Results 231 to 240 of about 1,722,156 (269)

Adaptive Optical Processing for Wideband Hybrid Beamforming

IEEE Transactions on Communications, 2019
Multiuser centralized radio access networks (C-RANs) need to adapt to time-varying radio environments, and adaptation is advantageously split between remote antenna units (RAUs) and centralized baseband units (BBUs) to minimize the required fronthaul throughput.
Combi L., Spagnolini U.
openaire   +2 more sources

Hybrid Beamforming for Millimeter-Wave Massive Grant-Free Transmission

IEEE Transactions on Communications
The increasing demands for spectral resources in emerging massive machine-type communication applications necessitate the implementation of massive grant-free transmission in the millimeter-wave (mmWave) band.
Gang Sun, Xinping Yi, Wenjin Wang, Wei Xu, Shi Jin   +4 more
semanticscholar   +1 more source

Partially-Connected Hybrid Beamforming Design for Integrated Sensing and Communication Systems

IEEE Transactions on Communications, 2022
Beamforming design is an important technique for enhancing the performance of integrated sensing and communication (ISAC) systems. However, related research based on the hybrid analog-digital (HAD) architecture is still limited.
Xinyi Wang, Zesong Fei, J. A. Zhang, Jie Xu   +3 more
semanticscholar   +1 more source

Movable Antenna-Aided Hybrid Beamforming for Multi-User Communications

IEEE Transactions on Vehicular Technology
In this correspondence, we propose a movable antenna (MA)-aided multi-user hybrid beamforming scheme with a sub-connected structure, where multiple movable sub-arrays can independently change their positions within different local regions.
Yichi Zhang, Yuchen Zhang, Lipeng Zhu, Sa Xiao, Wanbin Tang, Y. Eldar, Rui Zhang   +6 more
semanticscholar   +1 more source

Robust beamforming method for SDMA with interleaved subarray hybrid beamforming

2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2016
This paper considers millimeter-wave access network systems with space division multiple access using an interleaved subarray hybrid beamforming structure, where antenna elements in each subarray scatter uniformly over the whole antenna array. The structure can provide high system capacity by multiplexing users in the space domain with narrow beams ...
Shunsuke Fujio, Chikara Kojima, Toshihiro Shimura, Kenichi Nishikawa, Kazuyuki Ozaki, Zhengyi Li, Atsushi Honda, Shohei Ishikawa, Takenori Ohshima, Hiroshi Ashida, Masahiko Shimizu, Yoji Ohashi   +11 more
openaire   +1 more source

Adaptive Hybrid Beamforming for UAV mmWave Communications Against Asymmetric Jitter

IEEE Transactions on Wireless Communications
Jittering effect is a critical issue in the unmanned aerial vehicle (UAV) millimeter wave (mmWave) communications. In this paper, we identify and characterize the asymmetric impact of jitter on the angular domain information in the UAV mmWave channels ...
Wenyun Chen, Chenxi Liu, Wei Wang, Mugen Peng, Wei Zhang   +4 more
semanticscholar   +1 more source

Hybrid Beamforming for Millimeter Wave Integrated Sensing and Communications

ICC 2023 - IEEE International Conference on Communications, 2023
The integrated sensing and communications (ISAC) system, which integrates radar sensing and communication into the same hardware platform, has been considered as one of the new paradigms for the sixth-generation wireless networks.
Jun Gong, Wenchi Cheng, Fangyuan Chen, Jiangzhou Wang   +3 more
semanticscholar   +1 more source

Sparse Array Enabled Near-Field Communications: Beam Pattern Analysis and Hybrid Beamforming Design

IEEE Transactions on Wireless Communications
Extremely large-scale arrays (XL-arrays) have emerged as a promising technology to enable near-field communications for achieving enhanced spectrum efficiency and spatial resolution, by drastically increasing the number of antennas.
Cong Zhou, Changsheng You, Haodong Zhang, Li Chen, Shuo Shi   +4 more
semanticscholar   +1 more source

Deployment and Robust Hybrid Beamforming for UAV MmWave Communications

IEEE Transactions on Communications, 2023
We deploy an unmanned aerial vehicle (UAV) equipped with a large-scale uniform planar array (UPA) to serve multiple ground users in millimeter-wave band.
Ke Liu, Yanming Liu, Pengfei Yi, Zhenyu Xiao, Xianggen Xia   +4 more
semanticscholar   +1 more source

Two-bit hybrid beamforming for broadcasting

2016 24th Signal Processing and Communication Application Conference (SIU), 2016
In this paper, a hybrid system consisting of analog and digital beamformers is proposed to reduce the hardware complexity of full digital beamforming. In analog beamforming part, specially chosen two-bit radio frequency (RF) phase shifters are used.
Özlem Tuğfe Demir, Temel Engin Tuncer
openaire   +1 more source