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In this paper, a variable step size LMS algorithm was introduced to eliminate the coupling interference of torpedo active electromagnetic fuze system. The variable step size will increase or decrease according to the residual error, which can achieve a faster convergence rate, a smaller steady-state error and a better adaptability to the signal-to-interference ratio (SIR) than the fixed step size...
In this paper, minimum MSE based interference alignment (IA) algorithm is developed for the interfering broadcast channel (IBC), which models the multi-cell downlink system, underlying cognitive radio, device-to-device and other scenarios. The IA precoders and decoders are computed to minimize the MSE. Cascade design is used for IA precoder design, where the first component precoder is obtained by...
This paper investigates distributed resource allocation in next-generation underlay Device-to-Device (D2D) networks. The joint channel and power allocation for a D2D network underlaying a cellular network is formulated as a non-cooperative game. A utility-based learning algorithm which does not require information exchange between device pairs is proposed to determine the channel index and power level...
Remotely Operated Vehicle (ROV) need to maintain the stability of the ROV body as much as possible to achieve efficient operation, so the ROV dynamic positioning technology is essential. A new multivariable fast nonsingular terminal sliding mode control (MFNTSM) method is proposed for the problem that global convergence of the nonsingular terminal sliding mode control (NTSM) method is slow. The six-degree-of-freedom...
This paper presents a variable coefficient nonsingular fast terminal sliding mode (VCNFTSM) control method with the extended state observer (ESO) for a class of second-order uncertain SISO nonlinear systems subject to external disturbance. First, a new variable coefficient double exponential reaching law is combined with NFTSM surface function to get finite time fast convergence in both reaching phase...
To realize a consensus problem based on wireless communications, it is necessary to consider several constraints caused by the natures of wireless communications such as communication error, coverage, capacity, multi-user interference, half-duplex and so on. This work focuses on half-duplex constraint and multi-user interference for a consensus problem and proposes a new Slotted-ALOHA that changes...
In this paper, distributed Nash equilibrium seeking for multi-agent games, particularly for games where the players' payoff functions are partially coupled, is investigated. To model the (partial, explicit) dependence of the players' payoff functions on the players' actions, an interference graph is introduced. Besides, the players are supposed to be equipped with a communication graph to achieve...
This paper considers queue-driven, real-time interference mitigation aiming to maximize wireless network throughput. A best-response power control algorithm is derived from successive convex approximations, and a single power update is performed at each scheduling interval. In the high-SINR regime, the power control algorithm achieves maximum network throughput. Extending the approach to general SINR...
In this paper, under the situation of multiple interference regions, an optimal antenna placement problem for a distributed Multi-Input Multi-Output (MIMO) radar is studied. Considering multiple interference regions, we solve the antenna placement problem by utilizing antenna placement method based on Multi-Objective Particle Swarm Optimization (MOPSO). However, it is not clear when to stop the iteration...
In this paper, we consider the energy efficiency maximization problem in downlink multi-input multi-output (MIMO) multi-cell systems, where all users suffer from inter-cell interference. To solve this optimization problem with a nonconcave objective function and a complex-valued matrix variable, we extend the recently developed successive pseudo-convex approximation framework and propose a novel iterative...
In this work, we acknowledge the existence of the accumulation of the loopback self-interference when AF protocol is made used of in FDTW relaying and the channel estimation of the loopback channel is not done perfectly as will seen in the section to follow. The accumulation of the loopback self-interference comes from the functionality of FD antenna, which will bring back the transmitted signal to...
A new clutter-map constant false alarm rate (CFAR) detection algorithm for log-normal distribution is proposed. A combination of two recursive estimators (dual estimators) is considered for the estimation of the mean and standard deviation of the log-normal interference. Compared with the estimation method based on digital exponential filtering technique, the dual estimators converge faster while...
To address demanding requirements in terms of expected throughput, latency and scalability, 5G networks will offer high capacity to support huge volumes of traffic generated by heterogeneous services. Dense deployment of small cells can provide a valid solution but are prone to high levels of interference especially at the cell-edge. However, to reduce inter-cell interference and improve cell-edge...
Energy efficiency (EE) is becoming one of the important criteria in wireless transmission design. This paper discusses the recently proposed energy-efficient transmit beamforming designs for multicell multiuser multiple-input single-output (MISO) systems, including maximizing overall network EE, sum weighted EE and fairness EE. Generally, the EE optimization problems are NP-hard nonconvex programs...
Efficiently of spectrum allocation is the key for dynamic spectrum access in the Cognitive Radio Network (CRNs). Based on graph coloring model, this paper proposes a random drift particle swarm optimization (RDPSO) algorithm to allocate the spectrum, with the purpose of improving the reward and fairness of network. The RDPSO algorithm introduces the thermal coefficient and drift coefficient, and it...
The control problem of vehicle DC-DC converter is the key problem of the new energy vehicle power system. In this study, Averaged state space method is used to develop converter model. the new global fast terminal sliding mode control scheme is proposed as a new approach for the voltage tracking control, a new control design method is developed to obviate the DC-DC converter disturbances. In order...
System performance on cognitive femtocell network depends on power control method. Therefore, power control comparison between DPC and PCG is needed. Result showed that DPC had higher convergence rate than PCG but maximum values of DPC was only equal to SINR target. The proposed PCG at the convergent condition was able to exceed the SINR target, yet it had higher power than the previous PCG which...
We are considering problem of estimating autoregressive signal coefficients over a network of agents. Noise and/or multipath are disturbing reception of the signals in network nodes. The autoregressive signals have different powers and delays at different nodes. Least-mean-square algorithms are used in nodes for the estimation as well as the cooperation strategy based on the adapt-then-combine diffusion...
In recent years, several progresses have been made in belief propagation (BP) based signal detection with large scale factor graphs. When we apply the BP algorithm to equalization in a SIMO multipath channel, the factor graph has many short loops where the edge strengths have a fixed pattern. Thus, the proper convergence is not always expected. In general, the LLR oscillates in ill-converged cases...
The major goal of research in Mobile Ad hoc Networks (MANET) is the efficient utilization of scarce available resources while improving network throughput and network lifetime. Energy consumption is one precious component of these resources as multimedia applications consumes enormous amount of energy during communication. To achieve the goal of optimal energy conservation of a MANET, an optimal power...
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