Research - Dept. of Electronic & Computer Science

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Browsing Research - Dept. of Electronic & Computer Science by Author "Fakih, Awab"

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    Cell Phone Operated Robotic Car
    (2014) Fakih, Awab
    Conventionally, wireless-controlled robots use RF circuits, which have the drawbacks of limited working range, limited frequency range and limited control. Use of a mobile phone for robotic control can overcome these limitations. It provides the advantages of robust control, working range as large as the coverage area of the service provider, no interference with other controllers and up to twelve controls. Although the appearance and capabilities of robots vary vastly, all robots share the features of a mechanical, movable structure under some form of control. The control of robot involves three distinct phase namely perception, processing and action. Generally, the preceptors are sensors mounted on the robot, processing is done by the on-board microcontroller or processor, and the task (action) is performed using motors or with some other actuators. Index Terms— Dual-Tone Multi-Frequency (DTMF), radio control, remote control vehicle, Touch-Tone, Perception, Flash Override
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    Design and Analysis of a Broadband Monopolar Patch Antenna
    (IEEE International Conference, 2014-05) Fakih, Awab
    A new low profile and broadband monopolar patch antenna is proposed. Previously, long rectangular patch antennas were proposed that had a compact structure and high gain, but these antennas were designed for broadside radiation. There are some patch antennas that achieve wide bandwidth by employing a thicker substrate. However, its profile may not be low enough for some cases that cover a very low profile space. We propose a low profile patch antenna with wide bandwidth, high gain and monopole like radiation pattern. The proposed antenna has a bandwidth of 9.4% and gain of 7 dBi with monopole like radiation pattern for an infinite ground plane. While for a finite ground plane bandwidth of 12.3% and gain of 5 dBi is obtained. Keywords- Excitation mode; low profile; monopolar patch antenna; coplanar waveguide fed (CPW); omnidirectional; Method of Moments (MoM).
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    DWDM Link with Multiple Backward Pumped Raman Amplification
    (International Journal of Computational Engineering Research, 2013) Fakih, Awab
    Faced with the challenge of dramatically increasing capacity while constraining costs, carriers have two options either to install new fiber or increase the effective bandwidth of existing fiber. The technology of dense wavelength-division multiplexing (DWDM) has recently resulted in a considerable increase in the transmission capacity of fiber-optic communication systems up to several terabits per second. The further improvement of the transmission capacity of such systems can be achieved through the expansion of the spectral range of WDM transmission toward the short-wavelength region. Therefore in this report we have proposed and investigated the new trends and progress of fiber Raman amplification for dense wavelength division multiplexing photonic communication networks. Forty individual channels carrying PRBS data are transmitted over a 50 km length of ITU-T G.652 single mode dispersive fiber. The design objective is to utilize distributed Raman amplification to compensate for the link attenuation thereby effectively increasing the inter-EDFA span in a longer-haul link. KEYWORDS: PRBS, Digital Crossconnect System (DCS), phonons, Dense wavelength division multiplexing (DWDM), stimulated raman scattering (SRS), raman amplification, pump evolution, EDFA.
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    Radio-over-Fiber System Using Photonic Active Integrated Antennas (PhAIAs)
    (International Journal of Electronics & Communication Technology, 2014) Fakih, Awab
    There is much current interest in low-cost radio-over-fibre (RoF) systems for distribution of mobile-phone and WiFi signals within buildings. In such systems the link gain and packaging cost will be critical. This report describes a low cost scheme for implementing in-building distributed antenna systems using the Photonic Active Integrated Antenna (PhAIA) concept, whereby photonic devices are integrated directly with planar antennas. It is an extension to Active-Integrated-Antenna (AIA) concept from microwave engineering field. The fact that the photonic device and antenna are highly integrated means that very efficient impedance matching can be achieved, which can lead to improved link gain. It could also lead to much reduce packaging and fabrication costs. Keywords: Radio-over-Fiber, Vertical Cavity Surface Emitting Lasers (VCSELs), Photodiodes, Photonic Antenna, WLAN.
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    Radio-over-Fiber system using Photonic Active Integrated Antennas (PhAIAs)
    (International Journal of Electronics & Communication Technology (IJECT), 2014-03) Fakih, Awab
    There is much current interest in low-cost radio-over-fibre (RoF) systems for distribution of mobile-phone and WiFi signals within buildings. In such systems the link gain and packaging cost will be critical. This report describes a low cost scheme for implementing in-building distributed antenna systems using the Photonic Active Integrated Antenna (PhAIA) concept, whereby photonic devices are integrated directly with planar antennas. It is an extension to Active-Integrated-Antenna (AIA) concept from microwave engineering field. The fact that the photonic device and antenna are highly integrated means that very efficient impedance matching can be achieved, which can lead to improved link gain. It could also lead to much reduce packaging and fabrication costs.
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    Real-Time Whiteboard Capture System
    (IOSR Journal of Electrical and Electronics Engineering (IOSRJEEE), 2012) Fakih, Awab
    Real-Time Whiteboard Capture System captures whiteboard lecture video in real time and extracts newly written pen strokes. Unlike other systems, it does not require special instruments such as electronic pen or whiteboard. The captured video images are classified into pen strokes on the whiteboard, foreground (person in front of the whiteboard) and Whiteboard Background Model (whiteboard without the text). The newly written pen strokes are extracted from current image frame and updated to the Whiteboard Background Model. Whiteboard Balancing is done where the colour of the whiteboard is corrected and made completely white. The captured video is processed at 8 frames per second (fps) instead of 25 fps that is output from the camera. Whiteboard balancing and reducing the processing frame rate provide a reduced bandwidth when transmitting whiteboard contents to remote meeting participants. This system can be used in conjunction with other teleconferencing tools such as voice conference and application sharing to improve online meeting experience. Keywords: Whiteboard, real-time, luminance, pixels, archiving, foreground, bandwidth.
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    TRANSMISSION OF DATA USING POWER LINE CARRIER COMMUNICATION SYSTEM
    (International Journal of Electronics Communication and Computer Technology (IJECCT), 2012) Fakih, Awab; Khatik, Ramzan; Shaikh, Afzal; Chaya, Ravindra
    This paper serves as a general and technical reference to transmission of data using a power line carrier communication system which is a preferred choice over Wireless or other Home Networking technologies due to the ease of installation, availability of AC outlets, higher throughput, low cost, reliability and security. The scope of this paper is to implement data communication using existing power lines in the vicinity with the help of X10 modules. Keywords- Interoperability; Home Automation, Throughput, X10 protocol, CEPC.