Temat: digital beamforming - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Deep Learning-Powered Beamforming for 5G Massive MIMO Systems
Autorzy:: Bendjillali, Ridha Ilyas
Bendelhoum, Mohammed Sofiane
Tadjeddine, Ali Abderrazak
Kamline, Miloud
Powiązania:: https://bibliotekanauki.pl/articles/27312956.pdf
Data publikacji:: 2023
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: 5G
digital beamforming
hybrid beamforming
massive MIMO
ResNeSt
Opis:: In this study, a ResNeSt-based deep learning approach to beamforming for 5G massive multiple-input multipleoutput (MIMO) systems is presented. The ResNeSt-based deep learning method is harnessed to simplify and optimize the beamforming process, consequently improving performance and efficiency of 5G and beyond communication networks. A study of beamforming capabilities has revealed potential to maximize channel capacity while minimizing interference, thus eliminating inherent limitations of the traditional methods. The proposed model shows superior adaptability to dynamic channel conditions and outperforms traditional techniques across various interference scenarios.
Źródło:: Journal of Telecommunications and Information Technology; 2023, 4; 38--45
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Accurate Phase Calibration for Digital Beam-Forming in Multi-Transceiver HF Radar System
Autorzy:: Nguyen, H. Q.
Whittington, J. S.
Devlin, J. C.
Vu, H. L.
Vu, N. V.
Custovic, E.
Powiązania:: https://bibliotekanauki.pl/articles/227073.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: digital beamforming
phased array antenna
phase calibration
radar
transceivers
Opis:: The TIGER-3 radar is being developed as an “all digital” radar with 20 integrated digital transceivers, each connected to a separate antenna. Using phased array antenna techniques, radiated power is steered towards a desired direction based on the relative phases within the array elements. This paper proposes an accurate phase measurement method to calibrate the phases of the radio output signals using Field Programmable Gate Array (FPGA) technology. The method sequentially measures the phase offset between the RF signal generated by each transceiver and a reference signal operated at the same frequency. Accordingly, the transceiver adjusts its phase in order to align to the reference phase. This results in accurately aligned phases of the RF output signals and with the further addition of appropriate phase offsets, digital beamforming (DBF) can be performed steering the beam in a desired direction. The proposed method is implemented on a Virtex-5 VFX70T device. Experimental results show that the calibration accuracy is of 0.153 degrees with 14 MHz operating frequency.
Źródło:: International Journal of Electronics and Telecommunications; 2013, 59, 3; 245-254
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Digital Signal Processing Approach in Air Coupled Ultrasound Time Domain Beamforming
Autorzy:: Herman, K.
Gudra, T.
Furmankiewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/177033.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: beamforming
air-coupled ultrasounds
DSP
digital signal processing
bat signals
direction of arrival
Opis:: The work presents the results of experimental study on the possibilities of determining the source of an ultrasonic signal in two-dimensional space (distance, horizontal angle). During the research the team used a self-constructed linear array of MEMS microphones. Knowledge in the field of sonar systems was utilized to analyse and design a location system based on a microphone array. Using the above mentioned transducers and broadband ultrasound sources allows a quantitative comparison of estimation of the location of an ultrasonic wave source with the use of broadband modulated signals (modelled on bats’ echolocation signals) to be performed. During the laboratory research the team used various signal processing algorithms, which made it possible to select an optimal processing strategy, where the sending signal is known.
Źródło:: Archives of Acoustics; 2014, 39, 1; 37-50
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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