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Now showing items 11-18 of 18
Propagation model for wireless sensor networks: Review and modeling
(Universiti Malaysia Perlis (UniMAP), 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 ...
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. ...
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 ...
Comparison of colour thresholding method using RGB and HSI information for Ziehl-Neelsen sputum slide images
(Institute of Electrical and Electronics Engineers (IEEE), 2010-05-10)
Image segmentation technique for Ziehl-Neelsen sputum slide image is an important factor in extracting tuberculosis (TB) bacilli from the background and sputum cells. Colour threshold using Red, Green, Blue (RGB) information ...
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. ...
Outdoor propagation analysis for LR-WPAN IEEE 802.15.4
(Institute of Electrical and Electronics Engineers (IEEE), 2010-09-22)
This paper presents a preliminary study to obtain the
propagation characteristics for IEEE 802.15.4 Low Rate-Wireless
Personal Area Network (LR-WPAN). Two units of Wireless Sensor
Networks Nodes (WSNs) were used in this ...
Performance analysis on MDW code in FTTH access network using PIN & APD photodiode
(Universiti Malaysia Perlis (UniMAP), 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 ...
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 ...