Device-to-device (D2D) communication with direct terminal connection is a promising candidate for 5G communication, which increases the capacity of cellular networks and spectral efficiency. Introducing D2D to users (CUs) will increase system capacity, CUs provide reusable channel resources (DUs). However, sharing between DUs lead cofrequency interference affect quality user terminals. As means improving spectrum utilization solving problems, one-to-many model established in networks....

This paper focuses on the design of maximum ratio transmission (MRT) precoding for multi-user multiple-input multiple-output (MU-MIMO) downlink transmission. Exiting block diagonalization (BD) studies MU-MIMO systems have high complexity, because transmitter matrices constructed by singular value decomposition (SVD) are successively calculated twice. The MRT scheme construct vectors aimed at each received antennas, respectively, so signals every antenna independent. More spatial diversity...

The widespread application of wireless mobile services and requirements ubiquitous access have resulted in drastic growth the traffic huge energy consumption ultradense networks (UDNs). Therefore, energy-efficient design is very important becoming an inevitable trend. To improve efficiency (EE) UDNs, we present a joint optimization method considering user association small-cell base station (SBS) on/off strategies UDNs. problem formulated as nonconvex nonlinear programming then decomposed...

A new idea of an abandoned object detection system for road traffic surveillance systems based on three-dimensional image information is proposed in this paper to prevent accidents. novel Binocular Information Reconstruction and Recognition (BIRR) algorithm presented implement the idea. As initial detection, suspected objects are detected by static foreground region segmentation video from a monocular camera. After objects, (3D) reconstructed theory about 3D reconstruction with images...

Due to the rapid development of motor vehicle Driver Assistance Systems (DAS), safety problems associated with automatic driving have become a hot issue in Intelligent Transportation. The traffic sign is one most important tools used reinforce rules. However, image degradation based on computer vision unavoidable during movement process. In order quickly and accurately recognize signs motion-blurred images DAS, new restoration algorithm border deformation detection spatial domain proposed...

Deficits in the visual attention span (VAS) are thought to hamper reading performance dyslexic individuals. However, causal relationship between VAS deficits and disability remains unclear. The present study attempts address this issue by using a VAS-based intervention explore possible influence of on processes Chinese children with dyslexia. Given heterogeneity dyslexia effects, VAS-impaired VAS-intact individuals were separately trained. Therefore, there five groups participants study,...

In the half century from 1970 to 2022 US public firms became larger. The largest gradually still larger and more profitable. This was not due high profit `Superstar' firms, entry, or exit. We show that large firm advantage reflects: 1) reduction of flow costs -- a unmatched by average 2) long term declining interest rates. did create durable protection for top firms. Within 5 years about $30\%$ them Contrary claims in literature, persistence at increase after 2000.

The communication between the power supplier and customers is a key issue in smart grid. Current systems are based on solid information infrastructure, while wireless environments of grid face much more new challenges terms reliability, efficiency so on. This paper addresses critical issues technologies primarily technology opportunities. main object this to provide an overview at current state for grid, discuss still-open research field. Furthermore, since resources scarcity crisis...

With increasing complexity of electronic warfare environments, smart jammers are beginning to play an important role. This study investigates a method power minimization-based jamming waveform design in the presence multiple targets, which performance radar system can be degraded according jammers’ different tasks. By establishing optimization model, consumption designed spectrum is minimized. The with control constrained by specified signal-to-interference-plus-noise ratio (SINR) or mutual...

Collaborative signal processing cluster-based for target tracking in wireless sensor network is proposed this paper. Node clustering a useful approach to reduce the communication overhead and develop data fuse networks. Each node, which has incomplete information about its dynamic uncertain world, must respond sensed events within time constraints. The aim of collaborative insure that all necessary parts tasks being dealt with are involved operations at least one node. When move sensing...

A guaranteed cost sliding mode control (SMC) algorithm is investigated to further improve the accuracy of looper-tension systems in hot strip finishing mills. First, a global surface function designed by linear matrix inequalities and technique, which can force system states into switching region initially, guarantee robustness with good performance during whole process. Then, novel reaching law designed, satisfy conditions. Simulation results demonstrate that proposed scheme has stability...

We study the transmission capacity of two overlaid wireless ad hoc networks, where a primary network and secondary operate in same geographic region share spectrum. The has high priority to access spectrum is oblivious presence while limits its interference by controlling density transmitters. Assuming transmitter nodes are distributed as Poisson point process Matern cluster process, we present an upper lower bounds for that network. Numerical results show have small increment due inhomogeneity

Abstract High peak-to-average power ratio (PAPR) is one of the major drawbacks in orthogonal frequency division multiplexing (OFDM) systems. Partial transmit sequence (PTS) highly successful PAPR reduction, but considerable computational complexity for exhaustive search over all combinations allowed phase factors potential problem a practical implementation. In this paper, harmony research algorithm applied to optimal combination factors, which can significantly reduce and offers lower at...

The main disadvantage of orthogonal frequency division multiplexing (OFDM) systems is the high time-domain peak-to-average power ratio (PAPR) that limits transmitter efficiency. Partial transmit sequence (PTS) technique can improve PAPR statistics an OFDM signal significantly. However PTS requires exhaustive search over all combinations allowed phase factors, and complexity increases exponentially with number sub-blocks. In this paper, a suboptimal algorithm harmony applied to decrease...

Compared with traditional cellular networks, cloud wireless access network (C-RAN) can save more energy consumption because it centrally processes the signals in baseband unit (BBU) pool served by platform. Aiming at limited fronthaul capacity of link caused massive data and huge explosive growth mobile traffic, an energy-saving resource management scheme that is powered a mixture on-grid green proposed this paper. Specifically, new efficiency (EE) model constructed. The RRH hybrid to supply...

Partial transmit sequence (PTS) is an efficient algorithm to solve the problem of high peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM), but its exhaustive search phase factors results computational complexity. A PTS based on cyclic iteration (C-IPTS) proposed this problem. In algorithm, factor achieved by previous set as initial current search, thus more close optimal after repetition, a result, PAPR performance eliminated effectively. Moreover, effect...

PTS is highly efficient in peak-to-average power ratio (PAPR) reduction of OFDM systems, but the considerable computational complexity for required search through a high-dimensional vector space potential problem practical implementation. In this paper, we formulate as combinatorial optimization (CO) problem, then propose an algorithm based on improved discrete particle swarm (I-DPSO), which reduces number multiplications PTS. Numerical results show that, proposed can achieve...

The partial transmit sequence (PTS) technique has received much attention in reducing the high peak to average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals, but its exhaustive search phase factors causes computational complexity. To solve this problem, a novel method based on optimization algorithm is proposed reduce complexity by searching weighting suboptimally. simulation results show that can not only reduces PAPR significantly, also decreases

Through the in-depth study of biological characteristics, gait information each person is found to be unique. Therefore, characteristics can used identify a person’s identity information. However, pedestrian often affected by various interference factors such as viewing angle, dress, and carrying objects. To solve this problem, idea perspective transformation proposed transform images from different perspectives states under standard conditions on one side. Generative adversarial network...