The development of drones has captured the attention hobbyists and investors alike; now have greater commercial military applications owing to their relatively small size ability fly without an on-board pilot. However, certain drone may pose serious threats public safety. most important problem be addressed is recognition in security-sensitive areas. This paper presents approach recognize through sounds emitted by propellers using Mel frequency cepstral coefficients (MFCCs) technique for...

The use of the unmanned aerial vehicle (UAV) has been regarded as a promising technique in both military and civilian applications. However, due to lack relevant laws regulations, misuse illegal drones poses serious threat social security. In this paper, we develop trajectory planner based on particle swarm optimization proposed surveillance area importance updating mechanism aimed at deriving three-dimensional (3D) optimal trajectories for multiple monitoring drones. We also propose...

The world is converging towards wireless as a communication channel and at the same time facing energy environmental problems. solution by mingling information technology (IT) power. Streetlights are among city's most important expensive assets usually costs one third of electricity bill. proposed smart light control system outclasses previous systems because it integrates low power protocol Zig Bee with LED lights. reduces lights according to outside conditions intensity has ability dim...

This paper addresses the issues of resource allocation and co-channel interference management for coexistence of, cooperation between, two long term evolution (LTE) networks. In Republic Korea, LTE-based public safety (PS-LTE) network is being built 700-MHz frequency band. However, same band also allocated to high-speed railway (LTE-R) network, so immense interest useful researches into schemes are immediately needed. this paper, we focus on downlink system coexisting PS-LTE LTE-R networks...

This paper reports the performances of several broad-band monolithic SiGe microwave integrated circuits (MMICs) suitable for phased-array radar applications. The amplitude and phase control MMIC designs are based on an optimized p-i-n diode offered by IBM 5HP foundry process. Utilizing this diode, circuitries including a (1-20-GHz) single-pole double-throw switch, five-port transfer 6-bit shifter, 5-bit attenuator, all operating over 7-11 GHz, designed. Also, design performance...

Abstract This paper addresses issues with monitoring systems that identify and track illegal drones. The development of drone technologies promotes the widespread commercial application However, ability a to carry explosives other destructive materials may pose serious threats public safety. In order reduce these threats, we propose an acoustic-based scheme for positioning tracking Our proposed has three main focal points. First, scan sky switched beamforming find sound sources record sounds...

In the Republic of Korea, a Long Term Evolution (LTE)-based public safety (PS)-LTE network is being built using 718~728 MHz for uplink and 773~783 downlink. However, same bands are also assigned to LTE-based high-speed railway (LTE-R) network, so great concerns practical researches on co-channel interference (CCI) management schemes urgently required. this paper, performance analyzed evaluated by considering cases non-RAN (radio access network) sharing LTE-R RAN PS-LTE user equipments (UE)....

Interest in the study of next-generation underwater sensor networks for ocean investigation has increased owing to developing concerns over its utilization areas, such as oceanography, commercial operations maritime and military surveillance. The base station controller, form a surface buoy, communicates with stations (UBSs) while UBSs transceiver information nodes via acoustic communications. This paper provides link-level system-level downlinks using an orthogonal frequency-division...

The fifth-generation (5G) communications systems are expecting to support users with diverse quality-of-service (QoS) requirements. Beside these requirements, the task utmost importance is emergency communication services during natural or man-made disasters. Most of conventional base stations not properly functional a disaster situation, so deployment such as mobile personal cell (mPC) crucial. An mPC having moving capability can move in area provide services. However, causes severe...

Unmanned aerial vehicles (UAVs) equipped with reconfigurable intelligent surfaces (RISs) have emerged as a promising technology for numerous applications involving networks. However, the UAV-RIS concept faces challenges related to deployment of UAV-RIS, especially in cases, where is combined emerging technologies, such beamforming, sensitive propagation channel variation. In this article, we first overview various use-cases beam-forming considering practical scenarios. Aiming improve...

Cellular-based vehicle-to-everything (C-V2X) is one of the emerging and promising techniques to support vehicular communications by enabling both safety-critical non-safety services. C-V2X a core solution manage advance future traffic safety mobility. In this paper, we design cellular-based vehicle-to-infrastructure (V2I) model for Manhattan dense urban environment that has many roads deployed in cell edge region, which results severe co-channel interference (CCI). Thus, aim utilize two...

In recent years, the development of drone technologies has promoted widespread commercial application drones.However, ability to carry explosives and other destructive materials may bring serious threats public safety.In order reduce these from illegal drones, acoustic feature extraction classification are introduced for sound identification.In this paper, we introduce vector method harmonic line association (HLA), subband power based on wavelet packet transform (WPT).We propose a combined...

In recent years, femtocells are receiving considerable attention towards increasing the network coverage, capacity, and improving quality of service for users. However, as use same radio band, it poses a serious cross-tier interference issue. this paper, reasonable effective suppression scheme, that is, based fractional power control (QoS-FPC) under HetNet environment is proposed. The proposed scheme limits at eNB below given threshold, hence results in optimization femtocell users...

Random-access channels (RACHs) are designed to establish a connection between the user equipments (UEs) and network. However, current long-term evolution (LTE) standard has limitations in providing RACH resources massive UE connections. If numerous UEs send request simultaneously, it results severe collisions significant access delays that degrade system performance. There been lot of previous research into controlling this overload; however, there no proposals resolve overload issues for...

In recent years, development of femtocells are receiving considerable attention towards increasing the network coverage, capacity, and improvement in quality service for users. 3GPP LTE-Advanced (LTE-A) system, to efficiently utilize bandwidth, femtocell macro cell uses same frequency band, but this deployment poses a technical challenge cross-tier interference paper, novel based fractional power control (QoS-FPC) scheme under heterogeneous networks environment is proposed, which considers...

The increasing interest in next-generation underwater acoustic communications networks is due to vast investigation of oceans for oceanography, commercial operations maritime areas, military surveillance, and more. A surface buoy or base station controller (UBSC) communicates with either transceivers stations (UBSs) via links. Transceivers further communicate sensor nodes using In this paper, we employ a downlink (DL) power allocation (PA) strategy an orthogonal frequency-division multiple...

Automatic modulation classification (AMC) can play an important role in the timely identification of suspicious and unwanted signal activities to enable secure communication future next-generation cellular networks. Moreover, AMC detect scheme without even adding additional overhead signal. In this paper, we developed a universal software radio peripheral (USRP) based intelligent system classify various digital schemes real-time. For each scheme, extracted different spectral features for...

We address the problem of a coordination among machine learning tools solving different problems radio resource management. focus on energy efficient device-to-device (D2D) communication in scenario with many devices communicating adhoc directly each other. In such scenario, deep neural network (DNN) is convenient tool to predict channel quality and control transmission power. However, addressing both by single DNN not suitable due dependency power predicted quality. Similarly, simple...

Underwater acoustic sensor networks (UASNs) have recently attracted considerable attention because of the numerous underwater applications. The propagation delay, however, is most challenging factor for successful communication in UASNs. This article presents a cooperative scheme reliable transmission To cope with packet collision caused due to we propose an adaptive control avoidance (ACP-CA) avoid packets during channel reservation phase (CCRP). Moreover, reduce between data packets, relay...

Field strength measurements were conducted at VHF and UHF for different base station antenna heights in the south Indian coastal zones urban, sub-urban, quasi-open open regions. These experimentally observed values are compared with prediction methods like Hata, ITU-R, Blonquist & Ladell, Egli, Tbrahim Parsons. The results showed that sub-urban urban regions Hata's method gave reasonable agreement region better 440 MHz than 150 MHz. All other deviated appreciably from values.