A5100764532- Advanced Wireless Communication Techniques
- Advanced MIMO Systems Optimization
- Cooperative Communication and Network Coding
- Conducting polymers and applications
- Advanced Wireless Communication Technologies
- 3D IC and TSV technologies
- Analytical Chemistry and Sensors
- Semiconductor Lasers and Optical Devices
- Neuroscience and Neural Engineering
- Wireless Communication Networks Research
- Advanced Photonic Communication Systems
- Land Use and Ecosystem Services
- Catalysis and Hydrodesulfurization Studies
- Advanced Wireless Network Optimization
- Islamic Finance and Banking Studies
- PAPR reduction in OFDM
- Mobile Ad Hoc Networks
- Biodiesel Production and Applications
- Advanced Materials and Mechanics
- Advanced Optical Network Technologies
- Advanced Nanomaterials in Catalysis
- Environmental Sustainability in Business
- Interconnection Networks and Systems
- Gender Diversity and Inequality
- Smart Parking Systems Research
Hanoi University of Science and Technology
2012-2025
National Economics University
2024
Delft University of Technology
2003-2004
Hanoi University
2003
Abstract The purpose of this study was to determine the effects total mixed ration (TMR) based on alkaline-treated rice straw in a basal diet using soybean processing byproduct and dried brewer’s malt growth performance feed consumption Sindhi cross-bred cattle. A 36 cattle at 9 months age were randomly assigned four treatments 2 x factorial arrangement (feeding methods (FM): traditional feeding method (TF) as forages concentrate feeds fed separately versus TMR (TMR); (RST): untreated (UT)...
In this study, we present a novel approach to prepare of colorimetric chemical sensor for H2O2 and glucose biosensor basing on the use peroxidase-like activity silver nanoparticles decorated reduced graphene oxide sheets ([email protected]) nanocomposite. Herein, [email protected] nanocomposite was synthesized by one-step hydrothermal reducing method its physico-chemical properties were characterized X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), Ultraviolet–visible...
Closely spaced, through-wafer interconnects are of large interest in RF MEMS and packaging. In this paper, a suitable technique to realize arrays small size holes is presented. This approach based on macroporous silicon formation combination with wafer thinning. Very high aspect ratio (/spl ges/ 100) structures realized. The wafers containing the 2-3/spl mu/m wide thinned down 200-150/spl by lapping polishing. Copper electroplating finally employed Cu plugs.
This paper studies the spatial cross-correlation properties of 5G channel modeling simulator 2 × Multiple-input Multiple-output (MEMO) in NLOS Urban Micro Scenario (UMi) at 6 GHz frequency band. We determine that changing distance antenna elements spacings leads to vary correlation characteristics MIMO modelling, especially transmitter. implement distinct LDPC and Polar decoding algorithms investigate performance wide-band correlated Multiple input output Orthogonal Frequency Division Access...
Unmanned aerial vehicles (UAVs) are increasingly used in various applications, including infrastructure inspection, traffic monitoring, remote sensing, mapping, and rescue. However, many applications have required UAVs to function autonomously, without human intervention improve system performance. In this study, we propose a new approach environmental monitoring using group of equipped with sensors under the support reinforcement learning. Regarding communication model, assume that can...
For the functional modeling of complex biological processing structures with high-density 3D connections (such as visual cortex), we propose a simple multi-chip stack structure, through-chip and molecular wires between layers. We have designed fabricated two-chip stack, wiring materials been examined: chemically electrochemically grown conductive polymers. The next experimental stage will be to fabricate three-chip stack. calculated rate at which electrical signals can transmitted through...
This paper compares two types of channel modeling methods, which are the spatial (SCM) and Onering method. These well-known models proposed for 4G wideband mobile communication networks. To compare performance these we analyze properties spatial, temporal, frequency correlation functions simulated by using methods. The compared in same conditions antenna arrangements. simulation calculation results show that SCM very close to each other if BS MS arrays parallel perpendicular broadside MS-BS....
In this paper, we investigate the performance of a number spatial channel coding techniques, space time block (STBC), vertical-Bell Laboratories layered space-time (V-BLAST) coding, space-frequency (SFBC) on MIMO-OFDM system, and multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM), designed for long term evolution (LTE) downlink transmission. The is modelled based model (SCM) approach, which has been proposed in 3rd Generation Partnership Project (3GPP)...
This paper investigates the performance of Vertical Bell Laboratories Layered Space Time (V-BLAST) architecture for multi input output orthogonal frequency division multiple access (MIMO-OFDMA) system. VBLAST is a successive cancellation method applied to receiver obtain highest SNR. Performance MIMO systems in realistic radio environments greatly depends on spatial correlation due presence scatterers multipath propagation environments. The number users using system are also analyzed. It...
The landscapes in the Hinh River Basin are crucial and highly sensitive to climate change for coastal province of Phu Yen entire south-central region Vietnam, offering vital environmental services its downstream areas. has a rich system rivers streams abundant surface water resources. However, it remains one region's top localities at risk very vulnerable region. This study aims evaluate changes landscape (LC) over 10 years (2010-2023) predict LC next six using machine-learning (ML)...
Research in 3D interconnection technology involves the functional modeling of complex biological processing structures with high-density connections (such as visual cortex). We propose a simple multi-chip stack structure, through-chip and conducting polymer wires between layers. Self-assembled based on polypyrrole have been produced by directional electropolymerization process which permits volume patterning flexible substrates such polycarbonate filtration membranes gel designed fabricated...
Along with the development of Fiber-to-the-Home (FTTH) networks, Passive Optical Network (PON) is largely studied. PON technology known as optical access network that uses fiber optic and passive devices to connect service providers end users. Some models for deploying have been proposed. In this paper we focus on mesh star topology hybrid WDM-TDM PON. We propose three design methods two compare them each other in order see advantage topolgy links between AWGs. These are also compared...
In this paper, we consider a long-term evolution (LTE) system for the downlink by using multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) techniques. The channel is modeled socalled extended MIMO one-ring model. This model extends well-known narrowband with respect to selectivity. symbol error rate (SER) performance of LTE MIMO-OFDM investigated employing different kinds spatial encoders, where it assumed that state information (CSI) perfectly known. For...
This paper investigates the performance of spatial channel coding technique: a space-frequency block (SFBC) on multi input output orthogonal frequency division multiplexing access (MIMO-OFDMA) system in correlation stochastic model. The model is based (SCM) approach, proposed by 3 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rd</sup> Generation Partnership Project (3GPP) organization. symbol error rate (SER) MIMO systems multipath propagation...
In this paper, we apply different spatial channel coding techniques, such as the Space Time Block Coding (STBC), Vertical-Bell Laboratories Layered Space-Time (VBLAST), and Frequency (SFBC), to LTE downlink MIMO-OFDM transmission system. For purpose, use Spatial Channel Model (SCM) described in standard for case of Urban Microcell simulation model, which line sight (LOS) propagation is considered. Moreover, investigate impact correlation properties between transmitting receiving antennas on...
In this paper, a novel medium access control (MAC) protocol based on orthogonal frequency division multiple (OFDMA) technology operating in time duplexing (TDD) called MAC-TO for adhoc and multihop networks is proposed order to counteract mobility, co-channel interference (CCI), hidden terminals exposed nodes problems. method, the channel divided into sub-channels frequency, OFDM modulation then used every subchannel. addition, selectivity of assigned slots data transmission between...
This paper investigates the combination of codings on correlated channel in physical layer and dynamic allocation (DCA) algorithm MAC multi input output orthogonal frequency division multiplexing access (MIMO-OFDMA) system. Different spatial -- time/frequency techniques such as: space-frequency block coding (SFBC), space-time (STBC) cancelling interference as Vertical Bell Laboratories Layered Space Time (VBLAST) combined with an equalizer are deployed MIMO systems for comparison performance...
This paper showed the study results in hydrodeoxygenation process (HDO). Guaiacol and bio-oil derived from pyrolysis of waste microalgal biomass were deoxygenated an autoclave type reactor over FeSAPO-5 based catalyst – which has not been applied before for same purpose. The was prepared SAPO-5 by isomorphic introduction Fe3+ onto its framework. used as sample activity test followed applying HDO bio-oil. A series parameters investigated including temperature, period time, dosage stirring...