Results 31 to 40 of about 821,598 (312)

Cell Outage Detection and Compensation in Two-Tier Heterogeneous Networks

International Journal of Antennas and Propagation, 2014
Heterogeneous networks (HetNets) can increase network capacity through complementing the macro-base-station with low-power nodes, in response to the ongoing exponential growth in data traffic demand. While, unprecedented challenges exist in the planning,
Wenqian Xue, Hengzhi Zhang, Yong Li, Dong Liang, Mugen Peng   +4 more
doaj   +1 more source

Power minimization for GSIC-based uplink cell-free massive MIMO-NOMA systems

EURASIP Journal on Advances in Signal Processing, 2022
Non-orthogonal multiple access (NOMA) and multiple-input multiple-output (MIMO) are considered promising techniques to satisfy the demands for high spectrum efficiency and massive connectivity in future wireless communication.
Tao Cui, Chengcheng Liu, Peng Du, Rongfang Song   +3 more
doaj   +1 more source

Resource Allocation for Cognitive Satellite Communications Downlink

IEEE Access, 2018
Cognitive satellite communications (SatCom) is considered to be able to alleviate the bottleneck of spectrum resource shortage due to traditional spectrum allocation.
Peiliang Zuo, Tao Peng, Wangdan Linghu, Wenbo Wang   +3 more
doaj   +1 more source

New Gradient-Weighted Adaptive Gradient Methods With Dynamic Constraints

IEEE Access, 2020
Existing adaptive gradient descent optimization algorithms such as adaptive gradient (Adagrad), adaptive moment estimation (Adam), and root mean square prop (RMSprop), increase the convergence speed by dynamically adjusting the learning rate. However, in
Dong Liang, Fanfan Ma, Wenyan Li
doaj   +1 more source

A survey of localization in wireless sensor network [PDF]

, 2012
Localization is one of the key techniques in wireless sensor network. The location estimation methods can be classified into target/source localization and node self-localization. In target localization, we mainly introduce the energy-based method.
Ampeliotis D., Borras J., Brida P., Carsten Maple, Chen P. C., Chen Y., Chengdong Wu, Chia-Ho O., Deng K., Dong S., Erol M., Fujiwara R., Gezici S., Gogolak L., Goldenberg D. K., Hamouda Y. E. M., Hao Wu, Kaplan L. M., Kim W., Lee J., Long Cheng, Mengxin Li, Niu R., Qu X., Qu X., Shang Y., Silventoinen M. I., Suroso D. J., Venkatraman S., Wylie M. P., You C., Yunzhou Zhang, Zhu Y.   +32 more
core   +3 more sources

Bounds and Methods for Multiple Directional Sources Localization Based on RSS Measurements

IEEE Access, 2019
Source localization using RSS (received signal strength) measurements has received considerable attention recently. However, there are few works focusing on the problem of positioning multiple directional sources.
Tao Peng, Peiliang Zuo, Kangyong You, Hanbo Jing, Wenbin Guo, Wenbo Wang   +5 more
doaj   +1 more source

Algebraic Network Coding Approach to Deterministic Wireless Relay Networks [PDF]

, 2010
The deterministic wireless relay network model, introduced by Avestimehr et al., has been proposed for approximating Gaussian relay networks. This model, known as the ADT network model, takes into account the broadcast nature of wireless medium and ...
Kim, MinJi, Medard, Muriel
core   +4 more sources

Full-Duplex Mode in Amplify-and-Forward Relay Channels: Outage Probability and Ergodic Capacity

International Journal of Antennas and Propagation, 2014
This paper investigates the outage probability and ergodic capacity performances for full-duplex mode in two-way amplify-and-forward relay channels. The two-way relay channels which consist of two source nodes and a single relay node working in full ...
Rongyi Hu, Chunjing Hu, Jiamo Jiang, Xinqian Xie, Lei Song   +4 more
doaj   +1 more source

Real Time in Situ Remote Monitoring for Cladding Modified SMF Integrating Nanocomposite Based Ammonia Sensors Deploying EDFA

IEEE Access, 2021
The increased deployment of optical fiber sensors along with the development of internet of things has increased the demand for real-time in situ remote monitoring systems in the optical sensing industry.
Husam Abduldaem Mohammed, Muhammad Hafiz Abu Bakar, Siti Barirah Ahmad Anas, Mohd Adzir Mahdi, Mohd Hanif Yaacob   +4 more
doaj   +1 more source

AI Model Selection and Monitoring for Beam Management in 5G-Advanced

IEEE Open Journal of the Communications Society
This paper investigates the application of artificial intelligence (AI) to wireless technology, specifically in the context of beam management (BM) in the advanced 5th-generation (5G) communication system.
Chen Sun, Le Zhao, Tao Cui, Haojin Li, Yingshuang Bai, Songtao Wu, Qiang Tong   +6 more
doaj   +1 more source