Results 91 to 100 of about 323,225 (210)

Sonar beamforming based upon monaural localisation techniques [PDF]

, 1987
Includes bibliographies.Sonar beamforming is usually accomplished using a multi-element transducer array. To obtain high resolution, such a system is costly and complex. In contrast, many mammals are capable of good angular resolution using only a single
Tollman, Peter Alan
core   +1 more source

Multiuser downlink hybrid analog-digital beamforming with individual SINR constraints

, 2011
This paper deals with the problem of multiuser transmit hybrid analog-digital beamforming. Precisely, we tackle the problem of transmit power minimization under minimum signal-to-noise-plus-interference ratio (SINR) constraints.
Blanco, Luis, Vazquez, Miguel Angel, Pérez Neira, Ana Isabel   +2 more
core  

Beyond Codebook-Based Analog Beamforming at mmWave: Compressed Sensing and Machine Learning Methods [PDF]

, 2022
Analog beamforming is the predominant approach for millimeter wave (mmWave) communication given its favorable characteristics for limited-resource devices.
Luo, Tao, Yoo, Taesang, Behboodi, Arash, Kannan, Arumugam, Boroujeni, Mahmoud Taherzadeh, Li, Qiaoyu, Pezeshki, Hamed, Soriaga, Joseph B., Massoli, Fabio Valerio   +8 more
core  

Hybrid beamforming in RoF fronthauling for millimeter-wave radio

, 2017
In this paper we consider a centralized radio access network (C-RAN) architecture with a fully analog fronthaul link between remote antenna units (Raus) and baseband units (BBUs) based on the radio over fiber (RoF) paradigm.
Lorenzo Combi, Spagnolini, Umberto, Umberto Spagnolini, Combi, Lorenzo   +3 more
core   +1 more source

A Three-channel True-time delay Beamforming Analog Front-end

, 2014
Beamforming is a signal processing technique used in sensor arrays. After specific time delay, signal will be constructive interference or destructive interference.
Hsueh, Jen-Chieh, 薛人傑
core  

A Low-Cost Modular Transmit Front-End with Analog Beamforming Capability

, 2017
In this paper, we present a radio frequency (RF) transmitter front-end which can be used in analog beamforming applications. The proposed system is modular and can be used in different frequency bands.
Marcos V. T. Heckler, Heckler, Marcos Vinicio Thomas, Winterstein, Andreas, Lemes, Daniel Lima, Daniel Lima Lemes, Andreas Winterstein, Lemes, Daniel Lima;Heckler, Marcos V. T.;Winterstein, Andreas   +6 more
core   +1 more source

Low Complexity and Spectrally Efficient Photonic Hybrid Beamforming for 5G/6G Millimeter-Wave Systems

IEEE Access
In the future of 5G/6G wireless systems, microwave photonic signal processing will outperform conventional electronic techniques owing to its ultra-wide bandwidth (GHz to THz), low-loss fiber transmission, and tolerance to electromagnetic interference ...
Fekadu Mihret Geremew, Fanuel Melak Asmare   +1 more
doaj   +1 more source

Delay Alignment Modulation with Hybrid Analog/Digital Beamforming for Millimeter Wave and Terahertz Communications [PDF]

For millimeter wave (mmWave) or Terahertz (THz) communications, by leveraging the high spatial resolution offered by large antenna arrays and the multi-path sparsity of mmWave/THz channels, a novel inter-symbol interference (ISI) mitigation technique ...
Zeng, Yong, Yu, Xiangbin, Liang, Ying-Chang, Zhang, Jieni, Jin, Shi, Yuan, Jinhong, Zhang, Rui   +6 more
core   +1 more source

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