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As an alternative to classical multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM), MIMO-OFDM with index modulation (MIMO-OFDM-IM), which provides a flexible trade-off between spectral efficiency and error performance, has attracted considerable interest recently. However, in order to detect the active subcarrier indices and modulated symbols precisely, the receiver...
Orthogonal frequency division multiplexing with index modulation (OFDM-IM), which uses the subcarrier indices as a source of information, has attracted considerable interest recently. When the index modulation (IM) technique is applied to filter bank multicarrier (FBMC) system, the intrinsic interferences are partly eliminated but the remaining interferences still affect the bit error rate (BER) performance...
Microinjection technique is an important method in the field of modern biotechnology in the past 50 years. However, there are few studies on organ injection in zebrafish, especially for automatic organ injection. More research focused on the injection of zebrafish embryos and eggs. The reasons are varied since zebrafish larva has complex soft body, which needs operator with rich experience to complete...
The paper concerns with the global O(t−α) synchronization for a type of FDNNs (fractional-order neural networks) with time-varying delays. Two types of output feedback controller are designed to synchronize a class of FDNNs. And we give some sufficient conditions in the form of algebraic inequalities. Finally, to demonstrate the reliability of the derived results, we give two illustrative numerical...
In this paper, we study the global mean square exponential synchronization of stochastic neural networks with time-varying delays (MSDNN). Two types of control scheme are served to synchronize a sort of MSDNN. A variety of synchronization qualifications depended on system structure are established by the means of Lyapunov function and itô formula. Some statistical examples are supplied to authenticate...
In this paper, we built a Lagrange dynamical model for an interactive master manipulator based on Delta parallel mechanism. Genetic Algorithm was used to identify the static parameters in the LuGre friction model with regard to high non-linearity friction torque of the driving parts. The Stribeck curve relating rotational velocity with static friction torque for each driving part was obtained. To...
This paper proposes a new event-triggered scheme, in which each agent has various mechanisms to respectively determine when to exchange information with each of its different neighbors. This kind of event-triggered mechanism avoids two constraints in previous mechanisms: (1) simultaneous event detection; (2) synchronous information transmission to all of neighbors. Thus our proposed scheme can be...
In this paper, a novel joint secure resource allocation optimization is proposed for full-duplex (FD) relay networks with cooperative jamming (CJ) in the presence of multiple source-destination (SD) pairs and an eavesdropper. We first derive the expression of the secrecy capacity for a single FD relay link with CJ. Then the joint power allocation and relay subchannel assignment (JPARA) optimization...
Filter Bank Multicarrier (FBMC) modulation is thought to be important in 5th generation (5G) wireless communication systems for its higher spectral efficiency than conventional orthogonal frequency division multiplexing (OFDM). In this paper, we apply a kind of soft-input-soft-output (SISO) factor-graph-based maximum-a-posterior (MAP) detector in FBMC systems. The detector has better performance than...
This paper investigates the reachability and synchronization problems for hierarchial Boolean control networks (BCNs). Here, we assume that the nodes are only affected by the nodes in the same layer network and the nodes from the previous layer network, meanwhile only affect the nodes from the next layer network. Firstly, the reachability is investigated and two notions of reachability are presented,...
In this paper, a low-complexity turbo detection scheme based on a weighted factor graph (FG) serial-schedule (SS) belief propagation (BP) equalization method is proposed for Faster-than-Nyquist (FTN) signaling. The iterative equalization method is applied to mitigate the severe intersymbol interference (ISI) introduced by FTN signaling. In order to reduce the complexity of the equalization method,...
In the Low Density Signature (LDS) based multiple access systems, the constellation of chip symbols superposed by several users' symbols is named as superposition constellation. When LDS is applied into the downlink multiple access scenario, maximizing the minimum Euclidean distance of the superposition constellation will be a big challenge. In this paper, by optimizing the superposition constellation...
This paper investigates controllability problem for multi-level Boolean control networks (BCNs). In this paper, the controllability is investigated and two notions of controllability are presented, i.e. group-controllability and simultaneous-controllability. By resorting to Perron-Frobenius theorem, necessary and sufficient criteria are obtained to guarantee group-controllability and simultaneous-controllability...
This paper proposes a novel impulsive framework to study the leader-following consensus in multi-agent systems with an event-triggered mechanism. To be specific, we design an impulsive model to reflect information exchange under event-triggered strategy. Hence the stabilization of this impulsive model can sufficiently guarantee that all followers in original multiagent systems can track the leader...
The research of Digital Shadow is focused in recent years, to combine the traditional Shadow puppets with digital technology for manufacture and performance plays a tremendous role in promoting its heritage. However, current research are mostly simulation-based, and ignore the role of the user in the system. This article starts from the users’ point of view, presents a user’s experience-oriented,...
Filter bank multicarrier (FBMC) modulation has many nice features compared with conventional cyclic prefix-based orthogonal frequency multiplexing (CP-OFDM) and has been considered as a promising waveform candidate for future 5G wireless communication. Combining FBMC with multiple-input multiple-output (MIMO) technology may achieve high data rate. In this paper, we propose the K-Best algorithm based...
The low density signature (LDS) technique which is able to support massive connectivity with non-orthogonal low density signatures is a promising multiple access (MA) scheme in future 5G systems. We firstly examine the theory of evidence to illustrate the weakness of the update rule for the message passing algorithm in LDS detection process. The combination results against the common sense (RACS)...
Cooperative communications and full-duplex (FD) relaying have been proposed to meet the ever increasing data traffic demands and fully exploit the scarce spectrum resources. In this paper, we consider FD relaying networks with multiple source-destination (S-D) pairs and multiple FD relays. We propose the joint optimal relay assignment and power allocation (ORAPA) scheme to maximize the sum rate of...
This paper presents a novel iterative frequency domain equalization (FDE) algorithm for uplink Single Carrier (SC) Frequency Division Multiple Access (FDMA) multiuser MIMO systems. The proposed FDE scheme improves the system performance by taking into consideration the complete second order statistics of the received signal in frequency domain. Our analytical model is in line with 3GPP uplink SC-FDMA...
In this paper, a cooperative channel estimation strategy is proposed in multi-cell large scale antenna systems (so-called “massive MIMO”). Based on time-shifted uplink pilot sequences, the strategy can alleviate the performance degradation caused by the pilot contamination. In addition, the truncated conjugate gradient trust region (TCGTR) algorithm is proposed to estimate the channel vectors. The...
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