Open Access Journals: Recent submissions

Now showing items 601-620 of 831

    • Optimal M-BCJR Turbo Decoding: The Z-MAP Algorithm 

      Ouardi, Aissa; Djebbari, Ali; Bouazza, Boubakar S. (Scientific Research Publishing, 2011-10)
      In this paper, we propose a novel idea for improvement performances of the leader M-BCJR algorithm functioning in low complexity. The basic idea consists to localize error instant possibility, and then increase the complexity ...

    • 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 ...

    • 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 ...

    • Optimal Territorial Resources Placement for Multipurpose Wireless Services Using Genetic Algorithms 

      Cacciani, Daniele; Garzia, Fabio; Neri, Alessandro; Cusani, Roberto (Scientific Research Publishing, 2011-07)
      This paper presents a study for finding a solution to the placement of territorial resources for multipurpose wireless services considering also the restrictions imposed by the orography of the territory itself. To solve ...

    • Effect of Changes in Sea-Surface State on Statistical Characteristics of Sea Clutter with X-Band Radar 

      Ishii, Seishiro; Sayama, Syuji; Mizutani, Koichi (Scientific Research Publishing, 2011-07)
      We have made observations of X-band radar sea clutter from the sea surface and sea-surface state in the Uraga Suido Traffic Route, which is used by ships entering and leaving Tokyo Bay, and the nearby Daini Kaiho Sea ...

    • 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 ...

    • 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 ...

    • Hybrid Amplification: An Efficient Scheme for Energy Saving in MIMO Systems 

      Poitau, Gwenael; Kouki, Ammar B. (Scientific Research Publishing, 2012-01)
      In this paper, a new amplification scheme for adaptive MIMO systems is proposed and tested. In this ‘hybrid amplification’ configuration, different amplifiers with different peak powers are used. In this way, each transmitter ...

    • Design of a Low Loss RF Mixer in Ku-Band (12 - 18 GHz) 

      Shah, Sanjeev K.; Chauhan, Rudra P.; Singh, Sanjay; Pandey, Lalit; Singh, Sandeep (Scientific Research Publishing, 2012-01)
      The goal of this paper is to design and develop low conversion loss mixers at Ku Band (12 - 18 GHz) in microstrip line configuration. The Ku-band (Kurtz-under band) is primarily used for satellite Communications, particularly ...

    • Location Based Performance of WiMAX Network for QoS with Optimal Base Stations (BS) 

      Jha, Rakesh K.; Bholebawa, Idris Z.; Dalal, Upena D. (Scientific Research Publishing, 2011-07)
      In this paper we are given concept of our WiMAX (Worldwide Interoperability for Microwave Access) network perfor-mance for QoS monitoring and optimization solution for BS (Base Station) with multimedia application. In 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 ...

    • 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 ...

    • 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 ...

    • Optimization of Threshold for Energy Based Spectrum Sensing Using Differential Evolution 

      Narayanan, K. Aravind; Shivaram, P. Arun; Maheshkumar, M.; Santhoshkumar, K.; Kumar, L. Sathiesh; Kumar, L. Sathiesh; Narayanankutty, K.A (Scientific Research Publishing, 2011-07)
      Interference threshold based on energy setting in cognitive radios is a non-convex optimization problem [4]. The convergence of optimization techniques like Genetic algorithm (GA) takes several iterations to fix this ...

    • MoM Analysis and Design of a Compact Coaxial-to-Microstrip Directional Coupler 

      Benabdallah, Nadia; Benahmed, Nasreddine; Bendimerad, Fethi Tarik; Benyoucef, Boumedienne (Scientific Research Publishing, 2011-04)
      In order to overcome the main drawbacks of coaxial, waveguide, and stripline couplers, the analysis and the design of a compact coaxial-to-microstrip directional coupler convenient for power and antenna control application, ...

    • 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 ...

    • 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 ...

    • Error Resilient IPTV for an IEEE 802.16e Channel 

      Al-Jobouri, Laith; Fleury, Martin; Ghanbari, Mohammed (Scientific Research Publishing, 2011-04)
      Data-partitioning of IPTV video streams is a way of providing graceful quality degradation in a form that will work in good and difficult wireless channel conditions, as experienced by mobile devices. This paper’s proposal ...

    • Experimental Analysis of Voice and Data Transmission Parameters for Mobile Terminals in Cellular Data Networks 

      Jiménez-Licea, Montserrat; Vidal-Beltrán, Sergio; López-Bonilla, José L. (Scientific Research Publishing, 2011-01)
      This work presents the experimental results related to performance measurements in GSM and GPRS cellular data networks. Two Mobile Terminals were used, in order to take place the scenario. Power Level, Power vs Time, ...

    • Capacitive Model and S-Parameters of Double-Pole Four-Throw Double-Gate RF CMOS Switch 

      Srivastava, Viranjay M.; Yadav, Kalyan S.; Singh, Ghanashyam (Scientific Research Publishing, 2011-01)
      In this paper, we have analyzed the Double-Pole Four-Throw Double-Gate Radio-Frequency Complementary Metal-Oxide-Semiconductor (DP4T DG RF CMOS) switch using S-parameters for 1 GHz to 60 GHz of frequency range. DP4T DG RF ...