayleigh fading channels.
Jing Li (Tiffany)
doaj +1 more source
Photonics, 2023 We propose an FSK/ASK orthogonal modulation system based on a novel noncoherent detection (NCD) scheme, aimed at expanding the system capacity for short-reach optical communications cost-effectively.
Lei Xin, Xiao Xu, Liuge Du, Jia Zhao
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Antimicrobial photodynamic therapy in Candida spp. biofilms: In vitro and in vivo protocols
Photochemistry and Photobiology, EarlyView.This review addresses the critical challenges in translating in vitro antimicrobial photodynamic therapy protocols to in vivo models, with a particular focus on the hurdles of standardization. The vast diversity in photosensitizers and light parameters across different target cells and models requires a rigorous optimization process.
Lívia Mara Alves Figueiredo‐Godoi +2 more
wiley +1 more source
Regularized WDFDC Receivers for Selective Detect-and-Forward Multi-Relaying Systems
IEEE Open Journal of Vehicular Technology, 2020 This article considers regularized Weighted Decision Feedback Differential Coherent (WDFDC) receivers for selective Detect-and-Forward multi-relaying systems, operating over fast fading channels. Non-regularized WDFDC receivers have been employed in such
Junqian Zhang, Harry Leib
doaj +1 more source
Long-Block Differential Spatial Modulation
IEEE Access, 2023 Spatial modulation (SM) can transmit additional data bits by selecting antennas and avoids synchronization and interferences among antennas. Differential SM (DSM) is a noncoherent technique of SM, but it is less bandwidth efficient than SM.
Ruey-Yi Wei +2 more
doaj +1 more source