R. Badlishah Ahmad, Prof. Ir. Ts. Dr.: Recent submissions
Now showing items 61-80 of 147
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Image enhancement using white balance technique in Ziehl-Neelsen sputum slide images
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Ziehl-Neelsen stain method is one of the common techniques that are being used to diagnose the tuberculosis (TB) infection. However, due to the manual process of preparing the samples, the image of the slide may not appear ... -
Modified median filter for noise reduction in Ziehl-Neelsen sputum slide images
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Image filtering is an important approach in the area of digital image processing for noise reduction. The time cost and output image quality in the filtering system are two convention measures in selecting the appropriate ... -
The use of openCV in Traffic Surveillance System (TSS)
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Due to the increase of traffic accidents over the last few years; the development of surveillance systems has increasing attention. The use of the video cameras is one solution to solve the traffic problems, Smart cameras ... -
A chaotic neural network based encryption algorithm for MPEG-2 encoded video signal
(Universiti Malaysia Perlis (UniMAP)Pusat Pengajian Kejuruteraan Mekatronik, 2012-02-27)In this paper, a cipher system based on Chaotic Neural Network (CNN) is used to encrypt and construct a stream cipher of compressed MPEG-2 video signal. The symmetric CNN cipher algorithm transforms the plaintext (compressed ... -
TCP Vegas’ adaptive CWND in wireless IPv4 and IPv6 networks
(Universiti Malaysia Perlis (UniMAP)School of Mechatronic Engineering, 2012-02-27)In a network, TCP sends burst of data during its initial state due to the aggressive increase of congestion window (CWND) size. The aggressive increase in congestion window size causes traffic overload. In our work, we ... -
Development of EEG data acquisition device by using TS7800 Single Board Computer (SBC)
(Universiti Malaysia Perlis (UniMAP)School of Mechatronic Engineering, 2012-02-27)Electroencephalogram (EEG) plays a vital role in several medical diagnosis (brain tumor detection, Alzheimer disease, epilepsy, etc), engineering applications (emotion detection, drowsiness detection, stress assessment, ... -
Ant colony system with stagnation avoidance for the scheduling of real-time tasks
(Institute of Electrical and Electronics Engineers (IEEE), 2009-03-30)This paper presents a meta-heuristic approach, namely, the Ant Colony System for non-preemptive scheduling of real-time tasks under timing and precedence constraints on a single processor architecture. The present paper ... -
Development and performance evaluation of hierarchical quadrature amplitude modulation (HQAM) for image transmission over wireless channels
(Institute of Electrical and Electronics Engineers (IEEE), 2011-09-20)Asymmetric modulation techniques like Quadrature Amplitude Modulation system is one of the key techniques in building a broadband mobile communication network because of increasing shortage of wireless communication channels. ... -
New code structures based on coherent and incoherent sources for spectral amplitude coding-OCDMA systems
(Institute of Electrical and Electronics Engineers (IEEE), 2009-04-03)A new code of optical code division multiple access (OCDMA) based on Spectral Amplitude Coding (SAC) is described and analyzed. The coding technique is called Random Diagonal "RD" code. One of the important properties of ... -
Effective design of optical code-division multiple access network using random diagonal codes
(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 ... -
Hybrid OCDMA/WDM system using complementary detection technique for FTTH access networks
(Institute of Electrical and Electronics Engineers (IEEE), 2011-09-25)A hybrid optical code division multiple access (OCDMA) over wavelength division multiplexing (WDM) system is proposed for supporting large numbers of subscriber for fiber-to-the-home (FTTH) network. The system combines two ... -
Hybrid OCDMA over WDM system using modified double weight (MDW) code for optical access network
(Trans Tech Publications, 2012)In this paper a hybrid optical code division multiple access (OCDMA) over wavelength division multiplexing (WDM) network is proposed to support large number of subscribers. The system combines two different techniques, ... -
Performance improvement of spectral amplitude coding-optical code division multiple access systems using NAND detection with enhanced double weight code
(The Optical Society of Japan, 2012-01)The bit-error rate (BER) performance of the spectral amplitude coding-optical code division multiple access (SACOCDMA) system has been investigated by using NAND subtraction detection technique with enhanced double weight ... -
Enhancement of performance of a hybrid SAC–OCDMA system using dynamic cyclic shift code
(Institute of Physical Optics, 2012)A hybrid subcarrier multiplexing (SCM) technique incorporating spectral amplitude coding and optical code division multiple access (SAC-OCDMA) technologies is investigated using both numerical and simulation methods. The ... -
Prolonging lifetime of wireless sensor networks with mobile base station using particle swarm optimization
(Institute of Electrical and Electronics Engineers (IEEE), 2011-04-19)Wireless sensor networks are a family of networks in wireless communication system and have the potential to become significant subsystem of engineering applications. In view of the fact that the sensor nodes in wireless ... -
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 ... -
Performance evaluation of TCP Vegas versus different TCP variants in homogeneous and heterogeneous wired networks
(World Academy of Science, Engineering and Technology (WASET), 2011-02)A study on the performance of TCP Vegas versus different TCP variants in homogeneous and heterogeneous wired networks are performed via simulation experiment using network simulator (ns-2). This performance evaluation ... -
New code for spectral-amplitude coding optical code-division multiple-access systems
(Institute of Electrical and Electronics Engineers (IEEE), 2011-06-16)In this paper we present a novel code family for SAC-OCDMA system. The new code technique is called Dynamic Cyclic Shift (DCS) code. Which more flexible in selection the code length with variable cross correlation. ... -
Electronic olfactory prototype of an automated malaise detection system for the agricultural industry
(Prince of Songkla University, 2007-05-10)The development of artificial olfactory systems, or electronic nose, for various applications has been on the rise due to their apparent benefits. The development and integration of electronic nose with other systems, ... -
Vehicle speed detection using frame differencing for smart surveillance system
(Institute of Electrical and Electronics of Engineering (IEEE), 2010-05-10)This paper presents vehicle speed detection algorithm and its application for smart surveillance system using PC workstation at the selected road lane. Typical temporal resolution of 30 ms to 40ms of conventional camera ...