Zobrazeno 1 - 10
of 250
pro vyhledávání: '"Van Duc NGUYEN"'
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-28 (2023)
Abstract In practical applications of passive sonar principles for extracting characteristic frequencies of acoustic signals, scientists typically employ traditional time-frequency domain transformation methods such as Mel-frequency, Short time Fouri
Externí odkaz:
https://doaj.org/article/b3c84ab9b8674dc4b9d444c0c22b4f93
Publikováno v:
IEEE Access, Vol 11, Pp 96603-96614 (2023)
Envisioned future wireless gives rise to the possibility of exploiting underwater applications with high spectral efficiency and reliable communication. This paper presents a method to combine channel estimation in the time domain with neural network
Externí odkaz:
https://doaj.org/article/dda30b7aa8f54151bff9081aa9c0d56c
Publikováno v:
IEEE Access, Vol 10, Pp 82788-82798 (2022)
The Doppler effect critically degrades the performance of orthogonal frequency division multiplexing (OFDM) systems in general. This problem is significantly worse for underwater acoustic (UWA) communication systems due to the distinct characteristic
Externí odkaz:
https://doaj.org/article/95a6fc05dd794b648365cb99aea50f42
Publikováno v:
Sensors, Vol 23, Iss 4, p 2190 (2023)
In this paper, we propose an algorithm for estimating the beam aperture of the acoustic transducers by using the geometric backscattering model for side-scan sonar systems. The geometric backscattering model is developed to describe the propagation p
Externí odkaz:
https://doaj.org/article/1bdd5afb80e04d83a222c7e5326b8255
Publikováno v:
Electronic Proceedings in Theoretical Computer Science, Vol 306, Iss Proc. ICLP 2019, Pp 280-294 (2019)
Motivated by the difficulty in presenting computational results, especially when the results are a collection of atoms in a logical language, to users, who are not proficient in computer programming and/or the logical representation of the results, w
Externí odkaz:
https://doaj.org/article/e4b750d9649f46588d73eaad5a7ceb6d
Autor:
Jin-Kyu Choi, Van Duc Nguyen, Hai Nam Nguyen, Van Vinh Duong, Tien Hoa Nguyen, Hanbyeog Cho, Hyun-Kyun Choi, Seong-Gyoon Park
Publikováno v:
Digital Communications and Networks, Vol 5, Iss 2, Pp 94-101 (2019)
This paper addresses the performance of fast doubly selective fading channel estimation combined with Inter-Carrier Interference (ICI) cancellation for Long Term Evolution (LTE) communication platform in the High Speed Railway (HSR) environment. We c
Externí odkaz:
https://doaj.org/article/85995042b2e045e694ea2cc6a657ff8c
Publikováno v:
IEEE Access, Vol 6, Pp 66293-66304 (2018)
This paper describes a nonorthogonal multiple access (NOMA)-based device-to-device (D2D) communication system underlaying in a cellular network sharing time and frequency resource. To optimize the total transmit power for all users in the network, we
Externí odkaz:
https://doaj.org/article/53e3a8d3e7704017ad20e01466192a59
Publikováno v:
IEEE Access, Vol 6, Pp 14462-14473 (2018)
In this paper, we consider the problem of power control and load balancing in the uplink of the cell-free (CF) multi-user (MU) massive multiple-input multiple-output system. The power control problem is solved using three different criteria: 1) power
Externí odkaz:
https://doaj.org/article/dfb2dd442cdb481ca6343c31db1e8b63
Autor:
Hanbyeog Cho, Tien Hoa Nguyen, Huu Nghia Nguyen, Hyun-Kyun Choi, Jin-Kyu Choi, Soonghwan Ro, Van Duc Nguyen
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2018, Iss 1, Pp 1-7 (2018)
Abstract High-speed railway communication implemented based on Long-Term Evolution-Railway (LTE-R) Platform has strict requirements for quality of services to support high data-rate transmission for numerous mobile users. In such environment, there o
Externí odkaz:
https://doaj.org/article/a63ccc72022947c0aaba2e7d6ec663fb
Publikováno v:
Sensors, Vol 21, Iss 14, p 4861 (2021)
Channel estimation plays a critical role in the system performance of wireless networks. In addition, deep learning has demonstrated significant improvements in enhancing the communication reliability and reducing the computational complexity of 5G-a
Externí odkaz:
https://doaj.org/article/c2c6f6401fe94900889a9a13c1ea122a