Results 21 to 30 of about 4,393 (215)
Multiuser hybrid analog/digital beamforming for relatively large-scale antenna arrays [PDF]
, 2013 Power consumption and costs of the analog front-end (AFE) chains are often not negligible for large-scale antenna array systems. A low-complexity hardware architecture is to use a number of AFE chains that is less than the number of the antennas ...
Xiang, Wei +9 more
core +1 more source
天地一体化信息网络, 2021 Due to the characteristics of low earth orbit (LEO) communication satellite system like low propagation loss, small propagation delay and high pointing accuracy, a hybrid architecture-“analog beamforming stage and digital beamforming (DBF) stage” was ...
Rong HU +6 more
doaj +2 more sources
Precision planter monitoring system based on mobile communication network
IET Networks, EarlyView., 2022 Abstract Sowing is an important link in agricultural production and the basis for ensuring high yields and bumper harvests. Agriculture requires precision plows with good performance and stable work. However, the seeding process is in a completely closed state, and the operator relies mainly on experience to judge the operating state and performance of
Bing Li, Jiyun Li
wiley +1 more source
Hybrid Beamforming for dual-polarized antenna [PDF]
2019 IEEE Wireless Communications and Networking Conference (WCNC), 2019 Recently, dual-polarized antenna has attracted strong attention in Millimeter wave (mmWave) systems. It provides an additional degree-of-freedom in wireless communication, yielding higher throughput. Nowadays, with the development of antenna technology, dual-polarized large scale antenna arrays can be realized inexpensively. However, several challenges
Dien-Hoa Truong +2 more
openaire +2 more sources
Complex-valued symmetric radial basis function network for beamforming [PDF]
, 2009 The complex-valued radial basis function (RBF) network proposed by Chen et al. (1994) has found many applications for processing complex-valued signals, in particular, for communication channel equalization and signal detection.
Sheng Chen, Chen, Sheng
core +1 more source
Cross-Mixing Hybrid Beamformer for Wideband Apertures [PDF]
IEEE Access, 2021 Existing beamforming arrays suffer from the size and cost of the RF front-end and digital back-end components. In this paper, a novel hybrid beamforming configuration for wideband receivers is introduced. The design replaces phase shifters and local oscillators (LO) with cross mixing antenna elements to maximize diversity gain.
Rimon Hokayem +3 more
openaire +3 more sources
Multi-user hybrid analogue/digital beamforming for relatively large-scale antenna systems [PDF]
, 2014 Power consumption and costs of analogue front-end (AFE) chains are often not negligible for large-scale antenna array systems. A low-complexity hardware architecture is to use a number of AFE chains that are less than the number of antennas.
Xiang, Wei +4 more
core +1 more source
Hybrid Beamforming for 5G and Beyond Millimeter-Wave Systems: A Holistic View
IEEE Open Journal of the Communications Society, 2020 Millimeter-wave (mm-wave) communication is a key technology for future wireless networks. To combat significant path loss and exploit the abundant mm-wave spectrum, effective beamforming is crucial.
Jun Zhang +2 more
doaj +1 more source
IEEE Access, 2023 In this paper, we investigate hybrid beamforming and resource allocation design problems for uplink millimeter wave (mmWave) multi-user (MU) massive multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems.
Hsin-Hsiang Tseng +2 more
doaj +1 more source
Multidimensional Radar Waveforms: A New Paradigm for the Design and Operation of Highly Performant Spaceborne Synthetic Aperture Radar Systems [PDF]
, 2007 This paper introduces and analyses the innovative paradigm of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Alberto Moreira +5 more
core +1 more source