R. Badlishah Ahmad, Prof. Ir. Ts. Dr.: Recent submissions
Now showing items 41-60 of 147
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Channels estimation in OFDM system on block-type and comb-type pilot arrangement
(Universiti Malaysia Perlis (UniMAP), 2012-06-18)In orthogonal frequency division multiplexing (OFDM) systems over time-varying and frequency-selective fading channel, channel estimation and tracking is generally carried out by transmitting known pilot symbols in given ... -
Ab-initio calculation of the ground state of a truncated single-walled carbon nanotube
(American-Eurasian Network for Scientific Information (AENSI), 2012-05)An ab-initio calculation of the ground state of a truncated single-walled carbon nanotube was performed. For this calculation, we adopted Density Functional Theory approach which significantly reduced computational ... -
Synthesis of finite length multi level sequences for clutter rejection in radar
(Institute of Electrical and Electronics Engineers (IEEE), 2012-07-24)In radar systems the very low side-lobes that can be achieved with amplitude and phase modulated pulse trains make their use particularly attractive in systems requiring a large dynamic range. Moreover, the excellent ... -
Characteristic region based image steganography using Speeded-Up Robust Features technique
(Institute of Electrical and Electronics Engineers (IEEE), 2012)Steganography is the art and science of invisible communication. It is employed in different useful a pplications, like, safe circulation of secret data and Medical I maging Systems. For most of the current steganography ... -
Memory efficient set partitioning in hierarchical tree (MESH) for wavelet image compression
(The Institute of Electronics, Information and Communication Engineers., 2012-09)This paper presents a memory efficient version of set partitioning in hierarchical tree (SPIHT). The proposed coder called Memory Efficient SPIHT (MESH) uses a single re-usable list instead of three continuously growing ... -
Waveform design for improved range and Doppler resolution in radar
(Institute of Electrical and Electronics Engineers (IEEE), 2012-02)The choice of a suitable transmit waveform is an important problem in radar design. This is so because the waveform controls resolution and clutter performance and also bears heavily on the system cost. Theoretical studies ... -
Gait disorder rehabilitation using vision and non-vision based sensors: A systematic review
(Association of Basic Medical Sciences of Federation of Bosnia and Herzegovina, 2012-08)Even though the amount of rehabilitation guidelines has never been greater, uncertainty continues to arise regarding the efficiency and effectiveness of the rehabilitation of gait disorders. This question has been hindered ... -
Electromyographic responses during elbow movement at two angles with voluntary contraction: Influences of muscle activity on upper arm Biceps Brachii
(Maxwell Scientific Organization, 2012-11-15)Analysis of Electromyography (EMG) signals generated by individuals is part of human musculoskeletal system research and signals are always influenced by the electrode placement in the muscle. This characteristic is also ... -
Modeling and simulation of WSNs for agriculture applications using dynamic transmit power control algorithm
(Institute of Electrical and Electronics Engineers (IEEE), 2012-02)Simulation platforms have become important tools in the design and evaluating of protocols for Wireless Sensor Networks. Thus the use of realistic models in simulation is important for the development of protocols. However, ... -
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 ... -
Design and simulation a new code with zero cross-correlation for SAC-OCDMA networks
(INSInet Publications, 2012-03)Design and simulation of new code family for the Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) networks is present. The new code family called Multi Diagonal (MD) code. The MD code family ... -
Development of Discrete Wavelet Transform (DWT) toolbox for signal processing applications
(Institute of Electrical and Electronics Engineers (IEEE), 2012-02-27)Discrete Wavelet Transform (DWT) plays a significant role in several image and signal processing applications. Most of the researchers are using different wavelet toolboxes for their application and research investigation. ... -
Performance analysis on MDW code in FTTH access network using PIN & APD photodiode
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)In order to comprise between PIN photo detector and avalanche photodiodes in a system used modified double weight (MDW) code to be a performance of the optical spectrum CDMA in FTTH network with point-to-multi-point ... -
A framework for Emmbedded parallel computers
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)High Performance Computing has provided the most interesting platform in the quest to solve high computational problems. Several factors have been identified that can be the focal points for enhancing current computing ... -
TCP SYN flood attack analysis based on payload
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Transmission Control Protocol (TCP) Synchronized (SYN) Flood has become a problem to the network management to defend the network server from being attacked by malicious attackers. The malicious attackers can easily exploit ... -
LAN packet acquisition system using ARM based SBC
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Due to computer hardware technologies software developers are more focusing to develop embedded software. LAN packet acquisition system can embed on ARM based embedded Linux based single board computer (SBC). This paper ... -
Proposal: Fundamental study of spectral slicing wavelength division multiplexing (WDM) system
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)Since the inception of optical fiber communication in 1974, their transmission capacity has experienced a tremendous increase in the years after. Several technology advances spurred its growth. But its use was kept to long ... -
Design and implementation of fail -recover operation for embedded system based FPGA
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)High speed digital systems are often applied in critical tasks or in environments where a failure can result in unacceptable malfunctions or in dangerous situations for people. This proposal presented Fail-Recover Operation ... -
Propagation model for wireless sensor networks: Review and modeling
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)In simulation environments, prediction of path losses, maximum communication coverage for each node and received signal strength are calculated by using propagation model. However, most of the simulation tools only offer ... -
A study of TCP congestion control mechanisms
(Universiti Malaysia Perlis (UniMAP)Centre for Graduate Studies, 2010-10-16)In this paper, the TCP congestion control mechanisms are discussed. There are four intertwined mechanisms defined in the Internet standards track protocol, which are slow start, congestion avoidance, fast retransmit and ...