Browsing Computer Science & Communications by Title

Now showing items 71-90 of 95

    • Rain Attenuation at Terahertz 

      Ishii, S. (Scientific Research Publishing, 2010-10)
      Rain attenuation values were calculated using empirical raindrop-size distributions, which were, Marshall-Palmer (M-P), Best, Polyakova-Shifrin (P-S) and Weibull raindrop-size distributions, and also calculated using a ...

    • Reconfigurable Microstrip Double-Dipole Antennas for Personal Wireless Communications 

      Eldek, Abdelnasser; Abdallah, Abubaker; Manzoul, Mahmoud (Scientific Research Publishing, 2011-04)
      In this paper, a number of reconfigurable antennas are designed to support multiband and wideband wireless applications in different frequency bands in the range between 1 GHz and 6 GHz. The proposed designs consist of ...

    • Resonant Length Formulations for Dual Band Slot Cut Equilateral Triangular Microstrip Antennas 

      Deshmukh, Amit A.; Ray, K. P. (Scientific Research Publishing, 2010-10)
      The dual band equilateral triangular microstrip antennas are realized by cutting the slots of either quarter wave or half wave in length, inside the patch. In this design, however these simpler approximations of slot length ...

    • Sampling and Reconstruction of Zero-Order Hold Signals by Parallel RC Filters 

      Olkkonen, J.T; Olkkonen, H (Scientific Research Publishing, 2011)
      In this work we describe a reconstruction algorithm for zero-order hold (ZOH) waveforms measured by a parallel sam-pling scheme. In the method the ZOH signal is fed to a parallel network consisting of resistor-capacitor ...

    • A Self-Learning Diagnosis Algorithm Based on Data Clustering 

      Tretyakov, Dmitry (Scientific Research Publishing, 2016-08)
      The article describes an approach to building a self-learning diagnostic algorithm. The self-learning algorithm creates models of the object under consideration. The models are formed periodically through a certain time ...

    • A Self-Optimization of the Dynamic Resource Management Based on the Cognitive Radio 

      Raiyn, Jamal (Scientific Research Publishing, 2011-04)
      This paper describes a novel self-optimized approach for resource management based on the cognitive radio in the cellular networks. The cognitive radio techniques offer several features like autonomy, sensing and negotiation. ...

    • A Self-Similar Fractal Cantor Antenna for MICS Band Wireless Applications 

      Srivatsun, Gopalakrishnan; Rani, Sundaresan S.; Krishnan, Gangadaran S. (Scientific Research Publishing, 2011-04)
      Low profile antenna in communication is a new methodology. Fractal geometry is a methodology through which size reduction is achieved. A Self-similar fractal antenna using multicantor technique is proposed and experimentally ...

    • Sensor Placement to Improve the Positioning Performance Based on Angle of Arrival (AOA) 

      Omidali, Behzad; Shirazi, S. S. (Scientific Research Publishing, 2010-07)
      In this paper, a method for sensor placement to improve the placement quality based on angle of arrival of signal in a specific area is proposed. The installation place of sensors may be constrained with specified boundaries. ...

    • Sigma-Point Filters in Robotic Applications 

      Al-Shabi, Mohammad (Scientific Research Publishing, 2015-08)
      Sigma-Point Kalman Filters (SPKFs) are popular estimation techniques for high nonlinear system applications. The benefits of using SPKFs include (but not limited to) the following: the easiness of linearizing the nonlinear ...

    • Software Defined Radio Prototyping with Visual C++ Express and Code Composer Studio 

      Wichlund, Sverre (Scientific Research Publishing, 2012-04)
      The primary goal of this project was educational: to demonstrate Software Defined Radio based prototyping using Visual C++ Express and Code Composer Studio. More specifically an IEEE802.11a Phy [1] compliant baseband ...

    • Speed-Sensitive Weighting Algorithm for Digital Beamforming of Adaptive Antenna Arrays 

      Moghaddam, Shahriar S.; Moghaddam, Mahyar S. (Scientific Research Publishing, 2011-07)
      One of the main objectives of adaptive antenna array processing is reducing the computational complexity and convergence time in a joint state. This article proposes a speed-sensitive adaptive algorithm for estimating the ...

    • Spiral Tuning Stub CPW-Fed UWB Slot Offset, Edge Cleft and Edge Slotted Antennas 

      Jamali, A A.; Gaafar, A; Elaziz, A. A. (Scientific Research Publishing, 2011-07)
      After the release of the unlicensed Ultra Wideband (UWB) spectrum 3.1 GHz to 10.6 GHz for the commercial purposes by the Federal Communications Commission (FCC), industries and academia pay much attention due to its ...

    • A Study of Efficient Power Consumption Wireless Communication Techniques/ Modules for Internet of Things (IoT) Applications 

      Mahmoud, Mahmoud S.; Mohamad, Auday A. H. (Scientific Research Publishing, 2016-04)
      A study of wireless technologies for IoT applications in terms of power consumption has been presented in this paper. The study focuses on the importance of using low power wireless techniques and modules in IoT applications ...

    • Supply and Demand Oriented Energy Management in the Internet of Things 

      Li, Qingjuan; Liu, Hong; Ning, Huansheng; Fu, Yang; Hu, Songde; Yang, Shunkun (Scientific Research Publishing, 2016-01)
      The Internet of Things (IoT) is emerging as an attractive paradigm involving physical perceptions, cyber interactions, social correlations and even cognitive thinking through a cyber-physical-social-thinking hyperspace. ...

    • Survey on Routing in Pocket Switched Network 

      Sarkar, Ratna R.; Rasul, Khadija; Chakrabarty, Amitabha (Scientific Research Publishing, 2015-09)
      Pocket switched Network (PSN) is an emerging research magnet that has been attracting researchers. This paper provides an introduction to PSN and covers some of its basic features and challenges. Continuous connectivity ...

    • Throughput Maximizing Frequency and Power Scheduling for Wireless Ad-Hoc Networks in the Low-SINR Regime 

      Saberi, Nahid (Scientific Research Publishing, 2012-07)
      We study the problem of frequency and power allocation and scheduling at a time-slotted cognitive ad-hoc wireless network, where cognitive nodes share a number of frequency bands and frequency reuse is allowed. In such a ...

    • Towards the Development of Best Data Security for Big Data 

      Yuan, Tian (Communication Network, 2017-11)
      Big data is becoming a well-known buzzword and in active use in many areas. Because of the velocity, variety, and volume of big data, security and privacy issues are magnified, which results in the traditional protection ...

    • A Tree-Based Distributed Permutation Routing Protocol in Multi-Hop Wireless Sensors Network 

      Bomgni, Alain B.; Fute, Elie T.; Sindjoung, Miguel L. F.; Djamegni, Clémentin T. (Scientific Research Publishing, 2016-06)
      A Wireless Sensors Network (WSN) is an ad-hoc network populated by small hand-held commodity devices, running on batteries called stations or sensors. Often used in hostiles and sometimes unreachable environments, stations ...

    • Uniticket: A Third Party Universal E-Ticket System Based on Mobile Phone 

      Hu, Linli; Wang, Yuhao; Li, Dong (Scientific Research Publishing, 2011-07)
      Prepaid energy meters have been widely adopted by utilities in different countries across the world as an innovative solution to the problem of affordability and consumption management. However, the present smart card based ...

    • A Versatile Industrial Timer and Real Time Keeper 

      Yadav, Sagar. G; Narayanankutty, K. A (Scientific Research Publishing, 2011-07)
      Industrial timer requirements are multifaceted. On-delay, off-delay, cyclic or sequential timing requirements, with usual time range varying from seconds to days, depending on the process. Custom build timers cannot provide ...