Results 21 to 30 of about 37,114 (119)

Downlink MBER transmit beamforming design based on uplink MBER receive beamforming for rank-deficient TDD-SDMA systems

, 2010
The downlink minimum bit error rate (MBER) transmit beamforming is directly designed based on the uplink MBER receive beamforming solution for time division duplex (TDD) space-division multiple-access (SDMA) induced multiple-input multiple-output (MIMO ...
Yang, Lie-Liang, Chen, Sheng
core   +1 more source

Kalman interpolation filter for channel estimation of LTE downlink in high-mobility environments [PDF]

, 2012
The estimation of fast-fading LTE downlink channels in high-speed applications of LTE advanced is investigated in this article. In order to adequately track the fast time-varying channel response, an adaptive channel estimation and interpolation ...
Dai, Xuewu, Zhang, W, Xuewu Dai, Dai, X, Yang, Y, Mitchell, JE, Yang, Yang, John E Mitchell, Xu, Jing, Jing Xu, Mitchell, John, Xu, J, Zhang, Wuxiong, Yang Yang, Wuxiong Zhang   +14 more
core   +2 more sources

Interventional Root‐Cause Analysis of Quality‐of‐Service Degradation in LEO Satellite‐User Assignment

International Journal of Network Management, Volume 36, Issue 5, September/October 2026.
ABSTRACT Operators of low Earth orbit (LEO) access networks increasingly diagnose quality‐of‐service (QoS) degradation with observational machine‐learning attribution, yet when the candidate causes are produced by the resource‐management policy itself, observational attribution is unsafe: it assigns the degradation to factors that an operator cannot ...
Edson José Pacheco, Carlos Marcelo Pedroso   +1 more
wiley   +1 more source

Overcoming the Phase Discontinuity Problem in RIS Optimization: A Robust and Scalable Phase‐Aware Deep Regression Framework via Hybrid CNN–LSTM Architecture

Advanced Intelligent Systems, Volume 8, Issue 9, September 2026.
The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen, Ali Çalhan, Murtaza Cicioğlu, Oğuzhan Demiryürek   +3 more
wiley   +1 more source

FedGATE: Topology‐Aware Personalized Federated Learning With Utility and Carbon‐Aware Scheduling for Mobile Traffic Prediction

Concurrency and Computation: Practice and Experience, Volume 38, Issue 18, September 2026.
ABSTRACT Accurate mobile traffic prediction is important for proactive resource allocation, congestion management, and service assurance in fifth‐generation and emerging sixth‐generation networks. Centralized deep‐learning approaches can provide strong forecasting performance but require raw traffic data to be transferred to a common server, creating ...
Muhammad Qasim, Muhammad Imran, Muhammad Ahmad Bilal, Adil Masood Siddiqui, Maryam Rasool, Muhammad Junaid Khan, Hassan Khan   +6 more
wiley   +1 more source

Variation of Venusian Gravity Wave Absolute Momentum Fluxes and Drag as Retrieved From the Akatsuki Mission

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Using temperature retrievals from Akatsuki radio occultation measurements, we characterize gravity wave activity as a function of vertical wavenumber and altitude. For the first time, we estimate the absolute horizontal momentum fluxes and the magnitude of the gravity wave drag (i.e., wave acceleration), assuming a horizontal wavelength of 300 
Erdal Yiğit, Emilia Sloan
wiley   +1 more source

Modulation-mode and power-assignment for SVD-and GMD-assisted downlink MIMO systems [PDF]

, 2010
Multiuser multiple-input multiple-output (MIMO) downlink (DL) transmission schemes experience both multiuser interference (MUI) as well as inter-antenna interference.
Ahrens, Andreas, Benavente Peces, César, Aust, Sebastian   +2 more
core  

Resource Allocation for Content Distribution Using Optimized Temporally‐Aware Adaptive Graph Convolutional Network in Fog Radio Access Networks

International Journal of Communication Systems, Volume 39, Issue 12, August 2026.
New multimedia applications are emerging at a rapid rate, propelling an exponential rise in mobile internet traffic and increasing the bar for next‐generation wireless networks in service quality. This indicates the rapid advancement of wireless communication technology.
Ruchi Kawatra, J. Brundha Elci, Maria Manuel Vianny D, Rajat Bhardwaj, Rakesh Kumar G, Abhijit Das   +5 more
wiley   +1 more source

Study on Analysis of Dispersion for TDM‐GPON System With Different Parameters

Engineering Reports, Volume 8, Issue 8, August 2026.
The workflow and simulated outcomes of a 32‐user bidirectional TDM‐GPON system simulated in OptiSystem 19 to evaluate the effects of optical fiber dispersion under various data rates, fiber lengths, and dispersion levels are shown in the graphical abstract.
Molla Belete Salelgne, Muhabaw Amare Alebachew, Amanuel Asrie Desalegn   +2 more
wiley   +1 more source

An Efficient Design for Robust Downlink Power Control Using Worst-case Performance Optimization [PDF]

, 2009
Downlink power control and beamforming designs in wireless system have been a recent research focus. To achieve reliable and efficient designs, good estimation of wireless channel knowledge is desired. However, the presence of uncertain channel knowledge
Li, Huiping
core