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Browsing EN: Research Reports by Subject "Computer and Multimedia Engineering"
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- PublicationA GPS Vehicle Tracking System Displayed on a Google-Map-Based Web(University of the Thai Chamber of Commerce, 2010)
; University of the Thai Chamber of Commerce. School of EngineeringNowadays, vehicles are essential to transport products or goods in many organizations or firms, but there are many problems of using the vehicles for their business such as the delay of the deliveries, driving out of paths, or even stealing oil and products. This project proposes the vehicle tracking system using a GPS technology module to receive the location of the vehicle and to forward into microcontroller and to connect internet by the GPRS technology for displaying a real time on the website map developed by Google Map which allows inspection of vehicles at all times. There are 3 parts of this project. The first part is a program developed in C language for controlling the hardware. Employing PHP and AJAX language will be developed for the Google Map API to help a map construction on the website. The second part is the hardware, there are the GPS and GPRS modules, the GPS module will locate the vehicles via the satellite, and the GPRS module will assemble all data and send it to the website by the microcontroller. The final part is the interface using RS232 for connecting between the GPS and GPRS modules. With the Google Map on a real time website, vehicles can be monitored and located very effectively. This includes paths and/or vehicles directions. However, the small error is at approximately 15 meters in the wrong location.16 173 - PublicationClustering Approach for Radio Resource Management in High Density Wireless Local Area Networks(University of the Thai Chamber of Commerce, 2013)
; University of the Thai Chamber of Commerce. School of EngineeringFrom our fundamental study, we find that high density wireless LANs can introduce a high hidden node index, resulting in rapid reduction of the overall system performance. In this paper, we propose the clustering approach for radio resource management to alleviate the degradation of the overall system performance. The main objective of such algorithm is to reduce the hidden node index, therefore enhancing the performance of the system. We conduct two studies: experimental study by using wireless network test-bed and simulation study by using OPNET Modeler. The former is to measure the saturated throughput of the base system while the latter is to simulate the wireless network in high density scenarios.The results show that the proposed algorithm outperforms the traditional approach at the high degree of network density (greater than 9.3). Therefore, the proposed algorithm is a better alternative in such settings.11 123