Results 121 to 130 of about 2,760 (289)

Design Of Two Step Deterministic Interleaver For Turbo Codes [PDF]

, 2008
The performance and design of a deterministic interleaver for short frame turbo codes is considered in this paper. The main characteristic of this class of deterministic interleaver is that their algebraic design selects the best permutation generator ...
Arif, M, Sheikh, NM, Sheikh, AUH
core  

Comparing Digital Reduction Guides and Free‐Hand Techniques for Predoctoral Crown Preparation Accuracy

Journal of Dental Education, EarlyView.
ABSTRACT Purpose/Objectives Insufficient tooth reduction compromises crown longevity and aesthetics. This study aimed to determine whether digitally designed, 3D‐printed reduction guides improved crown preparation accuracy and efficiency for dental students compared to freehand preparation.
Xiaoyue Shi, Shuncong Xu, Chenxuan Wei
wiley   +1 more source

SubDIVIDE: Efficient tensor‐valued diffusion magnetic resonance imaging via joint diffusional variance decomposition modeling and subspace reconstruction

Journal of Intelligent Medicine, EarlyView.
SubDIVIDE integrates a physics‐consistent DIVIDE subspace directly into MRI reconstruction. By embedding a low‐rank basis derived from a large DIVIDE signal dictionary into a joint ADMM optimization—together with composite sensitivity maps that absorb inter‐b‐value phase errors—the framework recovers quantitative microstructural maps from highly ...
Cheng Yang, Jingguo Yan, Zihan Zhou, Zhong Xue, Qiuyun Fan   +4 more
wiley   +1 more source

Interleaver design based on linear congruences for IDMA systems

, 2009
Criteria for a good interleaver design for IDMA include low memory requirement, easy generation, low correlation among interleavers, and low overhead for synchronization between user and base station.
Zhifeng Luo, Qiu, Shuisheng, Albert K. Wong, Shuisheng Qiu, Luo, Zhifeng, Wong, Albert K.   +5 more
core   +1 more source

Temporal dynamics of visual awareness and target detection revealed by EEG‐based univariate and multivariate analyses

Journal of Intelligent Medicine, EarlyView.
In this study, we combined univariate ERP analysis with multivariate decoding of EEG data to examine target detection and reported visual awareness in a near‐threshold visual task. The results revealed partly overlapping yet distinguishable temporal dynamics associated with the two processes.
Yichao Huang, Mingliang Liu, Yufeng Ke
wiley   +1 more source

Parallel concatenated block codes with flexible lengths and near-optimum performance

Information
The paper presents a modification of the interleaver used to construct Parallel Concatenated Block (PCB) codes with flexible lengths. This is accomplished for PCB codes whose interleaved message blocks have at most two bits of a message block.
Vijayasri Sundarapuram Soundayan, Sina Vafi   +1 more
doaj   +1 more source

Acute Effects of Smoking and Vaping on Markers of Vascular Function via Quantitative MRI

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background E‐cigarettes contribute to endothelial dysfunction, a known cause of systemic atherosclerotic disease that cannot be adequately characterized by a single physiological parameter measured at a single vascular bed. Purpose/Hypothesis Quantify and compare acute effects of smoking or vaping with tobacco cigarettes (t‐cigs), nicotinized ...
Marianne Nabbout, Mahdie Hosseini, Harris Quach, Michael C. Langham, Alessandra S. Caporale, Wensheng Guo, Kathryn Jaroszynski, Frank T. Leone, Andrew A. Strasser, Felix W. Wehrli   +9 more
wiley   +1 more source

Optimum twisting parameter for the DVB-T2 column-twist interleaver

, 2011
Channel coding is done by the use of BICM (Bit-Interleaved Coded Modulation) in the second generation digital terrestrial television broadcasting system (DVB-T2). In this transmission system, amodified block bit interleaver is introduced: the columntwist
Bette, Sébastien, Manneback, Pierre, Moeyaert, Véronique, Fremal, Sébastien, Boukesse, Maxime, Mégret, Patrice   +5 more
core   +1 more source

Pre‐Scan Breathing Pattern and Image Quality in Respiratory‐Triggered T2‐Weighted Liver MRI: Radial Versus Cartesian Fast Spin Echo

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Respiratory‐triggered T2‐weighted imaging (T2WI) may use rectilinear sampling (respiratory‐triggered fast recovery fast spin echo [RT‐FRFSE]) or radial sampling (periodically rotated overlapping parallel lines with enhanced reconstruction [PROPELLER]). Their relative performance across breathing patterns is unclear.
Ho Sung Park, Jimi Huh, Kyungmin Lee, Hyun Seung Lee, Hyesun Park, Kyung Won Kim, Jai Keun Kim   +6 more
wiley   +1 more source

An Adapted Block Interleaver Design for Interleave-Division Multiple Access Systems

, 2012
The Interleave-Division Multiple Access IDMA) system relies on interleaving as the onlymeans to separate users. In this paper, an adapted block interleaver is proposed for IDMA systems.
BİLİM, Mehmet, KAPUCU, Nuri, DEVELİ, İBRAHİM   +2 more
core   +1 more source