Zobrazeno 1 - 10
of 227
pro vyhledávání: '"Bangning Zhang"'
Publikováno v:
IET Communications, Vol 16, Iss 10, Pp 1025-1040 (2022)
Abstract This paper studies unmanned aerial vehicles (UAV) enabled industrial Internet of Things while a UAV dispatched to collect data of low‐power ground sensor nodes (SNs) in multi‐obstacle environment. The authors aim to minimize the completi
Externí odkaz:
https://doaj.org/article/c91d37522dfc479a96dc9fedeec0fe86
Publikováno v:
IET Communications, Vol 16, Iss 8, Pp 888-901 (2022)
Abstract In this study, the problem of estimating multiple frequency‐hopping (FH) signal parameters in situations in which random observations are missing is addressed. A uniform linear array (ULA) is utilized to receive FH signals, and the missing
Externí odkaz:
https://doaj.org/article/8e389a39ab2a4d08af84f1e459d572c8
Publikováno v:
Heliyon, Vol 9, Iss 4, Pp e15213- (2023)
The impacts of hydraulic fracturing (HF) on birth defects have been suggested by previous studies but remain largely inconclusive. In this study, we assessed whether pregnant women who lived in areas with high HF activities had increased risks of giv
Externí odkaz:
https://doaj.org/article/94c62b8d2cb746098821ae09d0e40bc7
Research Status of Space-air-ground Integrated Network and Application Prospects of New Technologies
Publikováno v:
天地一体化信息网络, Vol 2, Pp 19-26 (2021)
To achieve the demand of all-time all-area coverage of wireless communications, space-air-ground integrated network (SAGIN) is important systematic development direction with global coverage, optional reception, and proportional demand service, which
Externí odkaz:
https://doaj.org/article/0aa196386a70462da6e1ccc3a278f85b
Publikováno v:
International Journal of Antennas and Propagation, Vol 2022 (2022)
In this paper, a planar high-gain millimeter-wave (mmW) slotted substrate integrated waveguide (SIW) cavity antenna array with low sidelobe and grating lobe levels is proposed. The antenna consists of a slotted SIW resonator and an SIW transmission l
Externí odkaz:
https://doaj.org/article/eabdfd4d8bc541e08e173fb76f5a095a
Publikováno v:
IEEE Access, Vol 8, Pp 50399-50413 (2020)
As the increasing of both users' demand and the number of communication satellites, spectrum resource is becoming increasingly scarce. Cognitive radio (CR) can effectively alleviate the scarcity of spectrum resource. By using CR technology in the sat
Externí odkaz:
https://doaj.org/article/61dd1ccc56e9437ba4cfd192ea469039
Publikováno v:
IEEE Access, Vol 8, Pp 129446-129460 (2020)
Due to the increasing spectrum scarcity in satellite communications and terrestrial communications, cognitive satellite communications have received widespread attention. In this paper, we take the inherent feature that the terrestrial cognitive user
Externí odkaz:
https://doaj.org/article/88f7c9004c084e6489761261637e09f7
Publikováno v:
Sensors, Vol 22, Iss 21, p 8316 (2022)
With the standardization and commercialization of 5G, research on 6G technology has begun. In this paper, a new low-complexity soft-input–soft-output (SISO) adaptive detection algorithm for short CPM bursts is proposed for low-power, massive Intern
Externí odkaz:
https://doaj.org/article/a8801c19ef8d4f8e90b1f6f3c960221f
Publikováno v:
Sensors, Vol 22, Iss 18, p 6797 (2022)
A radio environment map (REM) is an effective spectrum management tool. With the increase in the number of mobile devices, the wireless environment changes more and more frequently, bringing new challenges to REM updates. Traditional update methods u
Externí odkaz:
https://doaj.org/article/6e2206e3d78f4b97b9768d738039458a
Publikováno v:
IEEE Access, Vol 7, Pp 57332-57340 (2019)
In this paper, we investigate the secure transmission in multigroup multicasting cell-free massive MIMO system in the presence of pilot spoofing attack. With the imperfect uplink and downlink channel estimation, a distributed conjugate beamforming pr
Externí odkaz:
https://doaj.org/article/63a8cf045a6440b5a7b1d4f185e3fb2e