Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Tianqing Zhou"'
Publikováno v:
Sensors, Vol 23, Iss 22, p 9064 (2023)
In this paper, in order to reduce the energy consumption and time of data transmission, the non-orthogonal multiple access (NOMA) and mobile edge caching technologies are jointly considered in mobile edge computing (MEC) networks. As for the cache-as
Externí odkaz:
https://doaj.org/article/ee5e73183ef744388028390d66a171de
Publikováno v:
IEEE Access, Vol 8, Pp 72971-72984 (2020)
The integration of massive multiple-input and multiple-output (MIMO) enabled heterogeneous cellular networks (HCNs) and Internet of Things (IoT) is a promising treatment for future networking paradigms. In such networks, the human-to-human (H2H) devi
Externí odkaz:
https://doaj.org/article/bebb5e582bb94b89bda518d624658d1b
Publikováno v:
IEEE Access, Vol 7, Pp 53018-53031 (2019)
In this paper, for the heterogeneous cellular networks (HCNs) with non-orthogonal multiple access (NOMA), we mainly concentrate on the design of green base station (BS) assignment integrating with power allocation. Note that the power allocation is m
Externí odkaz:
https://doaj.org/article/1bfe351ddc0b47e5a12c9a597d50f733
Publikováno v:
IEEE Access, Vol 7, Pp 121574-121585 (2019)
Recently, the node deployment problem of a relay network has brought a hot discussion. This paper studies utility function minimum maximization problem of bidirectional amplify and forward relaying systems from the perspective of relay deployment. Si
Externí odkaz:
https://doaj.org/article/df9b2101e63f40658ccf52a5168f1d1e
Publikováno v:
IEEE Access, Vol 7, Pp 141330-141342 (2019)
To fully utilize the system resources and enhance the user experience, two types of offloading mechanisms are designed for massive MIMO (multiple-input-multiple-out) enabled heterogeneous cellular networks (HCNs). Such mechanisms can achieve a tradeo
Externí odkaz:
https://doaj.org/article/ae10488cbcf947e590e92ee32c8d6ec6
Autor:
Dong Qin, Tianqing Zhou
Publikováno v:
The Journal of Engineering (2020)
This study deals with the error probability optimisation problem in three-phase bidirectional amplify and forward relaying systems. Different from the common two-phase strategy, in the three-phase counterpart, the relay power is split into two differ
Externí odkaz:
https://doaj.org/article/a543ab347fbc4b798107ff4c4debda2c
Publikováno v:
IEEE Access, Vol 6, Pp 1894-1904 (2018)
The densification of small cells in heterogeneous networks (HetNets) causes huge energy consumption and severe network interference. To fully exploit the potential of new network architecture, the cell selection (CS) in such HetNets should couple wit
Externí odkaz:
https://doaj.org/article/63e8c26f5cb349e699e090c30e29da04
Publikováno v:
IEEE Access, Vol 6, Pp 65308-65320 (2018)
In a cognitive radio network (CRN), connectivity is essential for the information exchange between secondary users (SUs). However, the unpredictable activities of primary users (PUs) may result in an unconnected network. Most of the existing works co
Externí odkaz:
https://doaj.org/article/f73804aa45444df5be2090ddd3864f09
Publikováno v:
Photonics, Vol 8, Iss 4, p 108 (2021)
This paper investigates the impact of cooperative spectrum sharing policy on the performance of hybrid radio frequency and free space optical wireless communication networks, where primary users and secondary users develop a band of the same spectrum
Externí odkaz:
https://doaj.org/article/354c3867d6534e1ca536bea0b4e73fc2
Autor:
Dong Qin, Tianqing Zhou
Publikováno v:
Sensors, Vol 20, Iss 7, p 2074 (2020)
This paper investigates two resource allocation problems in cognitive relaying networks where both secondary network and primary network coexist in the same frequency band and adopt orthogonal frequency division multiplexing (OFDM) technology. The fi
Externí odkaz:
https://doaj.org/article/2c3e85e221d94c9792fa0fa26bd991d6