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Universiti Kebangsaan Malaysia
(63 results)-
White Papers
An Improved Algorithm for Channel Estimations of OFDM System Based Pilot Signal
June 17, 2009, 12:00am PDT
This paper presents a new algorithm for the channel estimation of the OFDM system based on a pilot signal for the new generation of high data rate communication systems. In Orthogonal Frequency...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Design Analysis of a Slotted Microstrip Antenna for Wireless Communication
June 16, 2009, 12:00am PDT
In this paper, a new design technique for enhancing bandwidth that improves the performance of a conventional microstrip patch antenna is proposed. This paper presents a novel wideband probe fed...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Comparative Review Study of Reactive and Proactive Routing Protocols in MANETs
April 6, 2010, 12:00am PDT
Mobile Ad Hoc NETworks (MANETs) are generating a lot of interests due to 3G and 4G activities. The dynamic nature of these networks demands new set of network routing strategy protocols to be...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Network Architecture for Heterogeneous Mobile Ad Hoc Network
January 1, 2011, 12:00am PST
Mobile Ad Hoc Network (MANET) is infrastructureless networks which are often considered as the extension of Internet access range that provide multi hop wireless access. MANET is a wireless...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Design of Accurate End-to-End IPv4 and IPv6 Performance Test
December 19, 2009, 12:00am PST
The Internet is growing every day and Internet Protocol version 4 (IPv4) is going to deplete soon. It is important to know the current status of network performance before migrating or expanding...
Provided by Universiti Kebangsaan Malaysia
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White Papers
A Review of Security Parameters in Mobile Ad-Hoc Networks
February 16, 2009, 12:00am PST
In this paper the authors study and review the most up-to-date schemes of integrating security mechanisms and parameters over the last few years. To-date, different researchers have suggested...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Global And Regional Sources Of Risk In Major ASEAN Stock Markets
June 1, 2008, 12:00am PDT
While many studies have focused on the influence of global returns on Asian emerging markets, this study establish evidence on the influence of regional returns as well. The motivation attributed...
Provided by Universiti Kebangsaan Malaysia
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Whitepapers
Exploiting Spatial and Frequency Diversity in a Spatially Correlated MU-MIMO Downlink Channels Transmission
November 9, 2012, 12:00am PST
The effect of self-interference, due to increase of spatial correlation in a MIMO channel has become one of the limiting factors towards the implementation of future network downlink...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Detecting Sleep Deprivation Attack Over MANET Using a Danger Theory-Based Algorithm
September 26, 2011, 12:00am PDT
MANET is a collection of mobile, decentralized, and self organized nodes. Securing MANET is a problem which adds more challenges on the research. This is because MANET properties make it harder to...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Validation of Three-Dimensional Ray-Tracing Algorithm for Indoor Wireless Propagations
February 19, 2011, 12:00am PST
A 3D ray tracing simulator has been developed for indoor wireless networks. The simulator uses Geometrical Optics (GOs) to propagate the electromagnetic waves inside the buildings. The prediction...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Investigation of In-Band Transmission of Both Spectral Amplitude Coding/optical Code Division Multiple-Access and Wavelength Division Multiplexing Signals
June 1, 2011, 12:00am PDT
The transmission of both Optical Code Division Multiple-Access (OCDMA) and Wavelength Division Multiplexing (WDM) users on the same band is investigated. Code pulses of Spectral Amplitude Coding...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Performance Enhancement of Successive Interference Cancellation Scheme Based on Spectral Amplitude Coding for Optical Code-Division Multiple-Access Systems Using Hadamard Codes
April 1, 2009, 12:00am PDT
A successive interference cancellation scheme is applied to Optical Code-Division Multiple-Access (OCDMA) systems with spectral amplitude coding SAC. A detailed analysis of this system, with...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Analytical Comparison of Optical Code-Division Multiple-Access Systems With and Without a Successive Interference Cancellation Scheme Using Modified Prime-Sequence Codes
September 1, 2008, 12:00am PDT
The authors analyzed direct-sequence code-division multiple-access system using a Successive Interference Cancellation (SIC) scheme. Modified prime-sequence codes are utilized as signature...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Proposal of Successive Interference Cancellation Scheme in Optical Code-Division Multiple Access Systems
March 1, 2008, 12:00am PST
Proposes one of the multi-user detection schemes, a new technique that has the potential to reduce interference or suppress multiple-access interference and, therefore, increase the capacity of...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Interference Mitigation Using Successive Interference Cancellation in Optical CDMA Systems
May 25, 2009, 12:00am PDT
Performance of Optical Code Division Multiple Access (O-CDMA) system is influenced by Multiple Access Interference (MAI) resulted from the overlapping between the users. To overcome this problem,...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Performance Analysis of Successive Interference Cancellation Scheme for Optical CDMA Systems Using Modified Prime Sequence Codes
November 13, 2007, 12:00am PST
In this paper, the authors propose a new technique in direct sequence code division multiple access system using on-off key and modified prime sequence code, the scheme of this technique dubbed...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Cost Installation Analysis of FTTH Test Bed Network Set Up-Previous, Present and Future
November 28, 2011, 12:00am PST
There are several methods for testing and troubleshooting a Fiber-To-The-Home Passive Optical Network (FTTH-PON). The simplest and low cost method would be using a power meter which is able to...
Provided by Universiti Kebangsaan Malaysia
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Whitepapers
Implementation of Location Determination in a Wireless Local Area Network (WLAN) Environment
February 20, 2008, 12:00am PST
Wireless Local Area Network (WLAN) is developed to complement the wired network. Various standards for WLAN exist, but the most common standards are IEEE 802.11b and 802.11g. Since, WLAN provides...
Provided by Universiti Kebangsaan Malaysia
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Whitepapers
Optical Network Restoration and Migration Using OXADM
February 20, 2008, 12:00am PST
Optical Cross Add and Drop Multiplexer (OXADM) is a recently invented optical networks device. Designed with a purpose to combine the operational concepts of Optical Cross Connect (OXC) and...
Provided by Universiti Kebangsaan Malaysia
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Whitepapers
Interference-Aware Subcarrier Allocation in a Correlated MIMO Downlink Transmission
April 1, 2012, 12:00am PDT
The demand for high data rate in wireless communication has increased dramatically over the last two decades. Multiple-Input Multiple-Output (MIMO) transmission is one of the efficient ways to...
Provided by Universiti Kebangsaan Malaysia
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Whitepapers
An Enhanced Workflow Reengineering Methodology for SMEs
August 17, 2012, 12:00am PDT
Business Process Reengineering (BPR) is not just the program of business process improvement, but it improves the operations of the business process as a whole. Workflow Reengineering Methodology...
Provided by Universiti Kebangsaan Malaysia
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White Papers
A Catalogue of Object-Oriented Design Heuristics
June 19, 2007, 12:00am PDT
Object-oriented design is a process of identifying relevant objects, factoring them into classes, organizing hierarchically, and establishing dynamic collaborations among the objects. It is a...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Mobile WiMAX Performance Improvement Using a Novel Algorithm With a New Form of Adaptive Modulation
February 1, 2009, 12:00am PST
Worldwide Interoperability for Microwave Access (WiMAX) is an emerging broadband wireless technology that promises high-speed data services. Mobile WiMAX is a broadband wireless solution that...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Binding Semantic to a Sketch Based Query Specification Tool
April 1, 2009, 12:00am PDT
In image retrieval systems, user information needs is expressed using multiple types of query. Unfortunately, due to user subjectivity perception to visual features and semantic depths of images,...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Architecture of Network Management Tools for Heterogeneous System
January 9, 2010, 12:00am PST
Managing heterogeneous network systems is a difficult task because each of these networks has its own curious management system. These networks usually are constructed on independent management...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Characteristics and Functionality of Emulation Network Analyzer and Hardware Network Analyzer
March 2, 2009, 12:00am PST
This paper presents a development of an Emulation Network Analyzer for heterogeneous services in campus environment. The authors propose a framework and implementation named ENA that models the...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Search Engine Module in Voice Recognition Browser to Facilitate the Visually Impaired in Virtual Learning (MGSYS VISI-VL)
December 5, 2010, 12:00am PST
Nowadays, web-based technologies influence in people's daily life such as in education, business and others. Therefore, many web developers are too eager to develop their web applications with...
Provided by Universiti Kebangsaan Malaysia
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White Papers
A New Proposed Location Registration Procedure in Next Generation Cellular Networks
July 2, 2010, 12:00am PDT
The objective of this research is to propose a new location registration procedure for System Architecture Evolution (SAE) which is the core network architecture of 3GPP's future Long Term...
Provided by Universiti Kebangsaan Malaysia
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White Papers
A Multibiometric Speaker Authentication System With SVM Audio Reliability Indicator
November 19, 2009, 12:00am PST
Performances of biometric speaker authentication systems are good in clean conditions but their reliability drops severely in noisy environments. Implementation of multibiometric systems using...
Provided by Universiti Kebangsaan Malaysia
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White Papers
The Importance Of Incorporating New Technology And Innovation In Supply Chain Management (SCM) Processes In Enhancing Performance
June 18, 2008, 12:00am PDT
This paper examines the importance of incorporating new technology and innovation in supply chain management (SCM) processes in manufacturing industry in Malaysia. The study measures senior...
Provided by Universiti Kebangsaan Malaysia
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White Papers
AND-Subtraction Detection Modified SNR Equation for Optical CDMA Systems in PON Applications
April 26, 2010, 12:00am PDT
In this paper, AND-subtraction detection scheme compatible with OCDMA system and EDW code was simulated. The aim of the simulation is to adjust the AND-subtraction detection SNR equation for...
Provided by Universiti Kebangsaan Malaysia
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White Papers
The Resolution Bandwidth Analysis of Data Acquisition in Optical Spectrum Analyzer and WDM Analyzer
December 1, 2008, 12:00am PST
This paper presents the analysis of Resolution Bandwidth (RB) of data acquisition in the Optical Spectrum Analyzer (OSA) and WDM Analyzer. Resolution bandwidth is the bandwidth of the IF filter,...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Problems of Learning Programming Language
August 26, 2008, 12:00am PDT
Students sometimes find it hard to learn new programming languages. They often confront unfamiliar programming terms and are required to visualize the processes that happen in the computer memory....
Provided by Universiti Kebangsaan Malaysia
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White Papers
Effects of Word Processing on Arab Postgraduate Students' Essays in EFL
December 5, 2008, 12:00am PST
This study investigates the effects of word processor in composing essays in English as a Foreign Language (EFL) among Arab postgraduate students at Universiti Kebangsaan Malaysia (UKM) in terms...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Protection Switching Against Failure in Distribution Region
March 1, 2009, 12:00am PST
Protection and restoration mechanisms have been applied in backbone networks, but access networks are not considered significantly in the scope of survivability. In this paper, the paper proposes...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Visual Basic Software Tool for FTTH Network Management System: SANTAD
February 1, 2009, 12:00am PST
This paper proposed a Fiber-To-The-Home (FTTH) network management system named Smart Access Network Testing, Analyzing and Database (SANTAD) for self protected and restored against fiber fault...
Provided by Universiti Kebangsaan Malaysia
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White Papers
The Proposal of OCDMA Encoder Based on Optical Cross Add and Drop Multiplexer (OXADM) - Device Characteristic
January 2, 2009, 12:00am PST
This paper proposes the development of N-ports Optical Code Division Multiple Access (OCDMA) encoder prototype based on OXADM device. It is potentially to provide a high security for data...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Random Diagonal Code for Spectral Amplitude-Coding Optical CDMA System
December 3, 2007, 12:00am PST
A new code structure for spectral amplitude coding optical Code Division Multiple Access (CDMA) system is constructed using " RD" code (Random Diagonal) the new code which can be constructed using...
Provided by Universiti Kebangsaan Malaysia
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White Papers
A New Technique Using Signal Correlation of One Node B to Estimate Mobile Location
May 1, 2008, 12:00am PDT
In Universal Intelligent Positioning System (UIPS) project, Location Determining Techniques were developed to estimate mobile user's location (position) in 2G, 3G and beyond networks. Timing...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Spectral Efficiency Evaluation of Downlink Mobile Multi-Hop Relay Systems Employing Macro Diversity Handover Technique
June 2, 2008, 12:00am PDT
IEEE 802.16j is an amendment to the IEEE 802.16 broadband wireless access standard to enable the operation of multi-hop relay stations (RS). It aims to enhance the coverage, per user throughput...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Remote Monitor and Control Based Access Control System Using PIC Microcontroller
December 3, 2008, 12:00am PST
This paper describes the development of Access Control System (ACS) remote monitor and control for Fiber To The Home (FTTH) Passive Optical Network (PON), and uses PIC microcontroller integrated...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Smart Drop Protection Scheme (SDPS) in EPON Network
April 3, 2009, 12:00am PDT
This paper proposed for Smart Drop Protection Scheme (SDPS) will be implemented in the drop region section to provide the survivable protection scheme. The SDPS will contribute for tree topology...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Throughput Enhancement and Performance Improvement of the OFDM Based WLAN System
April 1, 2009, 12:00am PDT
This paper presents two models of WLAN-OFDM, which offer a new decision policy in the Adaptive Modulation (AM) technique of choosing the order of modulation schemes to map the data onto the...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Determination of GPS Total Electron Content Using Single Layer Model (SLM) Ionospheric Mapping Function
October 2, 2008, 12:00am PDT
The ionosphere layer is very important to the communication system. The ions produced from the striking process of the ultra violet light have an active role in reflecting and observing the earth...
Provided by Universiti Kebangsaan Malaysia
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White Papers
Mobile WiMAX Performance Improvement Using a Novel Algorithm With a New Form of Adaptive Modulation
February 1, 2009, 12:00am PST
Worldwide Interoperability for Microwave Access (WiMAX) is an emerging broadband wireless technology that promises high-speed data services. Mobile WiMAX is a broadband wireless solution that...
Provided by Universiti Kebangsaan Malaysia
-
White Papers
A Catalogue of Object-Oriented Design Heuristics
June 19, 2007, 12:00am PDT
Object-oriented design is a process of identifying relevant objects, factoring them into classes, organizing hierarchically, and establishing dynamic collaborations among the objects. It is a...
Provided by Universiti Kebangsaan Malaysia
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