School of Computer and Communication Engineering (Articles): Recent submissions

Now showing items 221-240 of 281

    • Performance of random diagonal code for OCDMA systems using new spectral direct detection technique 

      Hilal Adnan, Fadhil; Syed Alwee Aljunid, Syed Junid; R. Badlishah, Ahmad (Elsevier Inc., 2009-06)
      This paper studies the performance of random diagonal (RD) code for spectral-amplitude coding OCDMA (SAC-OCDMA) system using a newly proposed spectral direct detection technique. RD code is constructed using code segment ...

    • New code structure for spectral amplitude coding OCDMA system 

      Hilal Adnan, Fadhil; Syed Alwee Aljunid, Syed Junid; R. Badlishah, Ahmad (The institute of Electronics, Information and Communication Engineers (IEICE), 2008-10)
      A new code structure for spectral amplitude coding in optical code division multiple access (OCDMA) systems called Smart Direct Detection (SDD) code is proposed. SDD code is constructed using code segment and data segment. ...

    • Novel compact microstrip ultra-wideband filter utilizing short-circuited stubs with less vias 

      Mohammad Shahrazel, Razalli; Alyani, Ismail; Mohamed Adzir, Mahdi (EMW Publishing, 2008)
      We present here a new pattern with compact size of Ultra Wideband (UWB) microwave filter. The filter is based on quarter-wave length short-circuited stubs model. We introduced here a new schematic model by extracting all ...

    • Multi-rate transmissions on spectral amplitude coding optical code division multiple access system using random diagonal codes 

      Hilal Adnan, Fadhil; Syed Alwee Aljunid, Syed Junid; R.Badlishah, Ahmad (Institute of Physics, Wroclaw University of Technology, 2009)
      In this paper, we study the use of a new code called random diagonal (RD) code for spectral amplitude coding (SAC) optical code division multiple access (OCDMA) networks, using fiber Bragg-grating (FBG). FBG consists of a ...

    • The effects of compiler optimizations on embedded system power consumption 

      Shuhaizar, Daud; R. Badlishah, Ahmad; Nukala S., Murhty (Inderscience Enterprises Limited, 2009)
      Power consumption is a subject of serious consideration in embedded systems design because embedded systems are constrained to stringent power and energy requirements. The mission of lowering power consumption and energy ...

    • Compact ultra-wide band microwave filter utilizing quarter-wave length short-circuited stubs with reduced number of vias 

      Mohammad Shahrazel, Razalli; Alyani, Ismail; Mohd Adzir, Mahdi; Mohd Nizar, Hamidon (John Wiley & Sons Inc., 2009-09)
      We present here a novel pattern with compact size of ultra-wide band microstrip filter. The filter is originally modeled from five poles quarter-wavelength short-circuited stubs. It is then, transformed into a new compact ...

    • Rice yield classification using Backpropagation Network 

      Puteh, Saad; Nor Khairah, Jamaludin; Siti Sakira, Kamrudin; Aryati, Bakri; Nursalasawati, Rusli (Penerbit Universiti Utara MalaysiaFakulti Teknologi Maklumat, 2004)
      Among factors that affect rice yield area are diseases, pests and weeds. It is intractable to model the correlation between plant diseases, pests and weeds on the amount of rice yield statistically and mathematically. In ...

    • Redesign the 4:2 compressor for partial product reduction 

      Hussin, R.; Ali Yeon, Md Shakaff; Idris, N.; Zaliman, Sauli; Ismail, R.C.; Kamarudin, A. (International Association of Science and Technology for Development (IASTED) / ACTA Press, 2007)
      In this paper, we attempt to redesign the 4:2 compressors. Since its inception by Weinberger in 1981[1], this concept of compressor has been used in most digital multiplications and multi operand operation scheme. The ...

    • Equation-based construction technique for the OSCDMA zero cross correlation code for the basic matrix 

      Babekir, E.I.; Saad, N.M.; Elfadel, N.; Mohammed, A.; Aziz, A.A.; Anuar, Mat Safar; Syed Alwee Aljunid, Syed Junid; Mohamad Khazani, Abdullah (Institute of Electrical and Electronics Engineering (IEEE), 2007-05)
      In this paper the Double Weight code (DW) family which is used as a proposed code in optical spectral code division multiple access system (OSCDMA) has been studied using the Modified Double Weight code (MDW) which has ...

    • A genetic algorithm approach to VLSI macro cell non-slicing floorplans using binary tree 

      Hasliza, A. Rahim@Samsuddin; Ab Rahman, A. A H; Andaljayalakshmi, G.; R. Badlishah, Ahmad; Wan Nur Suryani Firuz, Wan Ariffin (Institute of Electrical and Electronics Engineering (IEEE), 2008-05)
      This paper proposes an optimization approach for macro-cell placement which minimizes the chip area size. A binary tree method for non-slicing tree construction process is utilized for the placement and area optimization ...

    • Improving system performance through operating system optimization on embedded devices platform 

      Daud, S.; Khalib, Z.I.A.; R. Badlishah, Ahmad (Institute of Electrical and Electronics Engineering (IEEE), 2008-05)
      Implemented with a low speed CPU, small memory footprint, low static memory storage and developed specifically for low power requirement, small embedded devices are significantly affected by processing time. By cutting ...

    • Preliminary development of mini anechoic chamber 

      Hasnain, A.; Imran, M.I.; Rohaiza, Z.S.; Roslan, S.; Takiyuddin, A.A.; Rusnani, A.; Azremi, Abdullah Al Hadi (Institute of Electrical and Electronics Engineering (IEEE), 2007)
      The purpose of mini anechoic chamber is to allow cost effective testing of microwave signal. It is because measurements of the radiation pattern are usually done in an anechoic chamber in order to avoid reflections from ...

    • The performance study of two genetic algorithm approaches for VLSI Macro-Cell layout area optimization 

      Hasliza, A. Rahim@Samsuddin; Rahman, A. A A; R. Badlishah, Ahmad; Wan Nur Suryani Firuz, Wan Ariffin; Muhammad Imran, Ahmad (Institute of Electrical and Electronics Engineering (IEEE), 2008)
      Very large scale integrated (VLSI) design has been the subject of much research since the early 1980s where the VLSI cell placement emerges to be a crucial stage in the chip design. Its area optimization is very important ...

    • Performance of the optical spectrum CDMA systems in FTTH access network 

      Mohamad Othman; Shah, N. S. M.; Noran Azizan, Cholan; Rahmat M. Talib; Samad, M. D. A .; Syed Alwee Aljunid, Syed Junid; Monir Khalil, Abdullah (Institute of Eelectrical and Electronics Engineering (IEEE), 2007-05)
      Double Weight (DW) code is presented here to support fiber-to-the-home (FTTH) access network in point-to-multipoint (P2MP) applications. This code with basic fixed weight of 2 possess ideal cross correlation properties, ...

    • Optical spectrum CDMA: A new code construction with zero cross correlation for double weight code family 

      Babekir, E.I.; Saad, N.M.; Elfadel, N.; Mohammed, A.; Aziz, A.A.; Anuar, Mat Safar; Syed Alwee Aljunid, Syed Junid; Mohamad Khazani, Abdullah (Institute of Electrical and Electronics Engineering (IEEE), 2007)
      This paper concentrates on Double Weight code family as a proposed code for the optical spectrum code division multiple access (OSCDMA) which has one cross correlation value. By eliminating the intersection columns of this ...

    • Design of spectral amplitude coding optical code-division multiple-access system using random diagonal codes 

      Fadhil, H. A.; Syed Alwee Aljunid, Syed Junid; R. Badlishah, Ahmad (Fachverlag Schiele & Schoen GmbH, 2008)
      In this paper we study the use of a new code called Random Diagonal (RD) code for Spectral Amplitude Coding (SAC) optical Code Division Multiple Access (CDMA) networks, RD code is constructed using code level and data ...

    • Construction of a new code for spectral amplitude coding in optical code-division multiple-access systems 

      Hasoon, Feras N.; Mohamad Khazani, Abdullah; Syed Alwee Aljunid, Syed Junid; Sahbudin, Shaari (Society of Photo-Optical Instrumentation Engineers (SPIE), 2007-07)
      An enhanced code structure for spectral amplitude coding in optical code division multiple access systems based on double weight (DW) code families is proposed. Enhanced double weight (EDW) codes possess ideal cross-correlation ...

    • New code structure for spectral amplitude coding in OCDMA system 

      Hasoon, Feras N.; Syed Alwee Aljunid, Syed Junid; Mohamad Khazani, Abdullah; Sahbudin, Shaari (The Institute of Electronics, Information and Communication Engineers, 2007)
      A new code structure for spectral amplitude coding optical code division multiple access system, based on Double Weight (DW) code families is proposed. The DW code has a, fixed weight of two. Modified Double Weight (MDW) ...

    • Performance of OCDMA systems using a complementary subtraction technique 

      Hasoon, Feras N.; Mohamad Khazani, Abdullah; Syed Alwee Aljunid, Syed Junid; Sahbudin, Shaari (Optical Society of America, 2007)
      What we believe to be a new code structure to reduce the multiple access interference in a spectral amplitude coding optical code-division multiple access system based on double-weight code families is proposed. Enhanced ...

    • Performance of OCDMA system using and subtraction technique based on EDW code 

      Shaban, Ihsan; Hasoon, Feras N.; Syed Alwee Aljunid, Syed Junid; Sahbudin, Shaari (Fachverlag Schiele & Schoen GmbH, 2008)
      In this paper we will present a full theoretical analysis for detection scheme proposed for spectral amplitude coding-optical code multiple access (SAC-OCDMA) system that using enhanced double weight (EDW) code, the detection ...