Zobrazeno 1 - 10
of 23 025
pro vyhledávání: '"cdma"'
Publikováno v:
Sensors, Vol 24, Iss 21, p 6879 (2024)
This paper studies the performance of the communication link between a ground station and the satellites of a LEO constellation, employing code division multiplexing and a non-linear high-power amplifier. The analysis shows that the input power selec
Externí odkaz:
https://doaj.org/article/d7f6b278d65848aba1119fde982bfe9c
Autor:
Ridha Ilyas Bendjillali, Mohammed Sofiane Bendelhoum, Abderraouf Elarbi, Mohamed Rida Lahcene
Publikováno v:
Journal of Telecommunications and Information Technology, Vol 2, Iss 2 (2024)
Over the past decade, personal communications have witnessed exponential growth, fueled by the increasing number of connected users and the diversity of transmitted data types. This expansion necessitates a boost in the transmission systems' capacity
Externí odkaz:
https://doaj.org/article/c080c1b448e84a8488eccb09e959faa9
Publikováno v:
ENP Engineering Science Journal, Vol 3, Iss 2, Pp 10-14 (2023)
One of the schemes which are likely to be adopted in the forthcoming wireless communication standards is the so-called spatial modulation (SM). However, the wireless channels pertaining to such standards will mostly be frequency selective because of
Externí odkaz:
https://doaj.org/article/8a6811a172614366a35677dfa9daa32f
Autor:
V. P. Ipatov
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 26, Iss 5, Pp 6-20 (2023)
Introduction. Numerous modern infocommunication systems are based on the spread spectrum technology, i. e., on the use of signals with a large bandwidth-duration product. Many such systems implement discrete signals, which are sequences of standard p
Externí odkaz:
https://doaj.org/article/7f1f74bbaed94f739e884345288210bf
Publikováno v:
Tongxin xuebao, Vol 44, Pp 177-185 (2023)
To solve the problem of limited number of sequences in the mutually orthogonal complementary code set and high peak-to-average power ratio (PAPR) in MC-CDMA system, a construction of asymptotically optimal a periodic binary QCSS with low column vecto
Externí odkaz:
https://doaj.org/article/7d4314045c414423b2be6586b1c6e70d
Akademický článek
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Publikováno v:
Digital Communications and Networks, Vol 9, Iss 4, Pp 896-905 (2023)
Low Earth Orbit (LEO) satellite communications can provide global coverage in the sixth generation communication (6G) networks. To combat the strong Partial Band Interferences (PBIs) and multipath fading in LEO satellite communication systems, the Mu
Externí odkaz:
https://doaj.org/article/b5a7c785e6c04f159772e9d3e0629d4d
Autor:
Hayam A. Al-Yasiri
Publikováno v:
Journal of Engineering, Vol 10, Iss 1 (2024)
The emerging M-commerce (mobile +e-commerce) needs more support in operating systems in order to be successful over a wireless environment. The system needs to support a seamlessintegrati n to support voice, audio and conventional data. It should als
Externí odkaz:
https://doaj.org/article/243217795a9e410295315c50dc9a297f
Autor:
Eka Kusumawardhani, Rina Pudji Astuti, Nachwan Mufti Adriansyah, Fitri Imansyah, Leonardus Sandy Ade Putra
Publikováno v:
Positron, Vol 12, Iss 2, Pp 120-125 (2022)
The need for a communication system with a higher data rate and mobility grows along with information and communication technology development. Combining MC-CDMA with the MIMO system and supporting the system with a good transmit diversity technique
Externí odkaz:
https://doaj.org/article/e48824c786764463a089185805bc6daa
Publikováno v:
Радіоелектронні і комп'ютерні системи, Vol 0, Iss 1, Pp 101-111 (2023)
The subject matter of the article is to identify and equalize the parameters of telecommunication channels. The goal is to develop a new mathematical approach based on positive definite kernels on a Hilbert space. The tasks to be solved are: (a) to f
Externí odkaz:
https://doaj.org/article/a904485f94454e2a82f898a6554fe86e