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

Now showing items 77-96 of 123

    • Optical Code Division Multiple Access (OCDMA) using Double Weight (DW) Codes for local area network 

      Dayang Khadijah, Hamzah; Syed Alwee Aljunid, Syed Junid, Prof. Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2010-05-11)
      This paper describes the performance evaluation of the Optical Code Division Multiple Access (OCDMA) technique using Double Weight (DW) Code. This technique was implemented in local area environment which is applied in ...

    • Optical code sequences for spectral-amplitude-coding optical CDMA systems 

      Syed Alwee Aljunid, Syed Junid; M., Ismail; A. R., Ramli; Borhanuddin, M. Ali; Mohamad Khazani, Abdullah (Universiti Malaysia Perlis (UniMAP)Pejabat Timbalan Naib Canselor (Penyelidikan dan Inovasi), 2007-01)
      OPTICAL SPECTRUM code-division multiple-access (OSCDMA) is a multiplexing technique adapted from successful implementation in wireless networks. In OSCDMA each user is assigned with a code sequence code that serves ...

    • Optical domain service differentiation using spectral-amplitude-coding 

      S.B., Ahmad Anas; Mohamad Khazani, Abdullah; M., Mokhtar; Syed Alwee Aljunid, Syed Junid; S.D., Walker (Elsevier Inc., 2009)
      We have implemented a new service differentiation technique in the optical domain using a spectral-amplitude-coding (SAC) variant of optical code division multiple access (OCDMA). The newly developed code, named KS ...

    • Optical Generation of 80 GHz Downstream Data in Radio over Fiber System Based on Stimulated Brillouin Scattering 

      M. M. H., Husaini; Mohd Rashidi, Che Beson; Anuar, Mat Safar; Rosdisham, Endut; Syed Alwee Aljunid, Syed Junid (EDP Sciences, 2017)
      In this work, we proposed Stimulated Brillouin Scattering (SBS) in an optical generation of millimeter waves (mm-waves) for radio over fiber (RoF) system with the transmission of 2.5 Gbps data rate. SBS method is achieved ...

    • 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 ...

    • 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 ...

    • Optimization FSO Performance Under Strong Turbulence Effect By Enhanced New Carrier Data Transmission Technique 

      Ummul K.R.; Anuar, Mat Safar; Rahman, A.K.; Mohd Rashidi, Che Beson; Syed Alwee Aljunid, Syed Junid (EDP Sciences, 2017)
      This paper focus on mitigating the atmospheric turbulence effect in free space optical communication using a dual diffuser modulation (DDM) technique. The most deteriorate the FSOC is scintillation where it affected the ...

    • Optimum transmit power for optical CDMA transmission systems considering nonlinear stimulated brillouin scattering (SBS) effects 

      Fuad, A. Hatim; Feras, N. Hasoon; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Sahbudin, B. H. Shaari (Institute of Electrical and Electronics Engineers (IEEE), 2008-12-01)
      The optimum transmit power for an optical code division multiple access (OCDMA) system based on enhanced double weight (EDW) code is evaluated for various transmission distances considering the nonlinear stimulated Brillouin ...

    • OSCDMA Double Weight Code: a simplified formula code construction technique 

      Mohammed, A.; Babekir, E.I.; Elfadel, N.; Saad, N.M.; Anuar, Mat Safar; Syed Alwee Aljunid, Syed Junid; Mohamad Khazani, Abdullah (Institute of Electrical and Electronics Engineering (IEEE), 2007)
      This paper the construction of the double weight (DV) code family, one the recent codes for spectral amplitude coding (SAC) is studied. The DW code family is constructed using a matrix construction technique and a mapping ...

    • Performance analysis of hybrid OCDMA/WDM system for metro area network 

      Nasim, Ahmed, Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; R. Badlishah, Ahmad, Prof. Dr.; Nizam Uddin, Ahamed; Matiur J., Rahman (Walter de Gruyter Berlin/Boston, 2014-03)
      In this study a hybrid spectral amplitude coding for optical code division multiple access (i.e., called OCDMA) over wavelength division multiplexing (WDM) network is proposed to support large number of subscribers. The ...

    • Performance analysis of multipath routing based on source routing 

      N. Z., Ali; R. Badlishah, Ahmad, Prof. Madya Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Madya (Universiti Malaysia Pahang (UMP), 2009-06-20)
      Mobile AdHoc Networks (MANETs) is a collection of mobile hosts forming a temporary network without the aid of any established infrastructure or centralized administration, and they interact with each other over wireless ...

    • 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 analysis of wavelength multiplexed SAC OCDMA codes in beat noise mitigation in SAC OCDMA systems 

      Ahmed M., Alhassan; Nasreen, Badruddin, Dr.; Mohamad Naufal, Mohamad Saad; Syed Alwee Aljunid, Syed Junid, Prof. Dr. (European Optical Society, 2013-07)
      In this paper we investigate the use of wavelength multiplexed spectral amplitude coding (WM SAC) codes in beat noise mitigation in coherent source SAC OCDMA systems. A WM SAC code is a low weight SAC code, where the whole ...

    • Performance analysis on MDW code in FTTH access network using PIN & APD photodiode 

      Muthana. Y., Aldouri; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; R. Badlishah, Ahmad, Prof. Madya Dr.; Hilal Adnan, Fadhil, Dr. (Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)
      In order to comprise between PIN photo detector and avalanche photodiodes in a system used modified double weight (MDW) code to be a performance of the optical spectrum CDMA in FTTH network with point-to-multi-point ...

    • Performance comparison of Triangle Antenna of 60 GHz for 5G Wireless Communication Network 

      Aishah, S. A.; Mohd Rashidi, Che Beson; Saidatul Norlyana, Azemi; Syed Alwee Aljunid, Syed Junid (EDP Sciences, 2017)
      In this paper microstrip triangle with slot antenna for 5G wireless communication network are proposed. The microstip triangle antenna is design and operating 60 GHz milimeter-wave frequency band and it's suitable for 5G ...

    • Performance enhancement of OCDMA system using NAND detection with modified double weight (MDW) code for optical access network 

      Nasim, Ahmed; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; R. Badlishah, Ahmad, Prof. Dr.; Mohd Abdur Rashid, Dr. (Elsevier GmbH, 2013-07)
      In this paper, we have extensively analyzed the OCDMA system performance using modified double weight (MDW) code with NAND detection technique as newly developed by the authors. In theoretical analysis, various noises and ...

    • Performance Evaluation of a Novel Optimization Sequential Algorithm (SeQ) Code for FTTH Network 

      Fazlina, C. A. S.; Mohd Rashidi, Che Beson; Rahman, A. K.; Syed Alwee Aljunid, Syed Junid (EDP Sciences, 2017)
      The SeQ codes has advantages, such as variable cross-correlation property at any given number of users and weights, as well as effectively suppressed the impacts of phase induced intensity noise (PIIN) and multiple access ...

    • Performance evaluation of downlink design based on free space optical system 

      Anis Afina, Azman; Mohd Rashidi, Che Beson; Rahman, A. K.; Syed Alwee Aljunid, Syed Junid; Yaakob, S. (EDP Sciences, 2017)
      In this paper, the performance of downlink design utilizing the free space optic (FSO) is presented. The permissible BER of 10-58 is achieved when the system utilized 40 cm aperture diameter. The highest system sensitivity ...

    • Performance evaluation of Fi-Wi network based on SCM-optical code division multiple access architecture 

      Junita, Mohd Nordin; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Rosemizi, Abd. Rahim; Anuar, Mat Safar, Ir. Dr.; Amir Razif Arief, Jamil Abdullah, Dr.; R. Badlishah, Ahmad, Prof. Dr.; Mohamad Naufal, Mohamad Saad (Elsevier GmbH, 2013-10)
      This paper investigates the performance of a spectral amplitude coding (SAC)-OCDMA system design utilizing subcarrier multiplexing techniques for use in the popular fiber-wireless (Fi-Wi) technology. Zero cross correlation ...

    • Performance evaluation of SAC-OCDMA using direct detection techniques 

      Norazimah, M. Z.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr. (Universiti Malaysia Perlis (UniMAP), 2012-06-18)
      In optical code division multiple access (OCDMA), noise give a big effect in degrading the performance of the system. Theoretically, direct detection technique can successfully suppressed or eliminate the dominant noise ...