Results 241 to 250 of about 47,016 (276)

Determination of automobile paint thickness using non-contact THz-TDS technique

2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2015
We use pulsed THz-TDS as a non-contact method for the measurement of thickness in automobile paint on a non-metallic substrate. We use a least square algorithm in order to fit the reflected pulses of each layer. Extracting the delay of each from the theoretical function allows us to know the thickness of each layer present in the system.
A. I. Hernandez-Serrano, E. Castro-Camus
openaire   +1 more source

An insight into tapioca and wheat starch gelatinization mechanisms using TD‐NMR and complementary techniques

Magnetic Resonance in Chemistry, 2022
Abstract To provide evidence for previously proposed assumptions concerning starch gelatinization sub‐mechanisms, a more detailed investigation was carried out using multiscale analysis of a starch type selected for its marked difference.
Rakhshi, Elham, Cambert, Mireille, Diascorn, Yves, Lucas, Tiphaine, Rondeau-Mouro, Corinne   +4 more
openaire   +4 more sources

Application of Smart Antenna Interference Suppression Techniques in TD-SCDMA Systems

2009 Sixth International Conference on Fuzzy Systems and Knowledge Discovery, 2009
The quality of mobile communications have been severely affected by interference among users in TD-SCDMA, in allusion to this problem, the smart antenna adaptive beam-forming algorithm are researched deeply in the thesis. According to the technical features that smart antenna can adaptive track the user signals realize the design and simulation of ...
Hong He, Ying He, Baofeng Zhang, Dajian Zhang, Yong Tian, Kexi Wang, Hui Meng, Mingfeng Hou   +7 more
openaire   +1 more source

Advanced FD-TD Techniques for the CAD of 3D Microwave Components

Electromagnetics, 2003
Advanced techniques for the finite difference time domain (FD-TD) method are described, which improve the efficiency of the simulation of three-dimensional (3D) microwave components, including structures of more general shape. The formulations are based on a combination of a direct subgrid technique with a locally conformal FD-TD algorithm for ...
FRITZ ARNDT, JAN RITTER
openaire   +1 more source

Iterative multiuser detection for TD-CDMA exploiting data estimate refinement techniques

Proceedings IEEE 56th Vehicular Technology Conference, 2003
An iterative multiuser detection scheme with data estimate refinement is presented and analyzed. Iterative multiuser detection with data estimate refinement can be looked at as an application of the general turbo principle. FEC coding with modulation and CDMA spreading can be considered as a serially concatenated code.
T. Weber, M. Meurer
openaire   +1 more source

Efficient simulation of high speed digital circuits using time adaptive FD-TD technique

25th European Microwave Conference, 1995, 1995
A technique is proposed for increasing the computational efficiency of a mixed-mode FDTD ciruit simulator. The FDTD algorithm is coupled to a set of equations which describes both linear and non linear lumped elements. The simulation time step is adaptively adjusted by monitorng the convergence of the Newton-Raphson procedure adopted for the non-linear
P Ciampolini, P Mezzanotte, L Roselli, R Sorrentino   +3 more
openaire   +1 more source

Anti-Collision RFID System Based on Combination of TD and Gold Code Techniques

Advanced Science and Technology Letters, 2015
Radio-frequency identification (RFID) communication system known as auto-id has experienced tremendous growth worldwide, considering as a flexible mechanism for identification of objects. Degradation of data transmission due to external interference and interference of RFID system itself (tags and reader collision) is one of the most important factors ...
Grishma Khadka, Tae-yun Kim, Suk-seung Hwang   +2 more
openaire   +1 more source

Comparative study of joint-detection techniques for TD-CDMA based mobile radio systems

IEEE Journal on Selected Areas in Communications, 2001
Third-generation mobile radio systems use time division-code division multiple access (TD-CDMA) in their time division duplex (TDD) mode. Due to the time division multiple access (TDMA) component of TD-CDMA, joint (or multi-user) detection techniques can be implemented with a reasonable complexity. Therefore, joint-detection will already be implemented
M. Vollmer, M. Haardt, J. Gotze
openaire   +1 more source

Simple and efficient space-time channel and DOA estimation techniques in TD-SCDMA systems

Journal of Electronics (China), 2006
In this paper, a simple method is presented for multi-user space-time channel estimation in Time Division-Synchronized Code Division Multiple Access (TD-SCDMA) systems. The method is based on a specific midamble assignment strategy, which results in a cyclic Toeplitz midamble-matrix in the linear equation of the received data vectors.
Ping’an Li, Ning Ma
openaire   +1 more source

Cancellation of motion artifacts in ambulatory ECG signals using TD-LMS adaptive filtering techniques

Journal of Visual Communication and Image Representation, 2019
Abstract Wearable electrocardiogram (ECG) measurement systems have been widely used in patients with CVD (Cardiovascular Disease) which can be worn in daily lives. However, currently the main problem is motion artifact interference, and reducing motion artifacts (MA) is one of the most challenging problems encountered in the filtering and processing ...
Fan Xiong, Dongyi Chen, Zhenghao Chen, Shumei Dai   +3 more
openaire   +1 more source