Results 11 to 20 of about 188,879 (245)

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, Wouters, Jan, Francart, Tom   +2 more
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Analysis of the Capacity, Spectral Efficiency and Probability of Outage of Adaptive Mobile Channel for WiMAX System [PDF]

Engineering and Technology Journal, 2014
This paper presents an analysis of the channel capacity, spectral efficiency and probability of outage for the 4th generation adaptive modulation ofWiMAX system.
Hadi T. Ziboon, Wasan S. Rasheed
doaj   +1 more source

Adaptive Modulation Method of EON based on Deep Neural Network

Guangtongxin yanjiu, 2021
In order to maximize the total spectrum efficiency and improve the Quality of Experience (QoE) on Elastic Optical Network (EON), an adaptive modulation method based on Deep Neural Network (DNN) is proposed.
Jian-hua WANG, Yu-kun RAN, Jie ZHAO
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Algorithm based on 2‐bit adaptive delta modulation and fractional linear prediction for Gaussian source coding

IET Signal Processing, 2021
A novel 2‐bit adaptive delta modulation (ADM) algorithm is presented based on uniform scalar quantization and fractional linear prediction (FLP) for encoding the signals modelled by a Gaussian probability density function. The study focusses on two major
Zoran Peric, Bojan Denic, Vladimir Despotovic   +2 more
doaj   +1 more source

Deep Reinforcement Learning-Based Adaptive Modulation for Underwater Acoustic Communication with Outdated Channel State Information

Remote Sensing, 2022
Underwater acoustic (UWA) adaptive modulation (AM) requires feedback about channel state information (CSI) but the long propagation delays and time-varying features of UWA channels can cause the CSI feedback to be outdated.
Yuzhi Zhang, Jingru Zhu, Haiyan Wang, Xiaohong Shen, Bin Wang, Yuan Dong   +5 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, Hong Fan, Lin Ni, Zhaoli Shi, Ziwei Zhang, Hong Fan   +5 more
openaire   +1 more source

Multicore-Fiber-Enabled WSDM Optical Access Network With Centralized Carrier Delivery and RSOA-Based Adaptive Modulation

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, Borui Li, Ming Tang, Lin Gan, Ruoxu Wang, Rui Lin, Zhilin Xu, Songnian Fu, Lei Deng, Weijun Tong, Shengya Long, Lei Zhang, Hongyan Zhou, Rui Zhang, Shuang Liu, Perry Ping Shum   +15 more
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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, Palicot, Jacques, Gribonval, Rémi, Bader, Faouzi   +3 more
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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

Enhanced NOMA System Using Adaptive Coding and Modulation Based on LSTM Neural Network Channel Estimation

Applied Sciences, 2019
Non-orthogonal multiple access (NOMA) is the technique proposed for multiple access in the fifth generation (5G) cellular network. In NOMA, different users are allocated different power levels and are served using the same time/frequency resource blocks (
Mai AbdelMoniem, Safa M. Gasser, Mohamed S. El-Mahallawy, Mohamed Waleed Fakhr, Abdelhamid Soliman   +4 more
doaj   +1 more source