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  • Open Access

    ARTICLE

    A Formal Testing Model for Operating Room Control System Using Internet of Things

    Moez Krichen1, Seifeddine Mechti2, Roobaea Alroobaea3, Elyes Said4, Parminder Singh5, Osamah Ibrahim Khalaf6, Mehedi Masud3,*

    CMC-Computers, Materials & Continua, Vol.66, No.3, pp. 2997-3011, 2021, DOI:10.32604/cmc.2021.014090

    Abstract Technological advances in recent years have significantly changed the way an operating room works. This work aims to create a platform to solve the problems of operating room occupancy and prepare the rooms with an environment that is favorable for all operations. Using this system, a doctor can control all operation rooms, especially before an operation, and monitor their temperature and humidity to prepare for the operation. Also, in the event of a problem, an alert is sent to the nurse responsible for the room and medical stuff so that the problem can be resolved.… More >

  • Open Access

    ARTICLE

    Quintuple Band Antenna for Wireless Applications with Small Form Factor

    Amir Haider1, Tayyaba Khan2, MuhibUr Rahman3, Byung Moo Lee1, Hyung Seok Kim1,*

    CMC-Computers, Materials & Continua, Vol.66, No.3, pp. 2241-2251, 2021, DOI:10.32604/cmc.2021.013908

    Abstract A coplanar waveguide-fed quintuple band antenna with a slotted circular-shaped radiator for wireless applications with a high isolation between adjacent bands is presented in this paper. The proposed antenna resonates at multiple frequencies with corresponding center frequencies of 2.35, 4.92, 5.75, 6.52, and 8.46 GHz. The intended functionality is achieved by introducing a circular disc radiator with five slots and a U-shaped slot in the feed. The proposed antenna exhibits coverage of the maximum set of wireless applications, such as satellite communication, worldwide interoperability for microwave access, wireless local area network (WLAN), long-distance radio telecommunications,… More >

  • Open Access

    ARTICLE

    Fuzzy Based Adaptive Deblocking Filters at Low-Bitrate HEVC Videos for Communication Networks

    Anudeep Gandam1,*, Jagroop Singh Sidhu2

    CMC-Computers, Materials & Continua, Vol.66, No.3, pp. 3045-3063, 2021, DOI:10.32604/cmc.2021.013663

    Abstract In-loop filtering significantly helps detect and remove blocking artifacts across block boundaries in low bitrate coded High Efficiency Video Coding (HEVC) frames and improves its subjective visual quality in multimedia services over communication networks. However, on faster processing of the complex videos at a low bitrate, some visible artifacts considerably degrade the picture quality. In this paper, we proposed a four-step fuzzy based adaptive deblocking filter selection technique. The proposed method removes the quantization noise, blocking artifacts and corner outliers efficiently for HEVC coded videos even at low bit-rate. We have considered Y (luma), U… More >

  • Open Access

    REVIEW

    Toward 6G Communication Networks: Terahertz Frequency Challenges and Open Research Issues

    Mohammed H. Alsharif1, Mahmoud A. M. Albreem2, Ahmad A. A. Solyman3, Sunghwan Kim4,*

    CMC-Computers, Materials & Continua, Vol.66, No.3, pp. 2831-2842, 2021, DOI:10.32604/cmc.2021.013176

    Abstract Future networks communication scenarios by the 2030s will include notable applications are three-dimensional (3D) calls, haptics communications, unmanned mobility, tele-operated driving, bio-internet of things, and the Nano-internet of things. Unlike the current scenario in which megahertz bandwidth are sufficient to drive the audio and video components of user applications, the future networks of the 2030s will require bandwidths in several gigahertzes (GHz) (from tens of gigahertz to 1 terahertz [THz]) to perform optimally. Based on the current radio frequency allocation chart, it is not possible to obtain such a wide contiguous radio spectrum below 90… More >

  • Open Access

    ARTICLE

    Fog-Based Secure Framework for Personal Health Records Systems

    Lewis Nkenyereye1,*, S. M. Riazul Islam2, Mahmud Hossain3, M. Abdullah-Al-Wadud4, Atif Alamri4

    CMC-Computers, Materials & Continua, Vol.66, No.2, pp. 1937-1948, 2021, DOI:10.32604/cmc.2020.013025

    Abstract The rapid development of personal health records (PHR) systems enables an individual to collect, create, store and share his PHR to authorized entities. Health care systems within the smart city environment require a patient to share his PRH data with a multitude of institutions’ repositories located in the cloud. The cloud computing paradigm cannot meet such a massive transformative healthcare systems due to drawbacks including network latency, scalability and bandwidth. Fog computing relieves the load of conventional cloud computing by availing intermediate fog nodes between the end users and the remote servers. Assuming a massive More >

  • Open Access

    ARTICLE

    MIMO-Terahertz in 6G Nano-Communications: Channel Modeling and Analysis

    Shahid Bashir1, Mohammed H. Alsharif2, Imran Khan3, Mahmoud A. Albreem4, Aduwati Sali5, Borhanuddin Mohd Ali5, Wonjong Noh6,*

    CMC-Computers, Materials & Continua, Vol.66, No.1, pp. 263-274, 2021, DOI:10.32604/cmc.2020.012404

    Abstract With the development of wireless mobile communication technology, the demand for wireless communication rate and frequency increases year by year. Existing wireless mobile communication frequency tends to be saturated, which demands for new solutions. Terahertz (THz) communication has great potential for the future mobile communications (Beyond 5G), and is also an important technique for the high data rate transmission in spatial information network. THz communication has great application prospects in military-civilian integration and coordinated development. In China, important breakthroughs have been achieved for the key techniques of THz high data rate communications, which is practically… More >

  • Open Access

    ARTICLE

    Fingerprint-Based Millimeter-Wave Beam Selection for Interference Mitigation in Beamspace Multi-User MIMO Communications

    Sangmi Moon1, Hyeonsung Kim1, Seng-Phil Hong2, Mingoo Kang3, Intae Hwang1,*

    CMC-Computers, Materials & Continua, Vol.66, No.1, pp. 59-70, 2021, DOI:10.32604/cmc.2020.013132

    Abstract Millimeter-wave communications are suitable for application to massive multiple-input multiple-output systems in order to satisfy the ever-growing data traffic demands of the next-generation wireless communication. However, their practical deployment is hindered by the high cost of complex hardware, such as radio frequency (RF) chains. To this end, operation in the beamspace domain, through beam selection, is a viable solution. Generally, the conventional beam selection schemes focus on the feedback and exhaustive search techniques. In addition, since the same beam in the beamspace may be assigned to a different user, conventional beam selection schemes suffer serious… More >

  • Open Access

    ARTICLE

    A Genetic Algorithm Optimization for Multi-Objective Multicast Routing

    Ahmed Y. Hamed1, Monagi H. Alkinani2, M. R. Hassan3,*

    Intelligent Automation & Soft Computing, Vol.26, No.6, pp. 1201-1216, 2020, DOI:10.32604/iasc.2020.012663

    Abstract Many applications require to send information from a source node to multiple destinations nodes. To support these applications, the paper presents a multi-objective based genetic algorithm, which is used in the construction of the multicast tree for data transmission in a computer network. The proposed algorithm simultaneously optimizes total weights (cost, delay, and hop) of the multicast tree. Experimental results prove that the proposed algorithm outperforms a recently published Multi-objective Multicast Algorithm specially designed for solving the multicast routing problem. Also, the proposed approach has been applied to ten-node and twenty-node network to illustrate its More >

  • Open Access

    ARTICLE

    An Efficient Energy Routing Protocol Based on Gradient Descent Method in WSNs

    Ru Jin*, Xinlian Zhou, Yue Wang

    Journal of Information Hiding and Privacy Protection, Vol.2, No.3, pp. 115-123, 2020, DOI:10.32604/jihpp.2020.010180

    Abstract In a wireless sensor network [1], the operation of a node depends on the battery power it carries. Because of the environmental reasons, the node cannot replace the battery. In order to improve the life cycle of the network, energy becomes one of the key problems in the design of the wireless sensor network (WSN) routing protocol [2]. This paper proposes a routing protocol ERGD based on the method of gradient descent that can minimizes the consumption of energy. Within the communication radius of the current node, the distance between the current node and the More >

  • Open Access

    ARTICLE

    Research on Intelligent Energy Storage Control Method with Ethernet Communication

    Lu Wang1,2, Yulong Guo2, Jianbin Liang3,*, Haitao Tian4

    Energy Engineering, Vol.117, No.6, pp. 471-480, 2020, DOI:10.32604/EE.2020.011131

    Abstract The increasingly severe global energy crisis has brought great challenges to the energy field, and renewable energy power generation system has been widely concerned because of its characteristics of green and inexhaustible. However, renewable energy also has some limitations in its specific application, and affects the grid-connected power generation of new energy. In this paper, based on the background of photovoltaic power station, the intelligent energy storage control method for single inverter is put forward to assist a single inverter, and the DC component of fluctuating power is extracted by using the moving average function; More >

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