Browsing School of Computer and Communication Engineering (Articles) by Subject "Wireless communication systems"

Now showing items 1-17 of 17

    • 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 ...

    • Effects of the Random Diagonal code link parameters on the performance of an OCDMA scheme for high-speed access networks 

      Hilal Adnan, Fadhil; Syed Alwee Aljunid, Syed Junid; R.Badlishah, Ahmad (Elsevier Inc., 2009-06)
      In this paper, we study the performance of optical code-division multiple access (OCDMA) systems using Random Diagonal (RD) code under various link parameters. This code which can be constructed using address segment and ...

    • 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 ...

    • Improving bit error rate of OCDMA systems using and subtraction technique 

      Syed Alwee Aljunid, Syed Junid; Shariffah Zarihan, Syed Zaharim Helmi; Anuar, Mat Safar; Junita, Mohd Nordin; Norsuhaida, Ahmad; Samad, M.D.A.; Mohamad Khazani, Abdullah (Institute of Electrical and Electronics Engineering (IEEE), 2006)
      A new detection scheme, namely AND subtraction technique is proposed and presented in this paper. The theory is being elaborated and experimental results have been done by comparing Double-Weight (DW) code against the ...

    • A MIMO LMS adaptive equalization approach in simulated radar emission 

      Junita, Mohd Nordin; Anuar, Mat Safar; Azremi, Abdullah Al Hadi; Norshaida, Ahmad; Shariffah Zarihan, Syed Zaharim Helmi; Bukhairi, M.N (Institute of Electrical and Electronics Engineering (IEEE), 2006)
      MIMO technology has attracted a lot of attention in the area of wireless communications such as radar applications, in term of increasing the spectral efficiency. This research paper will present the model of Simulated ...

    • 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 ...

    • New design of spectral amplitude coding in OCDMA with zero cross-correlation 

      Anuar, Mat Safar; Syed Alwee Aljunid, Syed Junid; N. M., Saad; S. M., Hamzah (Elsevier B.V. (Imprint: NORTH-HOLLAND), 2009-07)
      A zero cross-correlation (ZCC) code is proposed to reduce the impact of system impairment and multiple access interference (MAI) in spectral amplitude coding optical code division multiple access (SAC-OCDMA) system. ...

    • 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 ...

    • Optical Spectrum CDMA: a new code construction for Double Weight Code Family 

      Mohammed, A; Saad, N.M; Syed Alwee Aljunid, Syed Junid; Anuar, Mat Safar; Mohamad Khazani, Abdullah (Institute of Electrical and Electronics Engineering (IEEE), 2006)
      This paper handles the Double Weight (DW) Code family, one of the proposed codes used in Spectral-Amplitude-Coding Optical Code Division Multiple Access (OCDMA). The DW code family is constructed using a matrix technique ...

    • Performance analysis of optical zero cross correlation in OCDMA system 

      Anuar, Mat Safar; Syed Alwee Aljunid, Syed Junid; R. Badlishah, Ahmad; Saad, N.M.; Andonovic, I. (Asian Network for Scientific Information, 2007)
      We propose a new code structure for Spectral-Amplitude Coding Optical Code Division Multiple Access (OCDMA) systems with zero cross-correlation and theoretically demonstrate the performance of this code by using a direct ...

    • 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, 2009-01-31)
      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 ...

    • 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 ...

    • The potentials of OCDM technique for local area network 

      Syed Alwee Aljunid, Syed Junid; Dayang Khadijah, Hamzah; Shariffah Zarihan, Syed Zaharim Helmi; Anuar, Mat Safar; Azremi, Abdullah Al Hadi; Mohamad Khazani, Abdullah (Institute of Electrical and Electronics Engineering (IEEE), 2006)
      Evolution of the optical fiber systems is currently seeing the general acceptance of wavelength division multiplexing (WDM) as the best mechanisms in increasing the transmission capacity of fiber optics. However, there are ...

    • 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 ...

    • Spectral amplitude coding OCDMA using and subtraction technique 

      Syed Alwee Aljunid, Syed Junid; Hasoon, Feras N.; Samad, M.D.A.; Mohamad Khazani, Abdullah; Othman, M.; Sahbudin, Shaari (Institute of Electrical and Electronics Engineering (IEEE), 2007)
      A new detection scheme, namely AND subtraction technique is proposed and presented in this paper. The theory is being elaborated and experimental results have been done by comparing Double-Weight (DW) code against the ...

    • 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 ...

    • Web-based wireless data acquisition system using 32bit single board computer 

      R. Badlishah, Ahmad; Wan Muhamad Azmi, Mamat; Mohamad Rizon, Mohamed Juhari; Shuhaizar, Daud; Arshad, N.W. (Institute of Electrical and Electronics Engineering (IEEE), 2008)
      The design and architecture of a web-based wireless data acquisition system are presented. This system provides a web interface for remote monitoring of sensors deployed which connected using wireless technology. The design ...