Browsing Syed Alwee Aljunid Syed Junid, Prof. Ir. Ts. Dr. by Title
Now showing items 45-64 of 123
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Impact of freeway mobility pattern on routing performance of mobile Ad Hoc networks
(Advanced Institute of Convergence IT, 2013-05)In all applications which are based on Mobile Ad-Hoc Networks, node mobility has a significant impact on the performance of routing protocols; consequently affect the usefulness of these applications. This paper presents ... -
Impact of multi-diagonal code on high-speed spectral amplitude coding optical code division multiple-access networks
(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 ... -
Improve the signal to noise ratio using AND subtraction technique in optical CDMA
(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 ... -
Improved BER based on intensity noise alleviation using developed detection technique for incoherent SAC-OCDMA systems
(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 ... -
Improved probability density function using modified-AND detection technique for incoherent SAC-OCDMA systems
(Institute of Electrical and Electronics Engineers (IEEE), 2012-07-03)The rapid progress in video-based Internet applications is increasing the demand for efficient optical communication systems. In this paper, developed detection technique for incoherent spectral-amplitude coding optical ... -
Improvement of the bit error rate of a non-coherent OCDMA system for FTTH network applications
(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 bit error rate of OCDM system using direct detection technique
(Universiti Malaysia Pahang (UMP), 2009-06-20)A new detection technique, namely direct detection technique in OCDM system is introduced in this paper. In OCDM system, the unique code sequence is formed by using spectral components which are inherently arranged. The ... -
Improving bit error rate of OCDMA systems using and subtraction technique
(Institute of Electrical and Electronics Engineering (IEEE), 2006)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 ... -
Improving performance in free space optical communication (FSOC) channel through the dual diffuser modulation (DDM) due to atmospheric turbulence
(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
(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 ... -
Influence of Code Size Variation on the Performance of 2D Hybrid ZCC/MD in OCDMA System
(EDP Sciences, 2018)Several two dimensional OCDMA have been developed in order to overcome many problems in optical network, enhancing cardinality, suppress Multiple Access Interference (MAI) and mitigate Phase Induced Intensity Noise (PIIN). ... -
Intensity noise mitigation in SAC OCDMA systems using a divided spectrum balanced detection scheme
(Institute of Electrical and Electronics Engineers (IEEE), 2013-09)We propose the use of a divided spectrum balanced detection (DSBD) to reduce the intensity noise in spectral amplitude coding (SAC) OCDMA systems. Simulation results show several order of magnitude improvements in bit error ... -
Investigate spectrum-sliced WDM System for FTTH
(Springer-Verlag Berlin Heidelberg, 2011-06-27)In this paper, we have investigated the performance of spectrumsliced WDM system for FTTH network using NRZ modulation format with 2.5 Gb/s bit rates and 0.4-nm channel spacing. The bit-error-rate (BER) measured against ... -
Investigation on Heavy Precipitation Effects over FSO Link
(EDP Sciences, 2017)This paper has examined the performance of free space optic system and scattering effects over the laser propagation. Analysis result based on Optisystem simulation software and rain data collected from Malaysia Meteorological ... -
Investigation the performance of unipolar SAC-OCDMA codes
(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 ... -
MANET Routing Protocols Evaluation: AODV, DSR and DSDV Perspective
(EDP Sciences, 2018)Mobile Ad Hoc Network (MANET) is a set of mobile nodes that communicate with each other to configure an immediate network without utilizing any of infrastructure, the centralized access point or centralized administration ... -
Minimizing correlation effect using zero cross correlation code in spectral amplitude coding optical code division multiple access
(The Optical Society of Japan, 2012-01)The use of minimal multiple access interference (MAI) in code design is investigated. Applying a projection and mapping techniques, a code that has a zero cross correlation (ZCC) between users in optical code division ... -
Modelling and simulation of a 1.6 Tb/s optical system based on multi-diagonal code and optical code-division multiple-access
(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 ... -
Multi-rate transmissions on spectral amplitude coding optical code division multiple access system using random diagonal codes
(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 ... -
New approach for evaluation of the performance of spectral amplitude coding-optical code division multiple access system on high-speed data rate
(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 ...