We propose herein to make use of rotating electric fields for achieving flexible control on the hydrodynamic behavior two miscible co-flowing water solutions in straight microchannels, context a new manipulation tool stratified liquid contents microfluidic systems. Our theoretical analysis indicates that, while fluids distinct electrical conductivities and identical permittivity are parallel pumped into mainchannel, circularly traveling field, as emitted from four-phase electrode array...

Based on the continuum mechanics theory, we propose herein a universal design of microfluidic ionic diode based external concentration polarization gating ion-selective medium embedded in network with four power terminals. This micro/nanofluidic hybrid chip employs cation-exchange nanoporous membrane (CEM) coupled both control and output channel. Under action vertical electric field throughout CEM, nanoscale surface conduction excessive counterions within charged nanopores is converted to...

This letter investigates the joint estimation of direction departure (DOD) and arrival (DOA) for multi-input multi-output (MIMO) radar systems. A novel method based on non-uniform array configuration is proposed practical identifiability corresponding parameter analyzed. The key idea to use Doppler diversity construct a virtual MIMO array. Through theoretical proof, we demonstrate that can provide much stronger than conventional ones, also improve performance. Numerical simulations verify...

We put forward herein a unique physical mechanism of multifrequency electrothermal (MET) induced flow, in the context brand-new manipulation tool for liquid and colloid mixtures microfluidic systems. Since characteristic operating frequencies standing-wave (SWET) traveling-wave (TWET) convection are far from each other, cross product charge wave with local electrical field another oscillation frequency always time-averages to zero. For this reason, we make use paradigmatic dual-frequency...

We proposed herein a unique method of insulator-decorated bipolar electrochemistry (IDBE), for realizing large-scale separation bioparticles in microchannels driven by AC dielectrophoresis (DEP). In IDBE, pair planar driving electrodes is placed at the bottom channel sidewalls, between which an array rectangular floating electrode (FE) strips without external Ohmic contact are evenly spaced along transversal direction, and series insulating dielectric blocks periodically deposited above all...

Massive multiple-input multiple-output system can enable multi-stream transmission for high spectrum efficiency, which is a key technology in future 5G cellular networks. In this paper, we degenerate direction of arrival (DOA) related 2-D weighted subspace fitting function into two independent parameterized 1-D versions. Based on this, develop novel DOA estimation algorithm, be utilized to assist performing downlink precoding. Furthermore, also make an analysis the computational complexity...

Immediate and accurate detection of foreign metal objects (FMOs) in clothing products is important for guaranteeing human safety. This article proposes an online approach based on deep learning, which suitable detecting small FMOs from X-ray images packages. A conveyor belt scanning system developed image collection. The are preprocessed by using the morphological erosion operation to improve accuracy detection. These then down-sampled reduce computation cost. Feature pyramid network (FPN)...

This is a summary of bigger report based on the results arrived at New Orleans data base design workshop. paper outlines four major areas design. It discusses important issues, some which have been achieved and future research problems.

In this paper, we propose a Doppler pre-compensation scheme for high-mobility orthogonal frequency division multiplexing (OFDM) uplink, where high-speed terminal transmits signals to the base station (BS). Considering that time-varying multipath channel consists of multiple offsets (DFOs) with different angle departures (AoDs), perform DFO at transmitter large-scale uniform linear array (ULA). The transmitted signal passes through beamforming network high- spatial resolution produce parallel...

The simulation study of particle damping in microgravity or zero-gravity environments is carried out using the Discrete Element Method this paper. results show that particles have a reasonable performance only when container almost fully filled with and at large displacement amplitude. damper will little effect because come together form floating cluster middle container, if vibration amplitude less than half gap between bed ends container. To break cluster, cross-shaped spoiler introduced...

This letter investigates a novel two-stage cooperative scheme to secure the communication system with one source, destination and multiple helpers. Herein, source mixes confidential messages interferences transmitted by helpers destination. Since serve suppress interferences, can acquire an interference-free signal, however eavesdropper is still confused. achieve positive secrecy rate even when eavesdropper's channel much better than legitimate link, only requires local state information...

In this paper, we address the problem of distributed angle estimation in wireless sensor localization system. Given that practical limitations on size and cost, i.e., anchor node cannot equip a complicated antenna or array, devise an alternative measure based fixed-spacing two-antenna equipment. Through multiple frequencies tuning, virtual non-uniform linear called synthetic array (MFSA), can be rebuilt independently at each node. We first provide theory unambiguity conditions for such then...

Abstract We report herein field‐effect control on in‐phase electrothermal streaming from a theoretical point of view, phenomenon termed “alternating‐current electrothermal‐flow field effect transistor” (ACET‐FFET), in the context new technology for handing analytes microfluidics. Field‐effect through gate terminal endows ACET‐FFET ability to generate arbitrary symmetry breaking transverse vortex flow pattern, which makes it attractive mixing microfluidic samples. A computational model is...

In this paper, we consider the problem of determining direction arrival (DOA) two sources for a coprime array. The novelty paper is that present an efficient algorithm to estimate DOAs from their wrapped phases with errors. proposed robust generalized Chinese remainder theorem considerably less computational complex than searching method while maintaining comparable estimation precision. Moreover, largest range DOA leads unambiguous determination obtained given Numerical simulations are...

In this paper, we propose a new blind carrier frequency offset (CFO) estimation method for multiuser orthogonal division multiplexing (OFDM) uplink transmissions. The spatial is supported in the considered model that allows subcarriers to be simultaneously occupied by multiple users. We assign different null users and design algorithm can perform CFO each individual user with aid of large number receive antennas, which then removes necessity multidimensional searching. Numerical results are...

The Artificial noise (AN) injection scheme is recently proposed to secure wireless transmissions. By simultaneously transmitting data symbols and artificial interference, it prevents the eavesdropper from decoding secret message intended for legitimate receiver. In this paper, we mainly focus on weakness of AN security scheme. First, analyze necessary condition such a guarantee that transmitter-receiver pair can achieve positive secrecy communication rate. And then, further propose an...

We present herein a novel method of bipolar field-effect control on DC electroosmosis (DCEO) from physical point view, in the context an intelligent and robust operation tool for stratified laminar streams microscale systems. In this unique design flow field-effect-transistor (DC-FFET), pair face-to-face external gate terminals are imposed with opposite gate-voltage polarities. Diffuse-charge dynamics induces heteropolar Debye screening charge within diffuse double layer adjacent to...

In spatial spectrum estimation, difference co-array can provide extra degrees-of-freedom (DOFs) for promoting parameter identifiability and estimation accuracy. For the sake of acquiring as more DOFs possible with a given number physical sensors, we herein design novel sensor array geometry named cascade array. This structure is generated by systematically connecting uniform linear (ULA) non-uniform array, than some exist structures but less upper-bound indicated minimum redundant (MRA). We...

This paper presents a novel approach for the joint tracking and identification (JTI) problem. JTI involves interdependent identification, thus solving them jointly is preferable. The recently proposed decision estimation (JDE) framework provides good solution such problems involving coupled estimation. To solve problem, this proposes compact conditional JDE (CCJDE) method within framework. First, we propose new CCJDE risk, which unifies traditional risks in concise form. Based on this,...

Self-localization system of wireless sensor networks based on angle departure (AOD) is studied in this paper. In AOD model, anchor node with multi-antenna transmits orthogonal pilot signals to single antenna, which entitles the function as equipping multi-antenna. Given that limited number antenna at nodes will result degree freedom (DOF) deficiency when dealing more multipath components (MPC), we adopt a novel method without requiring extra antennas. The proposed algorithm simultaneously...

This paper considers the wideband single-carrier transmission through frequency-selective wireless channels with a quality-of-service (QoS) requirement. Power allocation at transmitter and iterative frequency domain equalization (FDE) receiver are jointly designed to achieve target QoS minimum power consumption. The joint transceiver design is based on novel evolutional analysis framework for FDE without aid of decoding during processing. It introduces set quality-of-convergence (QoC)...

Frame arrival detection is the first step and of greatest importance in digital communication systems. In this paper, we consider frame issue specifically challenging low signal-to-noise ratio (SNR) situation. The proposed training sequence consists three repeated subsequences, each including a few segments exhibiting high sparsity frequency domain. method includes following two stages: matched filtering stage employs subsequence as filter coefficient, which perfectly matches received could...