Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Congzheng Han"'
Publikováno v:
Remote Sensing, Vol 16, Iss 17, p 3259 (2024)
An investigation is undertaken to explore a sudden quasi-linear precipitation and gale event that transpired in the afternoon of 30 May 2024 over Beijing. It was situated at the southwestern periphery of a double-center low-vortex system, where a moi
Externí odkaz:
https://doaj.org/article/3db3cb38c6d7480ca15a1b573ef6a82d
Publikováno v:
Digital Communications and Networks, Vol 9, Iss 1, Pp 47-55 (2023)
The huge increase in the communication network rate has made the application fields and scenarios for vehicular ad hoc networks more abundant and diversified and proposed more requirements for the efficiency and quality of data transmission. To impro
Externí odkaz:
https://doaj.org/article/eb92b7bdfda1425b906342fdb7b3c38a
Publikováno v:
IEEE Access, Vol 8, Pp 158402-158415 (2020)
In this article, the noncoherent detection scheme for the receiver in wireless sensor nodes is discussed. That is, an implementation-friendly and energy-efficient symbol-by-symbol detection scheme for IEEE 802.15.4 offset-quadrature phase shift keyin
Externí odkaz:
https://doaj.org/article/a02af161af404895904dd23db656f0ae
Autor:
Congzheng Han, Shu Duan
Publikováno v:
IEEE Access, Vol 7, Pp 113626-113641 (2019)
Millimeter waves have been recognized as carriers for 5G cellular networks. We carried out a series of millimeter-wave measurements in Beijing, China, and studied the atmospheric impacts on millimeter-wave transmission. Our measurement design is an e
Externí odkaz:
https://doaj.org/article/5e184daf2d93412cacd2a820b5be06a8
Publikováno v:
Remote Sensing, Vol 14, Iss 4, p 946 (2022)
We study the performance of water vapor monitoring using commercial millimeter-wave backhaul links from the fifth-generation cellular networks and smart cities. A 38 GHz link and an E-band link located in Gothenburg, Sweden, are used for analysis. On
Externí odkaz:
https://doaj.org/article/31c41dafd64748db9daeaed932a4401e
Publikováno v:
Applied Sciences, Vol 12, Iss 5, p 2330 (2022)
The simple and robust log-likelihood ratio (LLR) computation of coded Multiple Phase Shift Keying (MPSK) signals in Wireless Sensor Networks (WSNs) is considered under both phase noncoherent and Rayleigh fading channels for healthcare applications. W
Externí odkaz:
https://doaj.org/article/b3d489054bcb48528bce63af12626b15
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2018, Iss 1, Pp 1-10 (2018)
Abstract This paper focuses on a full-duplex (FD) two-way relay network with one base station (BS), one FD amplify-and-forward (AF) relay, and one user, and the BS is equipped with massive multiple-input multiple-output (MIMO) antennas. To reduce the
Externí odkaz:
https://doaj.org/article/4d42030c1534441eb16503c35db98984
Publikováno v:
Remote Sensing, Vol 13, Iss 22, p 4685 (2021)
A new dual-frequency Doppler polarimetric cloud radar (DDCR), working at 35-GHz (Ka-band radar, wavelength: 8.6 mm) and 94-GHz (W-band radar, wavelength: 3.2 mm) frequencies, has been in operation at Yangbajing Observatory on the Tibetan Plateau (Chi
Externí odkaz:
https://doaj.org/article/3360c755028c405bbf650fc0472526b2
Autor:
Congzheng Han, Liang Feng, Juan Huo, Zhaoze Deng, Gaoyuan Zhang, Baofeng Ji, Yushu Zhou, Yongheng Bi, Shu Duan, Renmin Yuan
Publikováno v:
Remote Sensing, Vol 13, Iss 11, p 2156 (2021)
Wireless communication has become a very important part of our lives, and it is well known that meteorological factors affect the quality of communication links, especially at higher frequencies because the physical dimensions of raindrops, hail ston
Externí odkaz:
https://doaj.org/article/5c15516cab554c14bb73bb83339df40f
Autor:
Siming Zheng, Congzheng Han, Juan Huo, Wenbing Cai, Yinhui Zhang, Peng Li, Gaoyuan Zhang, Baofeng Ji, Jiafeng Zhou
Publikováno v:
Sensors, Vol 21, Iss 5, p 1670 (2021)
Accurate rainfall observation data with high temporal and spatial resolution are essential for national disaster prevention and mitigation as well as climate response decisions. This paper introduces a field experiment using an E-band millimeter-wave
Externí odkaz:
https://doaj.org/article/7e2d88b3ad1e44a380c3f136443353ca