Browsing Syed Alwee Aljunid Syed Junid, Prof. Ir. Ts. Dr. by Title

Now showing items 102-121 of 123

    • 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 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, ...

    • Phase-induced intensity noise reduction with improved group velocity dispersion tolerance in SAC-OCDMA systems 

      Hamza Mohammed Ridha, Al-Khafaji; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Amphawan, Angela, Dr.; Hilal Adnan, Fadhil, Dr.; Anuar, Mat Safar, Ir. Dr. (Engg Journals Publications, 2013-02)
      The demand for efficient optical communication systems has fuelled considerable research in developing techniques for eradicating phase-induced intensity noise (PIIN) in spectral-amplitude coding optical code-division ...

    • PIN versus Avalanche photodiode gain optimization in zero cross correlation optical code division multiple access system 

      Anuar, Mat Safar, Ir. Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Amir Razif Arief, Jamil Abdullah; Junita, Mohd Nordin; Mohamad Naufal, Mohamad Saad, Assoc. Prof. Dr. (Elsevier GmbH, 2013-02)
      In this paper, we show details of zero cross correlation (ZCC) code development and investigate performance by measuring bit-error-rates compared to other optical code division multiple access (OCDMA) codes using Avalanche ...

    • 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 ...

    • Proposal: Fundamental study of spectral slicing wavelength division multiplexing (WDM) system 

      Nasim, Ahmed; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; R. Badlishah, Ahmad, Prof. Madya Dr.; Muthana, Yassen .K (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      Since the inception of optical fiber communication in 1974, their transmission capacity has experienced a tremendous increase in the years after. Several technology advances spurred its growth. But its use was kept to long ...

    • Random diagonal codes for spectral amplitude coding optical CDMA systems using fiber Bragg-Grating 

      Hilal Adnan, Fadhil; Syed Alwee Aljunid, Syed Junid; R. Badlishah, Ahmad (Institute of Electrical and Electronics Engineering (IEEE), 2008-08-26)
      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, using Fiber Bragg-Grating (FBG), FBG consists of a ...

    • Realization of wavelength-time modified double weigs-button-field 

      Amir Razif Arief, Jamil Abdullah, Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Anuar, Mat Safar, Ir. Dr.; R. Badlishah, Ahmad, Prof. Dr.; Junita, Mohd Nordin; Mohd Rashidi, Che Beson (Trans Tech Publications, 2014)
      Explosive growth of bandwidth demand together with advance in latest communication services and emerging applications have inspired interest in optical code division multiple access (OCDMA). The work focuses on analysis ...

    • Reducing BER of spectral-amplitude coding optical code-division multiple-access systems by single photodiode 

      Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hamza Mohammed Ridha, Al-Khafaji; Amphawan, Angela, Dr.; Hilal Adnan, Fadhil, Dr.; Anuar, Mat Safar, Ir. Dr. (European Optical Society, 2013)
      In this paper, we present a single photodiode detection (SPD) technique for spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) systems. The proposed technique eliminates both phase-induced intensity ...

    • Reducing BER of spectral-amplitude coding optical code-division multiple-access systems by single photodiode detection technique 

      Hamza Mohammed Ridha, Al-Khafaji; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Amphawan, Angela, Dr.; Hilal Adnan, Fadhil, Dr.; Anuar, Mat Safar, Ir. Dr. (European Optical Society, 2013-03)
      In this paper, we present a single photodiode detection (SPD) technique for spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) systems. The proposed technique eliminates both phase-induced intensity ...

    • Smart prolong fuzzy wireless sensor-actor network for agricultural application 

      Naseer, Sabri; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; R. Badlishah, Ahmad, Prof. Dr.; Mohd Fareq, Abd Malek, Dr.; Abid, Yahya, Dr.; Rezuwan, Kamaruddin, Prof. Ir. Dr. Hj.; Muhammed Sabri, Salim (Institute of Information Science, 2012-03)
      The advances in pervasive communication, sensing and computing of wireless sensor networks technologies are leading to the emergence of wireless sensor-actor networks. The spreading merit of WSAN has led to increasing ...

    • SOA/SPD-based incoherent SAC-OCDMA system at 9×5gbps 

      Hamza Mohammed Ridha, Al-Khafaji; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Amphawan, Angela, Dr.; Hilal Adnan, Fadhil, Dr. (The Institute of Electronics, Information and Communication Engineers (IEICE), 2013-03)
      To boost the performance of spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) systems, the need for an effective solution to diminish phase-induced intensity noise (PIIN) is becoming progressively ...

    • 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 ...

    • Spectral amplitude coding OCDMA using AND subtraction technique 

      Syed Alwee Aljunid, Syed Junid; M., Othman; N.S.M., Shah; Samad, M.D.A.; Sahabudin, R.K.Z.; Mohamad Khazani, Abdullah (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 the calculated and simulation results have been done by comparing AND subtraction technique ...

    • 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, ...

    • Spectral efficiency of unipolar SAC-OCDMA system considering noise effects 

      Hamza Mohammed Ridha, Al-Khafaji; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2011-09-25)
      In this paper, we evaluate the spectral efficiency of unipolar spectral-amplitude coding optical code-division multiple access (SAC-OCDMA) system operating with incoherent sources in the present of intensity, shot, and ...

    • Study of direct detection technique for zero cross correlation code in OCDMA 

      Rashidi, C. B. M.; Anuar, Mat Safar; Syed Alwee Aljunid, Syed Junid, Prof. Madya (Institute of Electrical and Electronics Engineers (IEEE), 2010-05-11)
      This paper investigates the performance of direct detection technique for zero cross correlation code in Optical Code Division Multiple Access (OCDMA) which is a better technique to reduce Multi Access Interference (MAI). ...

    • Study of rain attenuation consequence in free space optic transmission 

      Rahman, A. K.; Anuar, Mat Safar; Syed Alwee Aljunid, Syed Junid; Junita, Mohd Nordin (Institute of Electrical and Electronics Engineering (IEEE), 2008)
      This paper is to provide the preliminary result and activities of a research program at UNIMAP on rain attenuation in the Perlis region. The project uses the LaserBit product; model LB- 2500 and LB-5000 which can maximum ...

    • Study of the OCDMA transmission characteristics in FSO-FTTH at various distances, outdoor 

      Muthana Y., Aldouri; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr. (De Gruyter, 2013-06)
      It is important to apply the field Programmable Gate Array (FPGA), and Optical Switch technology as an encoder and decoder for Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) Free Space Optic ...