Results 101 to 110 of about 31,082 (236)

Suppressing Pilot Contamination in Massive MIMO Downlink via Cross-Frame Scheduling

IEEE Access, 2018
A novel downlink scheduling strategy for time-division duplexing massive multiple-input multiple-output networks is proposed to relieve the pilot contamination.
Zezhong Zhang, Yang Li, Rui Wang
doaj   +1 more source

A Novel Packet Scheduling Scheme for Downlink LTE System [PDF]

, 2013
Long term evolution (LTE) is the next generation wireless system. There are not many researches for LTE downlink scheduling. It uses orthogonal frequency division multiple access (OFDMA) in downlink. Until now, the goal for the LTE scheduler is achieving
Shih-Jung Wu, Wu, Shih-Jung, et al.
core  

Capacity and Error Performance of Reduced-Rank Transmitter Multiuser Preprocessing Based on Minimum Power Distortionless Response

, 2008
In this contribution we first derive a transmitter multiuser preprocessing (TMP) scheme for a general multiuser multiple-input-multiple-output (MIMO) system based on the minimum power distortionless response (MPDR) criterion, which minimizes the power in
Yang, Lie-Liang, Lie-Liang Yang
core   +1 more source

Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink

Tongxin xuebao, 2013
To suppress multi-user interference (MUI) and inter-cell interference (ICI) existing in multi-cell multi-user TDD MIMO downlink,an interference suppression algorithm through designing precoder was proposed.Firstly,a precoding matrix was designed for MUI ...
Zu-jun LIU, Jie-ling WANG, De-chun SUN, Ke-chu YI   +3 more
doaj  

MOBILE OPTICAL HIGH-SPEED DATA LINKS WITH SMALL TERMINALS

, 2009
Mobile Optical Free-Space Communication (MFSO) downlinks from observation platforms in low earth orbit or in the atmosphere will allow nearly undetectable high-speed data links with small and low-power laser communication terminals.
Giggenbach, Dirk, D. Giggenbach
core   +1 more source

Intelligent Energy Efficiency Maximization for Wirelessly-Powered UAV-Assisted Secure Sensor Network

Sensors
The rapid proliferation of Internet of Things (IoT) devices and applications has led to an increasing demand for energy-efficient and secure communication in wireless sensor networks.
Fang Xu, Xinyu Zhang
doaj   +1 more source

Soft handover issues in radio resource management for 3G WCDMA networks

, 2003
PhDMobile terminals allow users to access services while on the move. This unique feature has driven the rapid growth in the mobile network industry, changing it from a new technology into a massive industry within less than two decades.
Chen, Yue
core  

Generalised vector precoding design based on the MBER criterion for multiuser transmission

, 2010
A generalised vector precoding (VP) design based on the minimum bit error rate (MBER) criterion is proposed for multiuser transmission in the downlink of a multiuser system where the base station (BS) equipped with multiple transmit antennas communicates
W. Yao, S. Chen, Chen, Sheng, L. Hanzo, Hanzo, Lajos, Yao, Wang   +5 more
core   +1 more source

Optimized RSMA and NOMA Transmission in MIMO Downlinks With Quantized Channel Direction Information

IEEE Open Journal of the Communications Society
Channel state information is essential for optimizing transmit precoding in multiple-input multiple-output (MIMO) downlinks. This work assumes that only quantized channel direction information (CDI), representing the normalized channel vector, is ...
Kritsada Mamat, Wiroonsak Santipach
doaj   +1 more source

Deep learning for 1-bit compressed sensing-based superimposed CSI feedback

PLoS ONE, 2022
In frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems, 1-bit compressed sensing (CS)-based superimposed channel state information (CSI) feedback has shown many advantages, while still faces many challenges, such as ...
Chaojin Qing, Qing Ye, Bin Cai, Wenhui Liu, Jiafan Wang   +4 more
doaj