Results 41 to 50 of about 1,983,376 (193)

Interference Management with Partial Uplink/Downlink Spectrum Overlap

, 2015
Simultaneous reuse of spectral resources by uplink and downlink, denoted as in-band full duplex (FD) communication, is promoted to double the spectral efficiency when compared to its half-duplex (HD) counterpart. Interference management, however, remains
Alouini, Mohamed-Slim, Dahrouj, Hayssam, Elsawy, Hesham, Randrianantenaina, Itsikiantsoa   +3 more
core   +1 more source

Wide-range tuning of the mechanical properties of TPMS lattice structures through frequency variation

Materials & Design, 2022
The dependence of structural performance on relative density limits the compliance of lattice structures with specified quality conditions and increases the time and cost required for selecting their configuration and part design.
Xiaohong Chen, Mingjin Hu, Yuanxi Sun, Jianxing Yang, Long Bai, Yan Xiong   +5 more
doaj   +1 more source

Meshing Characteristic Analysis of CBR Reducer Considering Tooth Modification and Manufacturing Error

Machines
The China Bearing Reducer (CBR) is a single-stage cycloid reducer with a compact structure, primarily used in high-precision fields such as robotic joints and Computer Numerical Control (CNC) machine tool turntables, where strict requirements for ...
Xiaoxiao Sun, Zhihao Qian, Yaochen Xu, Jiacai Huang   +3 more
doaj   +1 more source

Multidimensional Index Modulation in Wireless Communications

, 2017
In index modulation schemes, information bits are conveyed through indexing of transmission entities such as antennas, subcarriers, times slots, precoders, subarrays, and radio frequency (RF) mirrors.
Bhat, Sandeep, Chockalingam, A., Jacob, Swaroop, Shamasundar, Bharath   +3 more
core   +1 more source

Theoretical and Experimental Investigation of a Novel Wedge-Loading Planetary Traction Drive

Machines
The development of high-speed motors has stimulated the demand for high-speed reducers. In response to the lack of research on high-speed reducers and the challenge of developing high-speed transmission systems, this study proposes a novel wedge-loading ...
Yujiang Jiang, Guangjian Wang
doaj   +1 more source

A Novel Method for the Dynamic Coefficients Identification of Journal Bearings Using Kalman Filter

Sensors, 2020
The dynamic coefficients identification of journal bearings is essential for instability analysis of rotation machinery. Aiming at the measured displacement of a single location, an improvement method associated with the Kalman filter is proposed to ...
Yang Kang, Zhanqun Shi, Hao Zhang, Dong Zhen, Fengshou Gu   +4 more
doaj   +1 more source

Adjusting unit cell three-dimensional posture and mirror array: A novel lattice structure design approach

Materials & Design, 2022
Lattice structures’ performance is directly determined by the topological structure and arrangement of cells. Here, we propose a lattice structure design approach that generates predictable mechanical properties by adjusting the three-dimensional posture
Xiaohong Chen, Wenxin Ren, Yuanxi Sun, Junfang Zhang, Jianxing Yang, Ke Wang, Yu Gong, Zhiqing Zhang, Long Bai   +8 more
doaj   +1 more source

Performance of MB-OFDM UWB and WiMAX IEEE 802.16e converged radio-over-fiber in PON [PDF]

, 2009
Experimental results about the performance of converged radio-over- fiber transmission including multiband- OFDM UWB and WiMAX 802.16e wireless over a passive optical network are reported in this paper. The experimental study indicates that UWB and WiMAX
Beltran, Marta, Llorente, Roberto, Morant, Maria, Perez Soler, Joaquin   +3 more
core  

A two-dimensional transient fluid-thermal coupling method for temperature rising calculation of transformer winding based on finite element method

AIP Advances, 2020
In order to study the characteristics of the temperature variation in oil-immersed power transformer windings during operation, a two-dimensional transient fluid-thermal coupling calculation method for the transient temperature rising of transformer ...
Gang Liu, Shichang Rong, Weige Wu, Xiaohan Wang, Lin Li   +4 more
doaj   +1 more source

Fault Diagnosis of Planetary Gearbox Based on Adaptive Order Bispectrum Slice and Fault Characteristics Energy Ratio Analysis

Sensors, 2020
The vibration of a planetary gearbox (PG) is complex and mutually modulated, which makes the weak features of incipient fault difficult to detect. To target this problem, a novel method, based on an adaptive order bispectrum slice (AOBS) and the fault ...
Zhaoyang Shen, Zhanqun Shi, Dong Zhen, Hao Zhang, Fengshou Gu   +4 more
doaj   +1 more source