Zobrazeno 1 - 10
of 2 077
pro vyhledávání: '"Multi-antenna"'
Autor:
Eduard Tserne, Semen Zhyla, Anatoliy Popov, Dmytro Vlasenko, Denys Kolesnikov, Olha Inkarbaieva, Volodymyr Kosharskyi, Hlib Cherepnin
Publikováno v:
Радіоелектронні і комп'ютерні системи, Vol 2024, Iss 3, Pp 108-131 (2024)
The subject of this article is the design of a cheap, simple, and highly accurate on-board radar system for determining the angular position of radio-signal emission stations, which can be used to guide UAVs to a specified area of space. The aim of t
Externí odkaz:
https://doaj.org/article/43dcfe92c7e6485eb1dd6d46912b2bff
Publikováno v:
High-Confidence Computing, Vol 4, Iss 4, Pp 100223- (2024)
Millimeter-wave is the core technology to enable multi-Gbps throughput and ultra-low latency connectivity. But the devices need to operate at very high frequency and ultra-wide bandwidth: They consume more energy, dissipate more power, and subsequent
Externí odkaz:
https://doaj.org/article/8cfe43aac0c94032a24503695097e18d
Publikováno v:
IEEE Access, Vol 12, Pp 103450-103460 (2024)
In unmanned aerial vehicle (UAV) networks, introducing multiple-input/multiple-output (MIMO) technology brings promising capacity gains by exploiting spatial multiplexing. However, for UAV communications in urban scenarios, dense buildings block air-
Externí odkaz:
https://doaj.org/article/926b0608ff82494faf3ca7865b09cf48
Autor:
Jordi Borras, Gregori Vazquez
Publikováno v:
IEEE Access, Vol 12, Pp 82220-82234 (2024)
This work studies the impact of the array geometry on a space-time extension of a generalized class of null-space precoding format denoted as $\pi $ -waveforms (Projection-Invariant waveforms), which exhibit subspace invariance and robustness to subs
Externí odkaz:
https://doaj.org/article/8af738a8355c4b83b02ad197cbf4e31b
Publikováno v:
Ain Shams Engineering Journal, Vol 15, Iss 5, Pp 102688- (2024)
An intelligent detection of the communication channel by the transceiver is what is known as cognitive radio (CR), a sort of radio communication. Avoid using channels that are already in use to reduce interference and swiftly direct traffic to open c
Externí odkaz:
https://doaj.org/article/a20ccd54daf64f19868899e21bf7c76e
Autor:
Samer Alabed, Mohammad Al-Rabayah, Nour Mostafa, Zakwan Al-Arnaout, Eyad M. Hamad, Issam Maaz, Yehia Kotb
Publikováno v:
ICT Express, Vol 9, Iss 5, Pp 974-982 (2023)
In this article, an optimal beamforming technique using a low cost intelligent Rotman lens antenna is proposed. The proposed technique enjoys full diversity with high coding gain, has a very low encoding and decoding complexity, and does not require
Externí odkaz:
https://doaj.org/article/52c60e17c0f3407a85bc084e9c5441be
Autor:
Semen Zhyla, Eduard Tserne, Yevhenii Volkov, Sergey Shevchuk, Oleg Gribsky, Dmytro Vlasenko, Volodymyr Kosharskyi, Danyil Kovalchuk
Publikováno v:
Computation, Vol 12, Iss 9, p 170 (2024)
This manuscript focuses on the process of measuring the angular positions of radio sources using radio engineering systems. This study aims to improve the accuracy of measuring the angular positions of sources that radiate functionally determined sig
Externí odkaz:
https://doaj.org/article/6778e6b3f63f4c71a6b681e488dfa629
Autor:
Chuang Chen, Qi Zhu
Publikováno v:
Applied Sciences, Vol 14, Iss 16, p 7196 (2024)
Integrated sensing and communication (ISAC) systems assisted by unmanned aerial vehicles (UAVs) are susceptible to eavesdropping, making secure information transmission a critical area of research. We propose a joint optimization algorithm to improve
Externí odkaz:
https://doaj.org/article/82788f01f1684296954568c9482c034a
Autor:
Faizan Qamar, Syed Hussain Ali Kazmi, Khairul Akram Zainol Ariffin, Muhammad Tayyab, Quang Ngoc Nguyen
Publikováno v:
Information, Vol 15, Iss 8, p 442 (2024)
This comprehensive article explores the massive MIMO (M-MIMO) design and its associated concepts, focusing on the seamless integration requirements for Beyond 5G (B5G) and 6G networks. Addressing critical aspects such as RF chain reduction, pilot con
Externí odkaz:
https://doaj.org/article/130dc0bbb1b3486d854afcaef96556f7
Publikováno v:
Digital Communications and Networks, Vol 9, Iss 4, Pp 846-855 (2023)
Unmanned Aerial Vehicle (UAV) communication is a promising technology that provides swift and flexible on-demand wireless connectivity for devices without infrastructure support. With recent developments in UAVs, spectrum and energy efficient green U
Externí odkaz:
https://doaj.org/article/29e49b4636dc464c958800fd8023c911