Zobrazeno 1 - 10
of 403
pro vyhledávání: '"Zhang Xingqi"'
Publikováno v:
Chengshi guidao jiaotong yanjiu, Vol 27, Iss 12, Pp 176-181 (2024)
［Objective］The construction of shallow-buried pipe curtain structure may disturb the stratum and cause ground deformation. Therefore, it is necessary to study the influence of pipe curtain structure jacking sequence on land subsidence in order to
Externí odkaz:
https://doaj.org/article/a60992d73cdc4fc498ecb7cd33e124e1
Publikováno v:
Shuitu baochi tongbao, Vol 43, Iss 3, Pp 196-202 (2023)
[Objective] The water resource carrying capacity and appropriate population size of main provincial capitals in China were analyzed in order to provide a reference for implementing the policy of “determining population by water resources” and the
Externí odkaz:
https://doaj.org/article/6ef8a85bc62e4514b7f21ba6f98d10e8
The performance of linear receive beamforming in continuous aperture array (CAPA)-based uplink communications is analyzed. Continuous linear beamforming techniques are proposed for CAPA receivers under the criteria of maximum-ratio combining (MRC), z
Externí odkaz:
http://arxiv.org/abs/2411.06620
Autor:
Lang, Hans-Dieter, Nyffenegger, Michel A., Keller, Sven, Stöckli, Patrik, Hoffman, Nathan A., Mathis, Heinz, Zhang, Xingqi
Reconfigurable Intelligent Surfaces (RISs) can be designed in various ways. A previously proposed semidefinite relaxation-based optimization method for maximizing power transfer efficiency showed promise, but earlier results were only theoretical. Th
Externí odkaz:
http://arxiv.org/abs/2409.12758
The performance of multiplexing and diversity achieved by continuous aperture arrays (CAPAs) over fading channels is analyzed. Angular-domain fading models are derived for CAPA-based multiple-input single-output (MISO), single-input multiple-output (
Externí odkaz:
http://arxiv.org/abs/2408.13948
The secrecy performance in both near-field and far-field communications is analyzed using two fundamental metrics: the secrecy capacity under a power constraint and the minimum power requirement to achieve a specified secrecy rate target. 1) For the
Externí odkaz:
http://arxiv.org/abs/2408.10706
The capacity limits of continuous-aperture array (CAPA)-based wireless communications are characterized. To this end, an analytically tractable transmission framework is established for both uplink and downlink CAPA systems. Based on this framework,
Externí odkaz:
http://arxiv.org/abs/2406.15056
The concept of aperture selection is proposed for continuous aperture array (CAPA)-based communications. The achieved performance is analyzed in an uplink scenario by considering both line-of-sight (LoS) and non-line-of-sight (NLoS) scenarios. In the
Externí odkaz:
http://arxiv.org/abs/2405.16694
The performance of continuous aperture array (CAPA)-based wireless communications is analyzed in an uplink scenario. An analytical framework is proposed to characterize uplink CAPA-based transmission using electromagnetic field theories. On this basi
Externí odkaz:
http://arxiv.org/abs/2405.16690
The channel capacity of near-field (NF) communications is characterized by considering three types of line-of-sight multiuser channels: i) multiple access channel (MAC), ii) broadcast channel (BC), and iii) multicast channel (MC). For NF MAC and BC,
Externí odkaz:
http://arxiv.org/abs/2405.05387