Now showing items 41-60 of 281

    • 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 ...
    • Performance modeling and simulation of microstrip dipole array antenna for WLAN application 

      Soh, Ping Jack; Amir Razif Arief, Jamil Abdullah; Aiza, M. M.; Azremi, Abdullah Al Hadi; Abd Aziz, M. Z A (Institute of Electrical and Electronics Engineering (IEEE), 2008)
      This paper proposed a performance simulation of a two-element, microstrip dipole array antenna for WLAN application. Simulation is done using two different simulation techniques, the circuit model (CM) derived from the ...
    • The effect of conductor line to meander line antenna design 

      Misman, D.; Salamat, I.A.; Abdul Kadir, M.F.; Che Rose, M.R.; Mohd Shah, M. S R; Abd Aziz, M.Z.A.; Husain, M.N.; Soh, Ping Jack (Institute of Electrical and Electronics Engineering (IEEE), 2008)
      In this paper, the meander line antenna (MLA) have been designed to operate at 2.4-GHz for WLAN application. Two different designs of meander line antenna are investigated, without conductor line and with conductor line. ...
    • Spectral amplitude coding OCDMA using and subtraction technique 

      Hasoon, Feras N.; Syed Alwee Aljunid, Syed Junid; Samad, M.D.A.; Mohamad Khazani, Abdullah; Sahbudin, Shaari (Optical Society of America, 2008-03)
      An optical decoding technique is proposed for a spectral-amplitude-coding- optical code division multiple access, namely, the AND subtraction technique. The theory is being elaborated and experimental results have been ...
    • 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 ...
    • 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 ...
    • FPGA based control IC for multilevel inverter 

      Muhammad Imran, Ahmad; Zulkifli, Husin; R. Badlishah, Ahmad; Hasliza, A. Rahim; Mohamad Suhaizal, Abu Hassan; Mohd Nazrin, Md Isa (Institute of Eelectrical and Electronics Engineering (IEEE), 2008-05-13)
      Multilevel inverter is used in applications that need high voltage and high current. The topologies of multilevel inverter have several advantages such as lower THD, lower EMI generation, better output waveform and higher ...
    • Parametric performance simulation of a proximity-coupled fed microstrip dipole array 

      Soh, Ping Jack; Amir Razif Arief, Jamil Abdullah; Aiza, M. M.; Azremi, Abdullah Al Hadi; Abdul Aziz, M.Z A; Rahim, M.K A (Institute of Electrical and Electronics Engineering (IEEE), 2008-05-19)
      This work reports on the performance simulation of two element units of microstrip dipole array antennas for WLAN application. Simulation is done using two different simulation techniques, the circuit model (CM) derived ...
    • Performance of OCDMA systems with new spectral direct detection (SDD) technique using enhanced double weight (EDW) code 

      Mohamad Khazani, Abdullah; Hasoon, Feras N.; Syed Alwee Aljunid, Syed Junid; Sahbudin, Shaari (Elsevier B.V., 2008-09-15)
      This paper investigates the performance of enhanced double weight (EDW) code for spectral-amplitude-coding OCDMA (SAC-OCDMA) system using a newly proposed spectral direct detection (SDD) technique. EDW is the enhanced ...
    • 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. ...
    • Ultra-wide band microwave filter utilizing quarter-wavelength short-circuited stubs 

      Mohammad Shahrazel, Razalli; Alyani, Ismail; Mohd Adzir, Mahdi; Mohd Nizar, Hamidon (Wiley Periodicals, 2008-11)
      Five poles quarter-wave short-circuited stubs is designed and developed to support the ultra-wide band (UWB) applications. The filter, with a total size of 41 mm × 12 mm operates within 2.7-9.83 GHz, produces a fractional ...
    • Spectral amplitude coding OCDMA: Performance analysis on detection schemes using vectors combinatorial code families 

      Hasaan Yousif, Ahmed; Ibrahima, Faye; Saad, N. M.; Syed Alwee Aljunid, Syed Junid, Prof. Madya (Fachverlag Schiele and Schoen GmbH, 2009)
      In Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) system, Multip-user Interference (MUI) problem which increases with the number of users severely limits the performance of the system. However, ...
    • Triple-play services using random diagonal code for spectral amplitude coding OCDMA systems 

      Hilal Adnan, Fadhil; Syed Alwee Aljunid, Syed Junid, Prof. Madya; R. Badlishah, Ahmad (Fachverlag Schiele and Schoen GmbH, 2009)
      In this paper, a new code called Random Diagonal (RD) code for spectral amplitude coding optical code division multiple access (OCDMA) networks is presented. This code is compared with other codes like MQC, MFH and Hadamard ...
    • Improving BER using RD Code for spectral amplitude coding optical CDMA network 

      Fadhil, H.A; Syed Alwee Aljunid, Syed Junid; R. Badlishah, Ahmad (Institute of Electrical and Electronics Engineering (IEEE), 2009)
      A new code for spectral-amplitude coding optical code-division multiple-access system is proposed called random diagonal (RD) code. This code is constructed using code segment and data segment. One of the important properties ...
    • The analytical design of a folded waveguide traveling wave tube and small signal gain analysis using madey's theorem 

      Mohd Fareq, Abd Malek, Dr. (Progress In Electromagnetics Research (PIER), 2009)
      We are developing an analytical model for the design of the folded waveguide traveling wave tube (FWTWT). This analytical model provides the physical view for rapid design optimization of the FWTWT. The design and analysis ...
    • Low power reconfigurable sub-band filter bank ASIC for MP3 decoder 

      Gangamamba, B. P.; Muralidhar, Pendyala V.; Murthy, Nukala Satyanarayana (Inderscience Publishers, 2009)
      There is an ever demanding need to develop low power audio devices using MP3 technology. From the profiled results of MP3 algorithm on ARM processors, it has been observed that the synthesis filter bank in the audio decoder ...
    • "Via-Less” UWB Filter using Patched Microstrip Stubs 

      Mohammad Shahrazel, Razalli; Alyani, Ismail; Mohamed Adzir, Mahdi; Mohd Nizar, Hamidon (VSP (imprint of Brill), 2009)
      This paper presents an Ultra-Wide Band (UWB) microstrip filter which is initially modeled from a quarter-wavelength short-circuited stubs, without the use of any vias. All vias that provide short circuit stubs are replaced ...
    • A flexible and reliable architecture for mobile agent security 

      Ghossoon, Mohammed Waleed Al-Saadoon (Science Publications, 2009)
      Problem statement: Wireless application protocol is a protocol that makes it possible to surf the Internet from a cellular phone or other handheld wireless. Many of us that surf the Internet from home with a 56 kbps modem ...
    • Embedded smart camera performance analysis 

      Kahar, N.F; R.Badlishah, Ahmad; Zulkifli, Hussin; Ahmad Nasir, Che Rosli (Institute of Electrical and Electronics Engineering (IEEE), 2009)
      Increasingly powerful integrated circuits are making an entire range of new applications possible. Recent technological advances are enabling a new generation of smart cameras that represent a quantum leap in sophistication. ...
    • Novel compact "via-less" ultra-wide band filter utilizing capacitive microstrip patch 

      Mohammad Shahrazel, Razalli; Alyani, Ismail; Mohamed Adzir, Mahdi; Mohd Nizar, Hamidon (EMW Publishing, 2009)
      This paper presents a novel compact "via-less" UWB filter derived from a quarter-wavelength short-circuited stubs model. In this compact "via-less" UWB filter, there is no connecting vias as short circuit elements. Unlike ...