Uplink impact analysis from TPC downlink enhancements
ICT Express, 2019 Slow downlink power control scheme of F-DPCH with TPC enhancements is reported to achieve the significant transmit power reduction in highly loaded cell scenario.
Gillyoung Jung, Yong Up Lee
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Enhanced Handoff Scheme for Downlink-Uplink Asymmetric Channels in Cellular Systems
The Scientific World Journal, 2013 In the latest cellular networks, data services like SNS and UCC can create asymmetric packet generation rates over the downlink and uplink channels. This asymmetry can lead to a downlink-uplink asymmetric channel condition being experienced by cell edge ...
Sunghyun Cho, Ji-Su Kim, Jae-Hyun Kim
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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
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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 +3 more
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Intelligent Energy Efficiency Maximization for Wirelessly-Powered UAV-Assisted Secure Sensor Network
SensorsThe 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
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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 +4 more
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Optimized RSMA and NOMA Transmission in MIMO Downlinks With Quantized Channel Direction Information
IEEE Open Journal of the Communications SocietyChannel 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
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A Starshot Communication Downlink
, 2020 Breakthrough Starshot is an initiative to propel a sailcraft to Alpha Centauri within the next generation. As the sailcraft transits Alpha Centauri at 0.2 c, it looks for signs of life by imaging planets and gathering other scientific data. After the transit, the 4.1-meter diameter sailcraft downlinks its data to an Earth-based receiver.
openaire +2 more sources
An Improved Algorithm for TD-LTE Downlink Time Synchronization
Dianxin kexue, 2015 Aimed at the application problem of timing synchronization algorithm in orthogonal frequency division multiplexing system, an improved algorithm for TD-LTE downlink time synchronization was proposed.
Wenle Bai +3 more
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A Polarity Reversion Elimination Method for LTE-Advanced Frequency Offset Estimation
Dianxin kexue, 2015 Traditional fractional frequency offset（FFO）estimation algorithm pay less attention to FFO polarity estimation.Noise and channel fading induced FFO estimation polarity reversion degrades the frequency synchronization performance inevitably.An efficient ...
Guoqing Jia +4 more
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