Results 71 to 80 of about 668,337 (217)

Beamforming Algorithm and System Optimization Based on True-Time-Delay and Phase Cooperative Control for Broadband Optically Controlled Phased Arrays

IEEE Photonics Journal
To address the contradiction between hardware non-idealities and broadband beam squint effects in microwave photonic beamforming systems, this paper proposes a beamforming algorithm framework based on true-time-delay and phase cooperative control.
Ting An, Limin Liu, Yunfeng Jiang, Yunjuan Zhang   +3 more
doaj   +1 more source

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

Genetic Algorithm Assisted Error Probability Optimisation for Beamforming

, 2004
A novel Genetic Algorithm (GA) assisted direct error probability optimisation technique is proposed for adaptive beamforming, which reduces the achievable error probability by nearly two orders of magnitude at a signal-to-noise ratio of 10dB in the ...
Wolfgang, A., Ahmad, N.N., Hanzo, L., Chen, S.   +3 more
core   +1 more source

Passive Beamforming Design for Double RIS-muMIMO System: A Machine Learning Perspective

IEEE Access
Multiple-input multiple-output (MIMO) and reconfigurable intelligent surfaces (RIS) enable network system designers to create intelligent, energy-efficient network systems.
M. Rezwanul Mahmood, Mohammad Abdul Matin, Sotirios K. Goudos   +2 more
doaj   +1 more source

Announcing a correspondence course on leadership : a project of the Virginia Cooperative Extension Service

, 1983
A brochure announcing a new correspondence course offered through the Cooperative Extension ...
Virginia Cooperative Extension Service
core  

Maximizing signal to leakage ratios in MIMO BCH cooperative beamforming scheme [PDF]

, 2019
Beamforming (BF) technique in cooperative multiple input multiple output (MIMO) antenna arrays improves signal to noise ratio (SNR) of the intended user. The challenge is to design transmit beamforming vectors for every user while limiting the co-channel
Rosdiadee Nordin, Al-Obaidi, Musaab, Mohammed Fadhil, Musaab Al-Obaidi, Fadhil, Mohammed, Mahamod Ismail, Abdullah, Nor Fadzilah, Ismail, Mahamod, Ciftlikli, Cebrail, Nor Fadzilah Abdullah, Cebrail Ciftlikli, Nordin, Rosdiadee   +11 more
core   +1 more source

A secure transmission method based on cooperative jamming for correlated main and wiretap channels

Dianxin kexue, 2021
A secure transmission method was proposed based on cooperative jamming to reduce the secrecy loss caused by the correlation between main and wiretap channels and to improve the secrecy.Considering that the existing methods of cooperative jamming focused ...
Sai XU, Shuai HAN, Weixiao MENG
doaj   +2 more sources

Virginia Cooperative Extension Volunteers: Extending Knowledge and Improving Lives Updates

, 2021
This is an informational brochure describing Virginia Cooperative Extension volunteer programs, and screening requirements for potential VCE volunteers ...
Proudfoot, Chad
core  

Beamforming method: suppression of spatial aliasing using moving arrays

, 2008
In the scientific and industrial community a growing interest is nowadays devoted to sound source localization techniques. Among all the existing methods, the use of the beamforming algorithm in sound source localization problems is increasing, thanks ...
LURATI M., RIPAMONTI F., VANALI, Marcello, CIGADA A   +3 more
core  

Toward connectivity of a disconnected cluster in partitioned wireless sensor network for time-critical data collection

International Journal of Distributed Sensor Networks, 2020
Reliable network connectivity is one of the major design issues in the context of wireless sensor networks. These networks have diverse communication patterns due to non-uniform sensing activities at various locations in the environment being monitored ...
Kashif Nasr, Noor Muhammad Khan
doaj   +1 more source