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Estimation of $$\alpha -\kappa -\mu $$ α - κ - μ mobile fading channel parameters using evolutionary algorithms Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-09 Carlos Paula Lemos, Antônio Cláudio Paschoarelli Veiga, Sandro Adriano Fasolo
This paper proposes the use of evolutionary algorithms (EAs) to estimate the physical parameters of the generalized \(\alpha -\kappa -\mu \) mobile fading channel model. The estimation of parameters is a fundamental step that allows for the statistical model to adjust to the real experimental data. The The maximum likelihood estimation (MLE) method that is traditionally used for estimating parameters
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Electromagnetic situation generation algorithm based on information geometry Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-08 Zhe Song, Yi Zhang, Hongli Lv, Peilin Chen, Chengkai Tang
In complex electromagnetic environment, the different location of interference sources will affect their normal function. In order to seek and locate the source of the interference, it is necessary to generate the electromagnetic situation that can be clearly shown and easily evaluated. The existing methods have the problems of slow calculation speed, low accuracy and incapably working under all kinds
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A fault-tolerant architecture for internet-of-things based on software-defined networks Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-06 Katayoun Bakhshi Kiadehi, Amir Masoud Rahmani, Amir Sabbagh Molahosseini
One of the most critical challenges of the Internet of Things (IoT) is to provide real-time services. Therefore, to provide a secure, efficient, and stable communication platform in the Internet of Things, emerging architectures such as software-defined networks (SDN) being significant. This paper proposes a comprehensive SDN based fault-tolerant architecture in IoT environments. In the proposed scheme
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Low-complexity interference cancellation algorithms for detection in media-based modulated uplink massive-MIMO systems Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-05 Manish Mandloi, Devendra Singh Gurjar
Media-based modulation (MBM) is a novel modulation technique that can improve the spectral efficiency of the existing wireless systems. In MBM, multiple radio frequency (RF) mirrors are placed near the transmit antenna(s) and are switched ON/OFF to create different channel fade realizations. In such systems, additional information is conveyed through the ON/OFF status of RF mirrors along with conventional
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On the simulation of the Middleton Class-A noise model for single- and multi-carrier modulation in power line communication Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-05 Fatma Rouissi, A. J. Han Vinck, Adel Ghazel
We propose a novel simulation approach of the Middleton Class-A model for impulsive noise generation considering symbol-wise transmission in a real Power Line Communication environment. Then, we validate the proposed approach for both single carrier binary FSK based—and multi-carrier OFDM-based communication systems. Established analytical formulations and obtained simulation results for the impulsive
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Advanced switching DE algorithm based PTS companding technique for PAPR reduction in OFDM systems Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-04 Mahua Rakshit, Subhankar Bhattacharjee, Gautam Garai, Amlan Chakrabarti
Partial Transmit Sequence (PTS) is an efficient method for diminishing the high Peak to Average Power Ratio (PAPR) for Orthogonal Frequency Division Multiplexing (OFDM) system. However, finding an optimum phase factor among different combinations of phase factors, rigorous searching is required. It ultimately increases the computational complexity. For practical implementation high computational complexity
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Adaptive energy-efficient small cell sleeping and zooming in heterogeneous cellular networks Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-03 Sama Habibi, Vahid Solouk, Hashem Kalbkhani
With the rapid growth of the number of cellular network users and their tendency to share various multimedia files, providing better coverage for users and guaranteeing the quality of service (QoS) to serve them by base stations (BSs) are essential. On the other side, with the increase in the number of users and BSs, the power consumption augments in the cellular network. Heterogeneous network (HetNet)
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Compressive sensing-based energy consumption model for data gathering techniques in wireless sensor networks Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-03 Mohammad Reza Ghaderi, Vahid Tabataba Vakili, Mansour Sheikhan
Nowadays, wireless sensor networks (WSNs) have found many applications in a variety of topics. The main objective in WSNs is to measure environmental phenomena and send reading data to the sink in multi-hop paths. The most important challenge in WSNs is to minimize energy consumption in the sensor nodes and increase the network lifetime. One of the most effective techniques for reducing energy consumption
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A QoE adaptive management system for high definition video streaming over wireless networks Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-03 Miran Taha, Alejandro Canovas, Jaime Lloret, Aree Ali
The development of the smart devices had led to demanding high-quality streaming videos over wireless communications. In Multimedia technology, the Ultra-High Definition (UHD) video quality has an important role due to the smart devices that are capable of capturing and processing high-quality video content. Since delivery of the high-quality video stream over the wireless networks adds challenges
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Defense mechanisms against DDoS attack based on entropy in SDN-cloud using POX controller Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-03 Anupama Mishra, Neena Gupta, B. B. Gupta
Software defined networks (SDNs) in a combination of cloud computing are the best amalgamation for the researchers and industry. Though, these unique networking paradigms have been accepted world widely, they are hampered by various security threats. Among all the threats, the attack, Distributed Denial-of-Service (DDoS) is the most severe attack into the SDN-Cloud. In spite of, so many developments
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Review and experimental evaluation of ADR enhancements for LoRaWAN networks Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-02 Norhane Benkahla, Hajer Tounsi, Ye-Qiong Song, Mounir Frikha
With the ever growing internet of things market, Low Power Wide Area Networks (LPWAN) become more and more attractive. Among the various LPWAN technologies, LoRa (and LoRaWAN) has drawn a lot of research attention with its great adaptation capability. In fact, its spectrum modulation spreading factor, transmission power, data rate, channel bandwidth, and coding rate are so many configurable parameters
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Lama: Link characteristic aware multicast data dissemination for computational RFIDs Telecommun. Syst. (IF 1.734) Pub Date : 2021-01-02 Biaokai Zhu, Cuixian Luo, Sanman Liu, Jumin Zhao, Meiya Dong, Ruiqin Bai, Deng-ao Li
Computational radio frequency identification can be successfully employed in a range of applications. The efficient data dissemination is a building block for useful functions such as parameter configuration, code debug fixing, and wireless reprogramming. Many recent data dissemination protocols have adopted transmission methods from a reader to a single tag following EPC C1G2. Even if the same data
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Analysis of crowdsourced data for estimating data speeds across service areas of India Telecommun. Syst. (IF 1.734) Pub Date : 2020-11-21 V. Sridhar, K. Girish, M. Badrinarayan
The intense adoption of Information Technology by businesses and government have increased data consumption across the world. While some countries have augmented their telecom infrastructure, data speeds are still very low in countries such as India. In this paper, we collected about 25 million records of crowdsourced data obtained through the mobile app deployed by the regulator in India. We have
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Phishing website detection using support vector machines and nature-inspired optimization algorithms Telecommun. Syst. (IF 1.734) Pub Date : 2020-11-19 Sagnik Anupam, Arpan Kumar Kar
Phishing websites are amongst the biggest threats Internet users face today, and existing methods like blacklisting, using SSL certificates, etc. often fail to keep up with the increasing number of threats. This paper aims to utilise different properties of a website URL, and use a machine learning model to classify websites as phishing and non-phishing. These properties include the IP address length
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On spectrally-efficient device-to-device communication with wireless information and power transfer Telecommun. Syst. (IF 1.734) Pub Date : 2020-11-05 Sutanu Ghosh
In this paper, the model of cooperative cognitive radio network is used to explore the two-way communications between a pair of unlicensed users by sharing the spectrum of any existing pair of licensed users. The licensed users of the spectrum are considered as primary users (PUs) and the unlicensed users of the spectrum are considered as secondary users (SUs). SUs are able to access the PUs spectrum
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Mobile relays for urban rail transportation systems Telecommun. Syst. (IF 1.734) Pub Date : 2020-11-02 Mauricio Iturralde, Tanguy Kerdoncuff, Thomas Galezowski, Xavier Lagrange
Assuring an uninterrupted high Quality of Service (QoS) of railway communications between on-board terminals and base stations creates challenges for the provider. This is partly explained by the inherent mobility and the high penetration loss of carriages. Deploying mobile relays in public transportation is possible with a 100%-compatible LTE/EPC architecture. This effectively ensures that the electromagnetic
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Cluster-based location service schemes in VANETs: current state, challenges and future directions Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-30 Muhammad Akram Mujahid, Kamalrulnizam Abu Bakar, Tasneem S. J. Darwish, Fatima Tul Zuhra
Vehicular Ad hoc Networks (VANETs) have drawn incredible interest in both academic and industrial sectors due to their potential applications and services. Vehicles’ position plays a significant role in many location-based applications and services such as public emergency, vehicles tracking, resource discovery, traffic monitoring and position-based routing. A location service is used to keep up-to-date
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Enhanced CBL clustering performance versus GRP, OLSR and AODV in vehicular Ad Hoc networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-29 Martine Wahl, Patrick Sondi, Lucas Rivoirard
Routing protocols for Mobile Ad hoc NETworks resort to broadcast in order to achieve their main functionalities such as node discovery, topology dissemination, route discovery and self-organizing. In order to reduce the impact of routing traffic and other broadcast traffic generated by the applications, clustering is one of the main approaches widely investigated. Recently, the Chain-Branch-Leaf (CBL)
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Energy efficiency optimization for amplify and forward relay networks with channel estimation errors Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-29 Foroogh S. Tabataba, Parisa Rouhani, Mohammad Koolivand
Due to the rapidly increasing energy consumption of the wireless communication systems, designing an energy-efficient system has become an important challenge. One can consider cooperative communication as a promising solution to reduce energy consumed by wireless networks. Hence, in this paper, we study the problem of maximizing energy efficiency by optimally allocating power in three cooperative
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A comprehensive survey of AI-enabled phishing attacks detection techniques Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-23 Abdul Basit, Maham Zafar, Xuan Liu, Abdul Rehman Javed, Zunera Jalil, Kashif Kifayat
In recent times, a phishing attack has become one of the most prominent attacks faced by internet users, governments, and service-providing organizations. In a phishing attack, the attacker(s) collects the client’s sensitive data (i.e., user account login details, credit/debit card numbers, etc.) by using spoofed emails or fake websites. Phishing websites are common entry points of online social engineering
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Telecom churn prediction and used techniques, datasets and performance measures: a review Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-20 Hemlata Jain, Ajay Khunteta, Sumit Srivastava
Customer churn prediction in telecommunication industry is a very essential factor to be achieved and it makes direct impact to customer retention and its revenues. Developing a good and effective churn prediction model is very important however it is a time-consuming process. This study presents a very good review of customer churn, its effects, identification of its causes, business needs, methods
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ICI and BEP analysis of hyperbolic FRFT based systems for satellite internet of things Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-19 Mohammad Reza Mousavi, Ali Shahzadi, Ali Asghar Orouji
In this paper, calculations of intercarrier interference (ICI) and bit error probability (BEP) of hyperbolic fractional Fourier transform (FRFT) based systems for the satellite internet of things applications, has been considered. Analysis of ICI power and BEP in Rician flat fading channels has been done, mathematically. Simulations approve that the systems based on the hyperbolic FRFT are resistant
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Design and analysis of a sleep and wake-up CMOS low noise amplifier for 5G applications Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-16 A. Andrew Roobert, D. Gracia Nirmala Rani
This brief proposes a two-stage cascoded CMOS LNA with common drain envelope detection based power reduction method for the 5G applications of 28 GHz frequency. Dual inductive peaking and stagger tuning techniques are involved to get a 3 dB bandwidth of 2.25 GHz from 26.75 to 29 GHz. Besides, 22 dB of gain is provided by the proposed LNA. Inductive source degeneration helps to reduce the Noise Figure
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Probabilistic distribution learning algorithm based transmit antenna selection and precoding for millimeter wave massive MIMO systems Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-15 Salman Khalid, Rashid Mehmood, Waqas bin Abbas, Farhan Khalid, Muhammad Naeem
In modern day communication systems, the massive MIMO architecture plays a pivotal role in enhancing the spatial multiplexing gain, but vice versa the system energy efficiency is compromised. Consequently, resource allocation in-terms of antenna selection becomes inevitable to increase energy efficiency without having any obvious effect or compromising the system spectral efficiency. Optimal antenna
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MACD e-ICIC: a dynamic LTE interference coordination method based on trend and trading know-how Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-10 Yuri V. L. de Melo, Vicente A. de Sousa, Tarcisio F. Maciel
Mobile communications are preparing for the incredible changes from \(4\mathrm{th} \,\hbox {Generation (4G)}\) to \(5\mathrm{th}\hbox { Generation (5G)}\) in the coming years. In this new generation, co-channel interference is one of the critical challenges to be tackled due to network densification by providing high data rates through several macro and small cells working together, configuring the
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Throughput optimization of cooperative non orthogonal multiple access Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-08 Ghassan Alnwaimi, Hatem Boujemaa, Kamran Arshad
This paper derives the outage and packet error probabilities of Non Orthogonal Multiple Access (NOMA) systems. In the first time slot, the Base Station transmits a combination of two symbols \(s_w\) and \(s_s\) dedicated for weak and strong users. This signal is received by the two users and a relay. In the second time slot, the relay amplifies the received signal to the two users. Both users use the
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Message authentication algorithm for OFDM communication systems Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-06 Reem Melki, Hassan N. Noura, Javier Hernandez Fernandez, Ali Chehab
With the huge expansion in the telecommunications industry, the need for robust information security is becoming more critical than ever. Physical Layer Security has, recently, emerged as a promising candidate to secure emerging communication systems in a lightweight manner. This approach has proven to be superior to existing schemes, which has motivated many researchers to shift their work towards
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A Pareto frontier for node survivable computer network design problem Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-06 Ali Hadian, Mehri Bagherian
In a survivable network design problem in cloud computing, one important goal is minimizing the network building costs, and the other important goal is maximizing the technical capability of the network. The literature investigation shows that the previous studies for computer network design proposed models only considering one of the above-mentioned goals and neglected the other. In this paper, a
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Multiband frequency reconfigurable substrate integrated waveguide antenna using copper strip for cognitive radio applicable to internet of things application Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-05 Najib AL-Fadhali, Huda Majid, Rosli Omar
In this paper, a Multiband Frequency Reconfigurable Substrate Integrated Waveguide (FR-SIW) cavity backed slot antenna for Cognitive Radio appropriate to Internet of Things (IoT) technology is presented. The proposed antenna is developed to address the specific design challenges posed by the IoT based Cognitive Radio (CR) networks. Reconfiguration of frequency bands is achieved using copper strips
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Fault detection in satellite power system using convolutional neural network Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-05 M Ganesan, R Lavanya, M Nirmala Devi
Satellite failures account for heavy, irreparable damages, especially when associated with the Power System which is the heart of a satellite. Anomalies in Satellite Power System (SPS) can lead to complete failure of the mission. This demands the need to understand the causes of power system related failures. Huge number of sensors installed in a satellite system conveys information regarding the health
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Upper bounds on the minimum distance for turbo codes using CPP interleavers Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-02 Lucian Trifina, Daniela Tarniceriu, Jonghoon Ryu, Ana-Mirela Rotopanescu
Analysis of error correction performance for error correcting codes is very important when using such codes in digital communication systems. At medium-to-high signal-to-noise ratios, the distance spectrum of the error correcting code represents a good indicator for the error correction performance of the code. It is desired that the minimum distance of the code is as large as possible and that the
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A survey on femtocell handover management in dense heterogeneous 5G networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-10-01 Rami Ahmad, Elankovan A. Sundararajan, Ala’ Khalifeh
The Heterogeneous Network is widely used in the Fifth Generation wireless network to solve the problem of increasing demand on wireless communication. Femtocell or called Home-evolved NodeB (HeNB) is one of the small cells nominated to be used in this generation. HeNB is a low-power, low-cost, and short coverage area base station randomly assigned by the user. Therefore, HeNB is used in Long Term Evolution
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Avoiding bottlenecks in networks by short paths Telecommun. Syst. (IF 1.734) Pub Date : 2020-09-27 Chen Levi, Michael Segal
Data center networks are typically characterized by high density communication components that process and exchange large amount of information using shortest paths. Mostly, data centers network topologies contain multi-rooted tree with multiple equal cost shortest paths between pairs of hosts. Usually, data center networks operation is based on the result of shortest path algorithms and per-flow static
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Energy-efficient adaptive GTS allocation algorithm for IEEE 802.15.4 MAC protocol Telecommun. Syst. (IF 1.734) Pub Date : 2020-09-23 Manoj Tolani, Sunny, Rajat Kumar Singh
The standard IEEE 802.15.4 fails to perform optimally for railway monitoring applications due to the deficiency of guaranteed time slots (GTSs). In the present work, an adaptive GTS allocation algorithm (AGAA) is proposed which efficiently deals with a deficiency of GTSs and slot underutilization problem. The proposed AGAA algorithm saves unutilized bandwidth of GTS and the saved bandwidth is utilized
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Energy balanced data gathering approaches, issues and research directions Telecommun. Syst. (IF 1.734) Pub Date : 2020-09-10 Jagrati Kulshrestha, Manas Kumar Mishra
Wireless sensor networks (WSNs) and Internet of Things domain comprise of numerous small sized battery powered sensor nodes. Energy efficiency and energy balancing are very important aspects from the perspective of increasing the lifespan of WSN. Energy balancing is more important in case of multi-hop networks with many-to-one communication pattern as the nodes which are closer to the sink have more
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Multi-user Shared Access (MUSA) procedure for device discovery in D2D communication Telecommun. Syst. (IF 1.734) Pub Date : 2020-09-05 Omar Hayat, Razali Ngah, Siti Zaiton Mohd Hashim
In a wireless self-organizing and the network-assisted Device-to-Device (D2D) network, proximal Device Discovery (DD) plays a noteworthy role. It is the foundation for self-governing, coverage expansion and performance improvement for example, cooperative and multi-hop transmission. Energy efficiency and discovery accuracy are critical performance measures for proximal DD. A novel DD procedure using
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An optimized content delivery approach based on demand–supply theory in disruption-tolerant networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-26 Samira Esfandiari, Mohammad Hossein Rezvani
Disruption-tolerance networks (DTNs) are suitable for applications that may lack continuous network connectivity. Examples of such applications include coupon distribution, crisis relief, traffic notification, and broadcasting news from a website. Generally, these contents have a temporal constraint, so that their value will be decreased over time. DTNs have to utilize mobile relay nodes to transmit
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EHCR-FCM: Energy Efficient Hierarchical Clustering and Routing using Fuzzy C-Means for Wireless Sensor Networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-20 Akhilesh Panchal, Rajat Kumar Singh
Wireless Sensor Network (WSN) is a part of Internet of Things (IoT), and has been used for sensing and collecting the important information from the surrounding environment. Energy consumption in this process is the most important issue, which primarily depends on the clustering technique and packet routing strategy. In this paper, we propose an Energy efficient Hierarchical Clustering and Routing
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QAAs: QoS provisioned artificial intelligence framework for AP selection in next-generation wireless networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-19 Bhanu Priya, Jyoteesh Malhotra
Emerging trend of ubiquitous data access is driving the demand for effective wireless communication connectivity. In essence to this, wireless local area network (WLAN) technology seems to be a reliable and cost effective access for the next-generation wireless ecosystem. But the pivotal challenge for WLAN in the next generation wireless networks is to cater the legions of heterogeneous services with
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Pricing games of NFV infrastructure providers Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-12 Laszlo Toka, Marton Zubor, Attila Korosi, George Darzanos, Ori Rottenstreich, Balazs Sonkoly
Future online services will be provisioned over the federation of infrastructure providers for economic reasons: for effective usage of resources and for a wide geographic reach of customers. The technical enablers of this setup, envisioned also for 5G services, are the virtualization techniques applied in data centers, and in access and core networks. Business aspects around the provisioning of these
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Enhancing localization accuracy of collaborative cognitive radio users by internal noise mitigation Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-10 Sabyasachi Chatterjee, Prabir Banerjee, Mita Nasipuri
Location information of mobile primary users is one of the essential requirements for an underlay cognitive radio user to utilize the licensed spectrum efficiently. The performance of various location-based applications such as global navigation satellite system, device to device communication in dense urban 5G network also depends on the localization accuracy. In this paper, a collaborative localization
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Research on a factor graph-based robust UWB positioning algorithm in NLOS environments Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-10 Xin Li, Yang Wang
In a non-line-of-sight (NLOS) environment, ultra-wide band (UWB) high accuracy positioning has been one of the hot topics in studying indoor positioning. In this paper, a factor graph-based UWB positioning algorithm has been proposed based on an improved Turkey robust kernel. It has overcome not only the defect of the least squares algorithm for UWB positioning against non-Gaussian noise but also eliminated
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Current and future developments to improve 5G-NewRadio performance in vehicle-to-everything communications Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-06 Shimaa A. Abdel Hakeem, Anar A. Hady, HyungWon Kim
Vehicle to Everything (V2X) communication is a technology that provides connectivity between vehicles, pedestrians, and road infrastructure. Dedicated Short-Range Communication (DSRC) is proposed by different standards such as ETSI, IEEE, and others since ten years ago to provide wireless connectivity in V2X. Recently, the LTE-V2X based cellular communication is standardized by the 3rd Generation Partner
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Joint admission control, cell association, power allocation and throughput maximization in decoupled 5G heterogeneous networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-03 Humayun Zubair Khan, Mudassar Ali, Muhammad Naeem, Imran Rashid, Adil Masood Siddiqui, Muhammad Imran, Shahid Mumtaz
Downlink (DL)-uplink (UL) coupled cell association scheme was adopted in 3rd generation (3G) homogeneous network and 4th generation (4G) heterogeneous network (HetNet). In the coupled cell association scheme, a user is associated to single base station (BS) in DL & UL based on the strongest received signal power (SRSP) in DL from a macro base station (MBS) and multiple small base stations (SBS) in
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Stochastic approach for channel selection in cognitive radio networks using optimization techniques Telecommun. Syst. (IF 1.734) Pub Date : 2020-08-01 D. Sumathi, S. S. Manivannan
Secondary Users (SU) are guided by Cognitive Radio Device in identifying a channel licensed to Primary Users (PU) when it is free. Whenever PU arrives, SU shall vacate and search for the alternate band by a conditional handoff. Existing handoff methods reduce the network’s efficiency. The proposed stochastic approach under hybrid Spectrum Hand-off is (SHO) employing the Invasive Weed Optimization (IWO)
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Cognitive radio networks for green wireless communications: an overview Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-31 Arash Ostovar, Hengameh Keshavarz, Zhi Quan
As power consumption results in greenhouse gas emissions and energy costs for operators, analyzing power consumption in wireless networks and portable devices is of crutial importance. Due to environmental effects resulted from energy generation and exploitation as well as the cost of surging energy, energy-aware wireless systems attract unprecedented attention. Cognitive Radio (CR) is one of the optimal
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Handoff in WLAN/cellular systems based on a hybrid of WLAN bandwidth and ad hoc relaying strategies Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-31 M. Shiri, R. Berangi
The seamless vertical handoff from a wireless local area network (WLAN) to a cellular system yet poses a big challenge. While serving by a WLAN, a mobile node (MN) may enter a region with a low data rate before completing a handoff towards a cellular network. To maintain quality of service, a large amount of WLAN bandwidth must be allocated to compensate for the weakness of MN link. However, this mechanism
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HEVC compatible perceptual multiple description video coding for reliable video transmission over packet networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-27 Muhammad Zeeshan, Muhammad Majid
Multiple description coding (MDC) has been an effective scheme for reliable transmission of videos over error prone networks but requires higher data rates. Recently, perceptual video coding schemes are able to encode videos at a lower data rate, but with the same perceived decoding quality. Such schemes exploit human visual system (HVS) properties to encode videos. Although HVS characteristics have
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A blockchain-based online language learning system Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-25 Xia Sun, Jinglin Zou, Li Li, Min Luo
To check students’ daily language learning tasks and give students corresponding reasonable scores based on their daily behavior is hard for teachers. The existing online language learning systems are vulnerable and easy to be modified by teachers or system managers. Blockchain can provide immutable and trusted storage service and automatic calculation service. Therefore, a blockchain-based online
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Dynamic MODCOD and power allocation in DVB-S2: a hybrid intelligent approach Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-22 Atta-ur Rahman, Sujata Dash, Ashish Kr. Luhach
Adaptive communication for is one of the hottest areas of research in the telecommunication systems including wireless broadcast systems. This is primarily accomplished for sake of boosting the transmission throughput with enhanced quality of service and ideal link utilization. In adaptive communication, various radio transmission parameters like modulation symbol, code-rate and power etc. are carefully
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Multi-objective optimization for information-energy transfer trade-offs in full-duplex multi-user MIMO cognitive networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-22 Xuan-Xinh Nguyen, Ha Hoang Kha, Pham Quang Thai, Hung Quang Ta
This paper considers simultaneous wireless information and power transfer enabled full-duplex multi-user multiple-input multiple-output cognitive networks. By taking into account imperfect channel state information (CSI) of the links toward primary users (PUs), this paper aims to simultaneously optimize two design objectives, namely the achievable sum-rate and sum harvested energy in the secondary
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Development of information collection scheme in internet of things environment for intelligent radiation monitoring systems Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-22 Mohamed I. Gaber, Ashraf A. M. Khalaf, Imbaby I. Mahmoud, Mohamed S. El_Tokhy
The new revolution in computing and wireless communications technologies led to Internet of Things (IoT). Information collection scheme performs an important role for energy efficient utilization and latency awareness in IoT environments. The enhancement of an effectual information collection scheme is crucial to improve the overall performance of the internet of things applications. In this paper
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Application specific thresholding scheme for handover reduction in 5G Ultra Dense Networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-20 Gopalji Gaur, T. Velmurugan, P. Prakasam, S. Nandakumar
Traditional multi-criteria decision making (MCDM) algorithms are used in the handover of user equipment (UE) in an Ultra Dense Network (UDN). UDN refers to the increased density of the Radio Access Technologies (RATs) in a region which leads to the overlapping of the areas covered by individual RATs. MCDM algorithms such as TOPSIS, PROMETHEE and SAW are used to initiate handovers between these RATs
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A simulation model for area coverage and loss probability on mobile sensor networks Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-18 F. C. S. Eiras, W. L. Zucchi
The importance and applications of sensor networks have grown significantly in recent years. These networks are implemented in an ad-hoc manner, where messages pass through multiple intermediate nodes until they reach a central node (sink node). Depending on the type of application, the message loss rate can compromise its performance and even make its use unfeasible. The objective of this work is
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A cloud dynamic online double auction mechanism (DODAM) for sustainable pricing Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-14 S. M. Reza Dibaj, Ali Miri, SeyedAkbar Mostafavi
The Cloud is a new computing paradigm that has experienced exponential growth in recent years. Therefore, success in the cloud services industry can be a challenge, as satisfying both cloud service users and providers is challenging. Cloud users expect to receive a higher service quality with the lowest possible prices. On the other hand, cloud service providers need to maximize their revenues by utilizing
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An improved water-filling algorithm based on power allocation in network MIMO Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-14 M. K. Noor Shahida, Rosdiadee Nordin, Mahamod Ismail
Inter-Cell Interference (ICI) could affect the performance of the LTE-Advanced (LTE-A) system and can be evaluated according to the user’s Signal to Interference and Noise Ratio (SINR). Owing to this, the power and frequency allocation schemes can be utilized in order to attain an optimum trade-off within the obtained SINR and the resulting interference. In this study, power allocation was integrated
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Split labeling diversity for wireless half-duplex relay assisted cooperative communication systems Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-13 Saqib Ejaz, Feng-Fan Yang, Hongjun Xu
Labeling diversity (LD) is a well-known technique proposed for multi-antenna Wireless local area network (WLAN) applications . In this paper, we propose LD for three-terminal cooperative communication schemes i.e., Decode and Forward (DF) and Coded-cooperative (CC) schemes with each terminal using a single antenna for transmission. The Boosted space-time codeword is jointly constructed by source and
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Beam biasing based interference mitigation scheme in millimeter wave satellite cluster with multi-beam receiving Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-11 Wen Zhang, Shanghong Zhang, Gaofeng Cui, Weidong Wang
The directional transmission of millimeter wave (mmWave) beam is applied in the satellite cluster, which can efficiently avoid the interference problem caused by the satellites working in the same frequency band. However, due to the dynamic change of the satellite cluster topology and the randomness of the message transmitted by satellite, there will still be interference. In this paper, in terms of
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Development of arbitrary waveform torsional vibration signal generator Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-09 Qingjie Zhang, Guangxiang Lu, Chengyu Zhang, You Xu
In order to more accurately evaluate or calibrate the electronic torsional vibration test analyzer and analysis method, a torsional vibration signal generator is developed in the present study. The developed device generates a tooth pulse interval sequence based on the inverse solution of the shaft torsional equation. Moreover, a single-frequency signal, inter-harmonic signal, time-varying harmonic
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On the performance of all-optical OFDM based PM-QPSK and PM-16QAM Telecommun. Syst. (IF 1.734) Pub Date : 2020-07-07 Julian Hoxha, Satoshi Shimizu, Gabriella Cincotti
A polarization multiplexed all-optical orthogonal frequency division multiplexing (AO-OFDM) system is investigated analytically and numerically, with 12.5 Gbaud symbol rate, that is compatible with the International Telecommunication Union flexible grid. We demonstrate that fast adaptive filtering is not require at the receiver and chromatic dispersion with polarization mode dispersion can be compensated
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