Results 101 to 110 of about 308,154 (181)

Low-resolution phase shifter-based hybrid precoding for mmWave massive MIMO

EURASIP Journal on Wireless Communications and Networking
As the demand for high-capacity and energy-efficient wireless communications grows, the exploration of cost-effective and power-optimized hybrid digital-analog beamforming techniques for millimeter-wave massive MIMO systems has gained substantial ...
Yipu Yuan, Jung-Lang Yu, Yuzhuo Pan, Shiyan Zheng   +3 more
doaj   +1 more source

RESEARCH ON BEAMFORMING TECHNIQUES IN 5G NETWORK

Tạp chí Khoa học
5G networks mark a significant advancement in telecommunications standards compared to 4G, offering data transmission speeds of up to 10 Gbps and are expected to be widely deployed shortly.
Hoang Van Thuc*, Doan Manh Cuong
doaj   +1 more source

Digital Beamforming and MIMO SAR: Review and New Concepts [PDF]

, 2012
Spaceborne Synthetic Aperture Radar (SAR) is a unique tool for large scale Earth observation, but the current generation of SAR sensors suffers from some fundamental limitations with regard to their imaging and mapping capabilities.
Villano, Michelangelo, Patyuchenko, Anton, Laskowski, Piotr, Huber, Sigurd, Bordoni, Federica, Moreira, Alberto, Younis, Marwan, Krieger, Gerhard, Kim, Junghyo, Rommel, Tobias, Lopez-Dekker, Paco   +10 more
core  

Minimum symbol error rate turbo multiuser beamforming aided QAM receiver

, 2008
This paper studies a novel iterative soft interference cancellation (SIC) aided beamforming receiver designed for high-throughput quadrature amplitude modulation systems communicating over additive white Gaussian noise channels.
Chen, Sheng, Tan, S, Hanzo, L
core   +1 more source

Weighted Sumrate Maximizing Hybrid Precoder for MU-MISO-OFDM

IEEE Access
In multi-antenna transceivers with all-digital beamforming, the number of radio frequency (RF) chains necessarily equals the number of antennas, which entails a large hardware complexity and power consumption when deploying large antenna arrays.
Sander Cornelis, Nele Noels, Marc Moeneclaey   +2 more
doaj   +1 more source

Alternating minimum mean square error hybrid beamforming algorithm in mmWave MIMO system

Dianxin kexue, 2017
The two-stage hybrid beamforming architecture can solve the problem of limited number of RF chains effectively.However,it is still difficult to design a hybrid beamforming algorithm with better performance.In order to achieve higher spectral efficiency ...
Min SHEN, Hao XU, Yun HE, Pengguang ZHOU
doaj   +2 more sources

Small Drone Detection Using Hybrid Beamforming 24 GHz Fully Integrated CMOS Radar

Drones
This paper presents a compact 24 GHz radar with a 4-transmit (4Tx) and 4-receive (4Rx) CMOS radar IC, integrated with a 4 × 4 Tx array and four 1 × 4 receive Rx array antennas, optimized for enhancing small drone detection.
Kangjie Jin, Seung-Soo Han, Donghyun Baek, Han Lim Lee   +3 more
doaj   +1 more source

Cost-Effective Digital Phased Array Systems With Automatic Self-Calibration: Case Studies With Analog and Hybrid Comparisons

IEEE Access
Low cost digital beamforming architectures are developed and comparisons are made to analog and hybrid arrays. A brief overview of these various beamforming methods is also provided considering phased array antennas.
Dagna I. Wojciak, Zain Shafiq, Alexander T. Don, Symon K. Podilchak   +3 more
doaj   +1 more source

Beamforming considerando difração acústica em superfícies cilíndricas [PDF]

, 2013
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2013.Beamforming é uma técnica de processamento de sinais já conhecida por suas aplicações em antenas e ...
Fonseca, William D'Andrea
core  

Maximizing mmWave Coverage: Deployment Strategies for Multiple NCRs

IEEE Access
This paper introduces a realistic coverage simulation model for network-controlled repeaters (NCRs) intended as a relay system designed to improve coverage in millimeter wave (mmWave) networks.
Yuki Sasaki, Jin Nakazato, Kazuki Maruta, S. B. Cha, Arokia Nathan   +4 more
doaj   +1 more source