Browsing School of Computer and Communication Engineering (Articles) by Title

Now showing items 145-164 of 281

    • Modelling and simulation of a 1.6 Tb/s optical system based on multi-diagonal code and optical code-division multiple-access 

      Thanaa Hussein, Abd.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; Junita, Mohd Nordin; Mohamad Naufal, Mohamad Saad, Prof. Madya Dr. (Institute of Physical Optics, 2012)
      n this paper we have modelled and simulated a 1.6 Tb/s (100×16 Gb/s) optical system based on spectral amplitude coding for the optical code-division multiple- access (SAC-OCDMA) scheme. In order to reduce the effect of ...

    • A Multi band mini printed omni directional antenna with v-shaped for RFID applications 

      Evizal; Tharek, Abd. Rahman, Prof. Dr.; Shahrul Kamal, Abd Rahim, Prof. Madya Dr. Ir.; Mohd Faizal, Jamlos, Dr. (EMW Publishing, 2011)
      This paper presents a mini multi-band printed omni-directional antenna with v-shaped structure for radio frequency identification (RFID) applications. The proposed multi-band antenna is developed from the initial v-shaped ...

    • Multi-antenna mobile terminal diversity performance in proximity to human hands under different propagation environment conditions 

      Azremi, Abdullah Al Hadi; Papamichael, Vasilis Christos; Vainikainen, Pertti V. (The Institution of Engineering and Technology, 2011-10-27)
      The effective diversity gain (EDG) of a four-element planar inverted-F antenna array, which operates at 3500MHz in the proximity to one hand in data-mode grip and two hands in browsing-mode grip, is predicted using a ...

    • 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 ...

    • Multiband fractal planar inverted F antenna (F-PIFA) for mobile phone application 

      Saidatul, N.A.; Azremi, Abdullah Al Hadi; R. Badlishah, Ahmad, Prof. Madya Dr.; Soh, Ping Jack; Fareq, Malek (EMW Publishing, 2009)
      The design of a novel Fractal planar inverted F antenna (F-PIFA) based on the self affinity property is presented in this paper. The procedure for designing a Fractal Planar Inverted F Antenna is explained and three different ...

    • Multiband fractal planar inverted F antenna (F-PIFA) for mobile phone application 

      Saidatul Norlyana, Azemi; Azremi, Abdullah Al Hadi; R. Badlishah, Ahmad, Prof. Madya Dr.; Soh, Ping Jack; Fareq, Malek, Dr. (EMW Publishing, 2009)
      The design of a novel Fractal planar inverted F antenna (F-PIFA) based on the self affinity property is presented in this paper. The procedure for designing a Fractal Planar Inverted F Antenna is explained and three different ...

    • Multicast-unicast data delivery method in wireless IPv6 networks 

      Abbas, Mehdizadeh; Fazirulhisyam, Hashim; Raja S. Azmir, Raja. Abdullah; Borhanuddin, Mohd Ali; Mohamed, Othman; Sabira, Khatun (Springer US, 2013-02)
      Multicast IPv6 is an efficient way of transmitting data simultaneously to a group of IPv6 users. It has the advantage of reducing the required bandwidth of IPv6 data delivery compared to unicast transmission. The data rate ...

    • Nano and micro porous GaN characterization using image processing method 

      Ahmed, Naser Mahmoud; Ramizy, Asmiet; Hassan, Z.; Ali, Amer; Khalib, Omar; Yarub, Al-Douri, Prof. Madya Dr. (Elsevier GmbH, 2012-06)
      This work reports the fabrication of porous N-GaN structures and their quantitative structural characteristic study based on mathematical morphology analysis using scanning electron microscope (SEM) images. The evaluation ...

    • New approach for evaluation of the performance of spectral amplitude coding-optical code division multiple access system on high-speed data rate 

      Thanaa Hussein, Abd.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; R. Badlishah, Ahmad, Prof. Dr.; Mohd Abdur, Rashid, Dr. (The Institution of Engineering and Technology, 2012-08-14)
      In this study, the authors proposed a new approach to evaluate the system performance of spectral amplitude codingoptical code division multiple access (SAC-OCDMA) systems. The system performance is evaluated based on a ...

    • New approach of Double Weight Code Family Detection using reduced set of Fiber Bragg Gratings 

      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)
      To increase the number of users in the double weight (DW) code family, a mapping technique is applied. This mapping technique increases the number of users but at a cost of unfixed cross-correlation property. The complementary ...

    • New catenated OFDM modulation scheme in zero cross correlation OCDMA at various number of user and effective power 

      ‪Norizan Mohamed, Nawawi‬; Anuar, Mat Safar; Junita, Mohd Nordin; Mohd Rashidi, Che Beson (EDP Sciences, 2017)
      This paper proposes an integration of optical Code Division Multiple Access (OCDMA) with new catenated Orthogonal Frequency Division Multiplexing (OFDM) modulation scheme. This effective combination based on Zero Cross ...

    • A new code design for spectral amplitude coding optical CDMA systems using fiber bragg-grating 

      Thanaa Hussein, Abd.; Syed Alwee Aljunid, Syed Junid, Assoc. Prof. Dr.; Hilal Adnan, Fadhil, Dr. (Spinger, 2013-01)
      In this paper, we present the performance of a new code called Dynamic Cyclic Shift (DCS) code for Spectral Amplitude Coding (SAC) optical Code Division Multiple Access (CDMA) networks, using Fiber Bragg-Grating (FBG). FBG ...

    • New code structure for spectral amplitude coding in OCDMA system 

      Hasoon, Feras N.; Syed Alwee Aljunid, Syed Junid; Mohamad Khazani, Abdullah; Sahbudin, Shaari (The Institute of Electronics, Information and Communication Engineers, 2007)
      A new code structure for spectral amplitude coding optical code division multiple access system, based on Double Weight (DW) code families is proposed. The DW code has a, fixed weight of two. Modified Double Weight (MDW) ...

    • 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. ...

    • 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. ...

    • 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. ...

    • 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) ...

    • A new perceptual mapping model using Lifting Wavelet Transform 

      TahaBasheer, Taha; Phaklen, Ehkan; Ruzelita, Ngadiran (EDP Sciences, 2017)
      Perceptual mappingapproaches have been widely used in visual information processing in multimedia and internet of things (IOT) applications. Accumulative Lifting Difference (ALD) is proposed in this paper as texture mapping ...

    • A new two-code keying scheme for SAC-OCDMA systems enabling bipolar encoding 

      Hamza M. R., Al-Khafaji, Dr.; Razali, Ngah, Assoc. Prof. Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Tharek, Abd. Rahman, Prof. Dr. (Taylor & Francis, 2014-03)
      In this paper, we propose a new two-code keying scheme for enabling bipolar encoding in a high-rate spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) system. The mathematical formulations are ...

    • A new ultrasonic exponential decay pulser technique for low concentrations detection and measurements 

      Muhammed Sabri, Salim; Mohd Fareq, Abd. Malek, Dr.; Naseer, Sabri; Noaman, Mohammad Noaman, Dr.; Khairudi, Mohd Juni; Noor Anida, Abu Talib (Praise Worthy Prize S.r.l., 2013)
      The objective of this study was to design and implement a new ultrasonic pulser with adjustable concentration detection. The new technique based on transmits a multiple ultrasound pulses with decay power through slurry to ...