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

Now showing items 21-40 of 123

    • 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 ...

    • 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 ...

    • 125 KHz ubiquitous RFID tag signal detector system 

      Fazrul Faiz, Zakaria; Anuar, Mat Safar, Ir.; Soh, Ping Jack; Syed Alwee Aljunid, Syed Junid, Prof. Dr. (Institute of Electrical and Electronics Engineers (IEEE), 2007-11-25)
      This paper presents a development of 125 KHz ubiquitous RFID tag signal detector system that can be used as a door lock for home security. The RFID tag signal detector or also known as RFID reader consists of three elements ...

    • 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 ...

    • Comparison of wavelength propagation for free space optical communications 

      Naimullah, B. S S; Mohamad, Othman; Rahman, A. K.; Suzana, I. Sulaiman; Ishak, S.; Salasiah, Hitam; Syed Alwee Aljunid, Syed Junid (Institute of Electrical and Electronics Engineering (IEEE), 2008)
      This paper presents the effect of atmospheric attenuation during severe hazy days for Free Space Optical Communications. The usage of Free Space Optical Communications is still rare in Malaysia due to environment factor. ...

    • 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 ...

    • 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 ...

    • 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 ...

    • Development of Optical Code Division Multiple Access (OCDMA) for Local Area Network (LAN) 

      Yus Irma Md. Yusof (Universiti Malaysia PerlisSchool of Computer and Communication Engineering, 2008-04)
      Nowadays, communication is very important at any place, time and situation. The transmission of the signal can be in wireless or cable. There are three type of division multiple accesses that use in communication system ...

    • Development of double carrier modulation / differential detection technique (DCM/Diff.D) 

      Jacklyn Andrew Alam (Universiti Malaysia PerlisSchool of Computer and Communication Engineering, 2008-04)
      A new transmission and detection technique namely Double Carrier Modulation/ Differential Detection (DCM/Diff.D) are represented. The performance between the DCM/Diff.D techniques with the existing system, Wavelength ...

    • Improve the signal to noise ratio using AND subtraction technique in optical CDMA 

      Mohamad, Othman; Noran Azizan, Cholan; Rahmat M., Talib; Baharadin, E.; Rejab, M. F M; Syed Alwee Aljunid, Syed Junid; Mohamad Khazani, Abdullah (ACTA Press, 2008-04-02)
      AND subtraction technique is proposed and presented in this paper. The theory is being elaborated and the simulation results have been done by comparing AND subtraction technique against Complementary subtraction technique ...

    • Effective design of optical code-division multiple access network using random diagonal codes 

      Hilal Adnan, Fadhil, Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; R. Badlishah, Ahmad, Assoc. Prof. Dr. (Institute of Electrical and Electronics Engineers (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 ...

    • 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 ...

    • Encoder and decoder modules of OCDM system using fiber-bragg grating (FBG) for metro area network 

      Shariffah Zarihan, Syed Zaharim Helmi; Syed Alwee Aljunid, Syed Junid (Institute of Electrical and Electronics Engineering (IEEE), 2008-08-26)
      Encoder and decoder modules of OCDM system using Fiber Bragg Grating (FBG) is presented in this paper. In OCDM system, the unique code sequence is formed by using spectral components which are inherently arranged. This is ...

    • 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. ...

    • 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 ...

    • Design of encoder and decoder module for optical code division multiple access (OCDMA) systems for zero cross correlation (ZCC) code based on arrayed waveguide gratings (AWGs) 

      Syed Mohamad Hamzah, Al-Junid; Sahbudin, Shaari; Syed Alwee Aljunid, Syed Junid; Anuar, Mat Safar (Institute of Electrical and Electronics Engineering (IEEE), 2008-12-01)
      We apply the Arrayed Waveguide Grating (AWGs) method for Encoder and Decoder design for complete transmitter and receiver system. The Encoder and Decoder module will be using the AWG to encode and to decode optical source ...

    • 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 ...