Results 11 to 20 of about 485,680 (303)
Energy-Efficient Adaptive Modulation and Data Schedule for Delay-Sensitive Wireless Communications
IEEE Access, 2020 In this paper, targeting at improving the energy efficiency (EE) for Quality-of-Service (QoS)-guaranteed wireless communications, we develop new adaptive modulation and data scheduling algorithms for delay-sensitive bursty data.
Qian Chen +4 more
doaj +1 more source
Loudness Adaptation with Modulated Stimuli [PDF]
Acta Acustica united with Acustica, 2015 © S. Hirzel Verlag • EAA. At low sensation levels, loudness adaptation is described as a decrease in loudness judgment over time of a steady, fixed-intensity auditory stimulus, presented monaurally. Similarly, at high sensation levels, loudness enhancement is described as an increase in loudness judgment over time.
Van Eeckhoutte, Maaike +2 more
openaire +1 more source
IEEE Photonics Journal, 2021 Continuous-variable quantum key distribution (CV-QKD) with a real local oscillator (LO) experiences a phase attack security challenge due to the reference pulses transmitted along with quantum signals over an unsecure quantum channel.
Khaled Alaghbari +4 more
doaj +1 more source
IEEE Access, 2021 A model of a cell of a communication network, divided into zones, with the dependence of the users’ service time on the zone, in which they are located, is considered. The arrival flow of users is defined by a marked Markovian process.
Chesoong Kim +3 more
doaj +1 more source
Adaptive bit Modulation equalizer
Journal of Physics: Conference Series, 2021 Abstract Multipath effects usually occur in information dissemination, which leads to inter-symbol interference and affects the quality of communication transmission. This paper uses an adaptive equalizer to achieve channel equalization and eliminate inter symbol interference, and develops and verifies it on the FPGA using the ISE suite.
Yabo Dong +5 more
openaire +1 more source
Performance Analysis of Dual-Hop DF Multi-Relay FSO System with Adaptive Modulation
Applied Sciences, 2023 The signal quality in high-bandwidth free space optical (FSO) systems deteriorates due to atmospheric turbulence and pointing errors. Employing techniques such as adaptive transmission and relay selection (RS) can mitigate their effects.
Wagdy Ameen Alathwary +1 more
doaj +1 more source
IEEE Photonics Journal, 2015 We proposed and experimentally demonstrated a wavelength-space division multiplexing (WSDM) optical access network architecture with centralized optical carrier delivery utilizing multicore fibers (MCFs) and adaptive modulation based on reflective ...
Zhenhua Feng +15 more
doaj +1 more source
Adaptive response and enlargement of dynamic range [PDF]
, 2011 Many membrane channels and receptors exhibit adaptive, or desensitized, response to a strong sustained input stimulus, often supported by protein activity-dependent inactivation.
A. Csik\'asz-Nagy +27 more
core +1 more source
Adaptive Wavelet Packet Modulation [PDF]
IEEE Transactions on Communications, 2018 In this paper, we propose a new adaptive modulation based on the wavelet packet transform, which targets a good resistance against frequency selective channels while avoiding a large PAPR. Classical multi-carrier modulation schemes divide the channel bandwidth into narrowband sub-channels to improve its robustness against frequency selective fading ...
Chafii, Marwa +3 more
openaire +3 more sources
Spectral efficiency of adaptive OFDM systems over high mobility Nakagami-m fading channels
Systems Science & Control Engineering, 2020 In this paper, we investigate the impact of rate and power adaptation (RPA) and rate adaptation (RA) using square M-ary quadrature amplitude modulation (MQAM) on the average spectral efficiency (ASE) of orthogonal frequency division multiplexing (OFDM ...
Xiuyan Zhang, Qiming Sun, Yan Gao
doaj +1 more source