Browsing Computer Science & Communications by Title

Now showing items 60-79 of 95

    • P2P Model Based on Isolated Broadcast Domains 

      Li, Jianchun; Guo, Gongbing; Li, Jianyong; Huang, Daoying (Scientific Research Publishing, 2012-04)
      Resource location is the most important issue for Peer-to-Peer (P2P) system and flooding is the fundamental mechanism for unstructured P2P systems. Redundant messages will exponential growth with flooding scope increasing ...

    • The Performance Gain of Cognitive Radio in Adaptive Modulation Scheme 

      Foukalas, Fotis (Scientific Research Publishing, 2010-07)
      Cognitive radio is considered as one of the main enablers for provisioning dynamic and flexible spectrum/channel allocation in wireless communications. The reliable data transmission over cognitive radio should employ ...

    • Performance of Double-Pole Four-Throw Double-Gate RF CMOS Switch in 45-nm Technology 

      Srivastava, Viranjay M. (Scientific Research Publishing, 2010-10)
      In this paper, we have investigated the design parameters of RF CMOS switch, which will be used for the wireless tele-communication systems. A double-pole four-throw double-gate radio-frequency complementary-metal-oxide-semicon- ...

    • Performance Study of Multi-Path in VANETs and Their Impact on Routing Protocols 

      Wu, Jing; Wang, Yuhao (Scientific Research Publishing, 2011-07)
      Modeling complicated vehicular traffic behavior and analyzing effects on the communication performance of routing protocols taken by environmental factors have been a challenging task for the past several years. In this ...

    • Performance Tradeoff with Routing Protocols for Radio Models in Wireless Sensor Networks 

      Bala, Manju; Awasthi, Lalit (Scientific Research Publishing, 2011-04)
      In this paper, we have simulated and evaluated the performance tradeoff with routing protocols: Constrained Flooding, the Real-Time Search and the Adaptive Tree on MICA and MICAz platform with different radio models using ...

    • A Perspective on Traffic Measurement Tools in Wireless Networks 

      Siddamallaiah, Ramesh B.; Subramanian, Gowrishankar; Satyanarayana, Piriyapatna S. (Scientific Research Publishing, 2010-07)
      To understand the characteristics of the wireless networks, the network usage data from wireless measurement tools are essential. The data collection is a process of collecting the network time-varying information in ...

    • The Possibility of Using RFID System to Automate and Integrate the Attendance of Professors and Students in the Classroom 

      Meghdadi, Majid; Azar, Ahad A. (Scientific Research Publishing, 2016-11)
      One of the most important goals followed in most systems is to increase efficiency, reduce errors and enhance ease of data entry tasks such as better services in organizations. Therefore, the use of intelligent tools is ...

    • Power Efficient Scheduled-Based Medium Access Control Protocol over Wireless Sensor Networks 

      Khan, Muhammad S.; Alajlan, Abrar; Almasri, Marwah (Scientific Research Publishing, 2016-02)
      The flexible use of sensors has made them an attractive device to be deployed in almost every field of life such as health, military and home. Recent advancement in electronics and wireless communications has witnessed the ...

    • Practical Approaches to Securing an IT Environment 

      John C, Fuller; Cofie, Penrose; Warsame H, Ali; Emmanuel S., Kolawole (Communication and Network, 2017-11)
      There are a number of IT Security journals available in the literature but none of these research papers have practically specified approaches to secure the IT environment at large. In this paper, more emphases will be ...

    • Processor for Measuring Radio Network Design Quality 

      Gomez-Pulido, Juan A.; Mendes, Silvio P.; Vega-Rodriguez, Miguel A.; Cordeiro, Paulo J.; Sanchez-Perez, Juan M. (Scientific Research Publishing, 2011-07)
      In this paper we present the design and prototyping of an arithmetic processor based on reconfigurable technology, whose purpose is to determine in a parallel manner the quality of the solution in a radio network design ...

    • Prospects for Mobile Health in Pakistan and Other Developing Countries 

      Burney, Aqil; Abbas, Zain; Mahmood, Nadeem; Arifeen, Qamar-ul (Scientific Research Publishing, 2013-05)
      akistan is a developing country with more than half of its population located in rural areas. These areas neither have sufficient health care facilities nor a strong infrastructure that can address the health needs of the ...

    • 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 ...