Results 141 to 150 of about 5,087 (193)

Beamforming with Enhanced CNN Network

Proceedings of the 2017 VI International Conference on Network, Communication and Computing, 2017
In this paper, by exploiting the inherent similarity among the generalized cross correlation (GCC) pattern of the microphone arrays, a robust neural network for beamforming is proposed. To reduce the complexity, one-dimensional convolutional neutral network is taken into account to simplify the classification.
Kai Shu, Yanteng Wang, Guanghui Zhao
openaire   +1 more source

Network Beamforming in Energy-Harvesting Relay Networks

2019 IEEE/CIC International Conference on Communications in China (ICCC), 2019
In wireless-powered cooperative communication networks with multiple energy harvesting relays, relay selection has been the solution to exploit the cooperative diversity in the literature. In this paper, we propose to employ network beamforming (NB) in such networks to improve the source-to-destination capacity and reliability.
Dexin Wang, Rongqing Zhang 0001, Xiang Cheng 0001, Liuqing Yang 0001   +3 more
openaire   +1 more source

Telescopic beamforming for large wireless networks

2013 IEEE International Symposium on Information Theory, 2013
We consider a wireless network with n users distributed over a square area A = n. Under line-of-sight propagation, this network has Θ(√n) degrees of freedom. At high SNR, these degrees of freedom can be readily achieved by multi-hop relaying between nodes. At low SNR however, the performance is determined by the power transfer in the network.
Alla Merzakreeva, Olivier Lévêque, Ayfer Özgür   +2 more
openaire   +2 more sources

Terahertz beamforming network with a nonuniform contour

Applied Optics, 2022
This paper presents a terahertz beamforming network based on a nonlocal lens with a 2D beam-scanning demonstration through leaky-wave antennas. The proposed design methodology is novel, to the best of our knowledge, in the aspect of using unconventional optimization parameters to significantly reduce the phase error associated with this class of ...
Milad Hadei, Gholamreza Dadashzadeh, Yalda Torabi, Ali Lalbakhsh   +3 more
openaire   +2 more sources

Distributed Beamforming Using a Scattering Network

2010 8th Annual Communication Networks and Services Research Conference, 2010
Novel beam-forming methodology is proposedthat employs passive RF devices in order to enhance thereceived signal. This paper demonstrates the feasibility of suchbeamforming and the realization methodology for a randomlyplaced set of passive devices. Typically, a beamforming isrealized by employing an antenna array at a receiver ortransmitter.
Vikram Reddy Surendra, Maciej J. Zawodniok   +1 more
openaire   +2 more sources

Blind robust neural network beamformer

IJCNN'99. International Joint Conference on Neural Networks. Proceedings (Cat. No.99CH36339), 2003
Many blind beamforming algorithms, such as C-CAB, use the signal characteristics to estimate the steering vector. The conventional LCMV algorithm is then adapted to obtain the optimum solution. However, the LCMV-like methods are sensitive to the mismatch. In this paper, the cause of this mismatch is discussed in detail.
Yuxin Chen, Zhenya He
openaire   +2 more sources

Virtual Cell Beamforming in Cooperative Networks

IEEE Journal on Selected Areas in Communications, 2014
We study the coordinated transmission problem in cooperative cellular networks where a cluster of base stations forms a virtual cell to serve a mobile station (MS). The performance of such an MS-centric virtual cell network is dictated by the beamformer that enables to suppress interference; however, designing a beamformer is highly challenging due to ...
Kim, J Kim, Jihwan, Lee, HW Lee, Hyang-Won, Chong, S Chong, Song   +2 more
openaire   +2 more sources

On the Feasibility of Distributed Beamforming in Wireless Networks

IEEE Transactions on Wireless Communications, 2007
Energy efficient communication is a fundamental problem in wireless ad-hoc and sensor networks. In this paper, we explore the feasibility of a distributed beamforming approach to this problem, with a cluster of distributed transmitters emulating a centralized antenna array so as to transmit a common message signal coherently to a distant base station ...
Upamanyu Madhow, G Barriac
exaly   +3 more sources

Collaborative beamforming in wireless sensor networks

2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR), 2011
Collaborative beamforming (CB) is an energy efficient transmission scheme in wireless sensor networks (WSNs). Despite the promising aspects of CB, its practical implementation remains largely unexplored and the challenges, namely frequency, phase, and data synchronization, must be addressed for successful deployment.
Serkan Sayilir, Yung-Hsiang Lu, Dimitrios Peroulis, Y. Charlie Hu, Byunghoo Jung   +4 more
openaire   +2 more sources

Distributed Beamforming for Underwater Sensor Networks

Proceedings of the International Conference on Underwater Networks %Systems - WUWNET '14, 2014
We propose a binary-feedback-based distributed beamforming for underwater sensor networks (UWSNs). Distributed beamforming is a technique that enables distributed sensor nodes to cooperatively transmit signals in order to improve the signal-to-noise ratio (SNR).
Yonggang Kim, Hyuk Lim
openaire   +1 more source