Results 21 to 30 of about 1,722,156 (269)
Deep Unfolding Hybrid Beamforming Designs for THz Massive MIMO Systems [PDF]
IEEE Transactions on Signal Processing, 2023 Hybrid beamforming (HBF) is a key enabler for wideband terahertz (THz) massive multiple-input multiple-output (mMIMO) communications systems. A core challenge with designing HBF systems stems from the fact their application often involves a non-convex ...
N. Nguyen +5 more
semanticscholar +1 more source
Multi-Satellite Cooperative Networks: Joint Hybrid Beamforming and User Scheduling Design [PDF]
IEEE Transactions on Wireless Communications, 2023 In this paper, we consider a cooperative communication network where multiple low-Earth-orbit (LEO) satellites provide services to multiple ground users (GUs) cooperatively at the same time and on the same frequency.
Xuan Zhang +4 more
semanticscholar +1 more source
Analog Beamformer Design for Interference Exploitation Based Hybrid Beamforming [PDF]
2018 IEEE 10th Sensor Array and Multichannel Signal Processing Workshop (SAM), 2018 Hybrid analog-digital beamforming has been shown to reduce hardware cost and power consumption in massive MIMO systems, at the expense of increased radiated power for given performance targets. To alleviate the above shortfall, in this paper we exploit the concept of constructive interference (CI) that has been shown to offer significant radiated power
Ganapati Hegde +2 more
openaire +1 more source
Hybrid Precoding Technique With Iterative Algorithm for MIMO-OFDM System
IEEE Access, 2020 This paper proposes a hybrid precoding technique based on multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system to improve bit error rate (BER) performance in hybrid beamforming system.
Seulgi Lee +4 more
doaj +1 more source
IEEE Access, 2021 In this paper, we consider the decode-and-forward (DF) relay system in millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems, and propose a hybrid beamforming design method for the mixed structure, which contains the fully ...
Meng Han +5 more
doaj +1 more source
Joint Phase-Time Arrays: A Paradigm for Frequency-Dependent Analog Beamforming in 6G
IEEE Access, 2022 Hybrid beamforming is an attractive solution to build cost-effective and energy-efficient transceivers for millimeter-wave and terahertz systems. However, conventional hybrid beamforming techniques rely on analog components that generate a frequency flat
Vishnu V. Ratnam +5 more
doaj +1 more source
Joint Communications and Sensing Hybrid Beamforming Design via Deep Unfolding [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2023 Joint communications and sensing (JCAS) is envisioned as a key feature in future wireless communications networks. In massive MIMO-JCAS systems, hybrid beamforming (HBF) is typically employed to achieve satisfactory beamforming gains with reasonable ...
N. Nguyen +5 more
semanticscholar +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
Hybrid Beamforming via the Kronecker Decomposition for the Millimeter-Wave Massive MIMO Systems [PDF]
, 2017 Despite its promising performance gain, the realization of mmWave massive MIMO still faces several practical challenges. In particular, implementing massive MIMO in the digital domain requires hundreds of RF chains matching the number of antennas ...
Huang, Kaibin +5 more
core +3 more sources
Hybrid beamforming and steering with reconfigurable arrays [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2010 Reconfigurable arrays offer an advantage over traditional ultrasound arrays because of their flexibility in channel selection. To improve ultrasound beamforming and coverage through beam steering, we propose a hybrid beamforming technique to elongate the depth of focus of transmit beams and a method of element selection that improves steering ...
Fong Ming, Hooi +3 more
openaire +2 more sources