Browsing School of Computer and Communication Engineering (Articles) by Author "hilaladnan@unimap.edu.my"

Now showing items 1-20 of 21

    • Alleviation noise effect using flexible cross correlation code in spectral amplitude coding optical code division multiple access systems 

      Mohd Rashidi, Che Beson; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Farid, Ghani, Prof. Dr.; Anuar, Mat Safar, Ir. Dr.; Hilal Adnan, Fadhil, Dr. (Engineering and Technology Publishing, 2013)
      A new code for Spectral Amplitude Coding - Optical Code Division Multiple Access (SAC-OCDMA) is proposed and is called Flexible Cross-correlation (FCC) code. The FCC code possesses various advantages; including easy code ...

    • Comparison among different types of advanced modulation formats under four wave mixing effects 

      Haider Jabber, Abed; Norashidah, Md. Din, Prof. Ir. Dr.; Mohammed Hayder, Al-Mansoori; Fairuz, Abdullah, Dr.; Hilal Adnan, Fadhil, Dr. (Ukrainian Journal of Physics., 2013)
      Advanced modulation formats play a significant role for enhancing the bit rate in an optical transmission system. Ultra-long haul transmission distances are intensively investigated to further increase the spectral efficiency ...

    • Comparison of single mode fiber and multimode fiber in deployment of SCM-OCDMA in local area network 

      Aliaa Mamoun, Kabbour; Hilal Adnan, Fadhil, Dr.; Angela, Amphawan; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Mohammad K.H., Al Mustafa (Trans Tech Publications, 2013-12)
      The integration of heterogeneous technologies promotes ubiquity and mobility. Optical code division multiple access (OCDMA) may be deployed in conjunction to SCM to improve the spectral efficiency and enhance the data rate ...

    • Effective design for fiber-to-the-home access network using flexible cross correlation (FCC) code 

      Mohd Rashidi, Che Beson; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Farid, Ghani, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; Anuar, Mat Safar, Ir. Dr. (Trans Tech Publications, 2014-01)
      This paper presented a new class of codes for Fiber-To-The-Home (FTTH) network design based on Spectral Amplitude Coding (SAC) - Optical Code Division Multiple Access (OCDMA) coding approaches. The FTTH SAC-OCDMA network ...

    • Generation of a new hybrid subcarrier multiplexing-SAC-OCDMA system based on FSO 

      Hussein Saad, Mohammed; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; Thanaa Hussein, Abd.; Rashid Ali, Fayadh; Abdul Kram, Rahman (JATIT & LLS, 2013-12)
      This paper proposes hybrid Subcarrier Multiplying-Spectral Amplitude Coding-Optical Code Division Multiple Access system (SCM-SAC-OCDMA) based on the Free Space Optic (FSO) using Multi Diagonal (MD) code is. The proposed ...

    • Impact of multi-diagonal code on high-speed spectral amplitude coding optical code division multiple-access networks 

      Thanaa Hussein, Abd.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; Junita, Mohd Nordin; Mohamad Naufal, Mohamad Saad, Assoc. Prof. (Springer-Verlag, 2013-09)
      In this paper, we present the impact of the multi-diagonal (MD) code for high data rate in spectral amplitude coding optical code division multiple-access (SAC-OCDMA) networks. An MD code structure for SAC-OCDMA system is ...

    • Improved BER based on intensity noise alleviation using developed detection technique for incoherent SAC-OCDMA systems 

      Hamza Mohammed Ridha, Al-Khafaji; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr. (Taylor and Francis Group, LLC., 2012-06)
      The major drawback of incoherent spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) systems is their inherent intensity noise originating due to the incoherency of the broadband light sources. In ...

    • Improvement of the bit error rate of a non-coherent OCDMA system for FTTH network applications 

      Nasim, Ahmed, Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; R. Badlishah, Ahmad, Prof. Dr.; Hilal Adnan, Fadhil, Dr. (Springer Verlag, 2013-12)
      In this paper, an optical code division multiple access (OCDMA) system was analysed to improve the bit error rate (BER) performance at 10 Gbps. The improvements to this system were based on a modified double weight code ...

    • Improving performance in free space optical communication (FSOC) channel through the dual diffuser modulation (DDM) due to atmospheric turbulence 

      Abdul Rahman, Kram; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Anuar, Mat Safar, Ir. Dr.; Hilal Adnan, Fadhil, Dr. (Asian Research Publication Network, 2014-02)
      This paper focus on reduction of atmospheric turbulence effect on free space optical communication using robust modulation that is dual diffuser modulation (DDM) technique. This technique uses two transmitter and differential ...

    • Increasing capacity and suppress the crosstalk by using hybrid optical OFDM/ WDM system 

      Abdullah Omar Ali, Al-Dhaibani; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; Anuar, Mat Safar, Ir. Dr. (Trans Tech Publications, 2014)
      Hybrid optical OFDM/WDM system is proposed to provide longer reach and larger capacity comparing with existing PON systems in order to meet the ever increasing bandwidth demand and data rate of next generation optical ...

    • Investigation the performance of unipolar SAC-OCDMA codes 

      Ibrahim Fadhil, Radhi; Thanaa Hussein, Abd.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr. (AENSI Publications, 2012-01)
      In this paper, we investigate the performance of unipolar Spectral Amplitude Coding Optical Code Division multiple Access (SAC-OCDMA) codes. A performance comparison made between various unipolar SAC-OCDMA codes such as ...

    • New design of Flexible Cross Correlation (FCC) code for SAC-OCDMA system 

      Mohd Rashidi, Che Beson; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Farid, Ghani, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; Anuar, Mat Safar, Ir. Dr. (Elsevier B.V., 2013)
      In this paper, we present, several aspects of unipolar optical code-division multiple access (OCDMA) codes, focusing on the flexible inphase cross-correlation code algorithm and its potential for future optical networks. ...

    • A new FWM reduction technique based on damping selective wavelengths 

      Haider J., Abed; Norashidah, Md. Din, Prof. Ir. Dr.; Mohammed Hayder, Al-Mansoori; Fairuz, Abdullah, Dr.; Noora, Salim; Hilal Adnan, Fadhil, Dr. (Ukrainian Journal of Physics., 2013)
      This paper proposes a new method that can suppress the four-wave mixing using an Optical Drop Multiplexing (ODM) technique. The four-wave mixing (FWM) behavior and the performance of wavelength division multiplexing (WDM) ...

    • 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 ...

    • 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 ...

    • Recent four-wave mixing suppression methods 

      Haider J., Abed; Norashidah, Md. Din, Prof. Ir. Dr.; Mohammed Hayder, Al-Mansoori; Hilal Adnan, Fadhil, Dr.; Fairuz, Abdullah, Dr. (Elsevier GmbH, 2013-08)
      This paper reviews various techniques that have been proposed by many researchers to reduce the effect of four-wave mixing (FWM). A review was suggested to investigate the recent method of each technique and to compare ...

    • 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 ...

    • 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 ...

    • 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 ...