Project Title LoRa Driven Medical Adherence System
Student Name Suheib Faisal Abubaker Sherif
Supervisor Dr. Tan Wooi Haw
Year of Completion 2018
Description In this project, a LoRa driven medical adherence system has been designed and developed in order to improve medicine adherence for elderlies. The developed system consists of two main components:an embedded device for the use of patients at home and a web application to manage the patients and their medication schedule as well asto keep track of their medicine intake history. LoRa wireless communication technology is used to connect all the embedded devices with a central gateway that manages the network.

Results / Conclusion Multiple tests were carried out in order to evaluate the system functionalities and to ensure that the system requirements were met according to the design plan. Hardware tests were performed to examine the range of transmission and power consumption. Latency tests were also done to verify accurate medicine reminders.The results showed positive outcomes, which implied that the practical implementation was feasible with this design. Software tests were also carried out to confirm that there were no issue in the system and all software components were working as intended.

 

Project Title LoRa Driven Home Security System for Residential Community
Student Name Abubaker Faisal Abubaker Sherif
Supervisor Dr. Tan Wooi Haw
Year of Completion 2018
Description In this project,aLoRa driven home security system for residential communities has been designed and developed. Both hardware and software solutions were used to provide emergency alerts. A panic button was used to generate alarms manually and embedded sensors were implemented to trigger alarms automatically. LoRa wireless communication technology was used to connect all hardware devices in the network and to forward all these data to be stored in the server. A mobile application was developed to provide an alternative way of generating manual emergency alerts and to provide a communication channel in the form of a chat room amongneighboursfrom the same residential area as well as communicating with security guards. A web application was developed to manage the security systems for multiple residential areas where the administrator can register new residential areas and assign security guards to these residential areas accordingly. Security guards can then monitor the security status of each house in the residential area and interact with residents through the same web application.

Results / Conclusion Both hardware and software components were tested to verify that the system was functioning appropriately and reliably. Moreover, experiments were performed to inspect the LoRa Network especially in terms of range and data rate capabilities. Hardware tests have been conducted to examine the latency, power consumption and scalability of the system. For the software, a full functionality test was performed to verify that each task of the solution was carried out successfully and the overall system was functioning as designed.

 

Project Title Path Loss Analysis of 5G Mobile Network
Student Name Yeo Kai Ming
Supervisor Ir. Dr. Pang Wai Leong
Year of Completion 2017
Description The conventional 2G, 3G and 4G frequencies have begun facing the global bandwidth shortageissue and it is expected to rise by the year 2020. To overcome this, the fifth generation mobilenetwork also known as 5G is being proposed. However, its path loss performance has yet to betested for its deployment into the current network system. This paper therefore examines the path loss properties of the 5G mobile network. The 5G mobile network encompasses the millimetre wave frequency spectrum which ranges from 3-300 GHz. In this paper, simulationsare conducted at two verified frequencies which are 28 GHz and 73 GHz to identify the pathloss performance with the transmitter and receiver separation distance. The simulations areconducted in two different environments as well. Extensive simulations show that the path lossfor 73 GHz frequency is higher than 28 GHz. Furthermore; the Non-Line-Of-Sight (NLOS)environment shows higher path loss reading than the Line-Of-Sight (LOS) environment.

Results / Conclusion This project studies the path loss against the T-R separation distance for the millimetre wave frequency range of 28 GHz and 73 GHz. This work is carried out using the NYUSIM simulator for a T-R separation distance of 10 m – 500 m for both frequencies. In addition, the performance of the LOS and NLOS environments for both frequencies are compared as well. The path loss increases as the distance between the transmitter and receiver increases. Apart from that, the NLOS environment have a higher path loss value than the LOS environment. It can also be found that the path loss for 73 GHz is greater than 28 GHz because of its larger frequency and shorter wavelength.

 

Project Title Spectrum Aware Routing in Cognitive Mesh Network
Student Name Chong Wai Kean
Supervisor Dr. Mohamad Yusoff Bin Alias
Year of Completion 2013
Description In the rapid advancement of the wireless technology nowadays, the demand of the spectrum utilization is increasing dramatically to meet the requirement for high-speed wireless services. The current static spectrum allocation policy incurs the spectrum congestion bottlenecks and underutilization of spectrum band. In order to solve the problems of spectrum usage inefficiency and scarcity, a new technology namely cognitive radio (CR) is proposed. CR technology enables the secondary user (SU) to temporarily utilize the unoccupied license channel without interference with primary user (PU). SU has the ability to vacant the channel and switch to another unused channel if PU suddenly become active and occupies the respective channel. One of the main difficulties in a cognitive radio network (CRN) is that the SU should have the awareness towards the presence of PU to reduce the interference in licensed communication. This project presents a novel proposed routing scheme which makes the SU aware of and consider the activity of PU to perform proper dynamically channel switching to optimize the performance in SU without influence the performance in PU. Another challenge in a CRN is that PU might be the primary exposed node (PEN) and/or primary hidden node (PHN) to the secondary users. The proposed routing scheme generates a channel list namely gamma channel list which can solve the PEN and PHN problem. Moreover, the proposed routing scheme generates delta channel list whereby the channel presented in the list will be used by the SU for communication to optimize its performance in different types of scenario without interference with PU and also able to avoid PHN and PEN problems.

Results / Conclusion The proposed routing scheme is able to lower the probability of packet lost in SU in order to reduce its average end-to-end delay which can be shown in the four models for the first scenario. The second model shows the minimum improvement on the delay in SU which is about 0.35ms, whereas the fourth model shows the maximum improvement on the performance of SU in term of end-to-end delay which is as high as 2.78ms. Moreover, the proposed routing scheme also maintains the throughput of SU. Finally, the simulation results of the proposed routing scheme show thesatisfactory performance as compared to the traditional AODV routing protocol.

 

Project Title Investigating B.A.T.M.A.N.
Student Name Choo Yu Ying
Supervisor Dr. Tan Su Wei
Year of Completion 2011
Description B.A.T.M.A.N. (Better Approach to Mobile Ad hoc Networking) is a new routing protocol devised for multi-hop wireless mesh/ad hoc networks. B.A.T.M.A.N. routing protocol stems from the deficiency of the Optimized Link State Routing (OLSR) protocol - poor performance under practical environments, high computational overhead, etc. The performance of B.A.T.M.A.N. has been observed using real-world implementation. While this is the most practical approach, it is difficult to study and evaluate various aspects of the protocol due to the dynamic and changeable environment. Besides, it is difficult to perform a head-to-head comparison with other routing protocols. This project aims to design and implement a B.A.T.M.A.N. module for a chosen network simulator. The module will be used to study various aspects of B.A.T.M.A.N. under a wide range of operating environments. Besides, comparison study with other routing protocols (e.g. OSLR) is expected.

Results / Conclusion A B.A.T.M.A.N. module for QualNet network simulator has been developed. Comprehensive simulation study on various aspects of B.A.T.M.A.N has been carried out and results are presented and discussed. B.A.T.M.A.N is compared with two well known routing protocol for mobile ad hoc networks: Ad Hoc On Demand Routing Protocol (AODV) and Optimized Link State Routing Protocol (OLSR). The results show the advantages and disadvantages of B.A.T.M.A.N as compared to these two protocols.

 

Project Title Study and Implementation of MIMO Systems
Student Name Muhammad Arriyadi
Supervisor Mohd Hairi bin Halmi
Year of Completion 2011
Description Multiple-Input Multiple-Output (MIMO) wireless system is a multi-antenna system. The system employs more than one antenna at the transmitter and receiver. MIMO is seen as the enabling technology for the 4th Generation wireless system. In this project, basic MIMO systems based on Alamouti, Tarokh and Jafarkhani schemes are studied and simulated. Next, the performance of the basic MIMO systems is further improved by incorporating the basic systems with a more advanced scheme, i.e. Code Selection/Hybrid Transmitter scheme. Finally, a novel MIMO scheme named Weighted Virtual Alamouti Space-Time Block Codes (STBC) is proposed. In addition to the multiple transmit and receive antennas, the proposed scheme utilizes weighted virtual antennas in between the transmit and receive antennas to further improve bit-error-rate (BER) performance.
Results / Conclusion Based on the simulation results, for the same total number of antennas, the proposed scheme is proven to be able to perform better than the conventional Alamouti MIMO systems at low signal-to-noise ratio (SNR) levels.

 

Project Title Design and Development of Wireless Sensor Network
Student Name Sun Tze Yun
Supervisor Mr Lim Ka Sing
Year of Completion 2008
Description Wireless sensor network (WSN) plays an important role in the future of technologies. As WSN are small and could access places which are hard for human to access and continuously monitored an environment and process the data accordingly. Based on this project, wireless sensor module which will be used is Tmote Sky. Tmote Sky is a readily available wireless sensor module. This project would be focusing on implementing different applications and testing on the Tmote Sky. Tests are conducted based on theoretical results and compared. Applications are developed according to the TinyOS platform. In the project, Tmote Sky is used as habitat monitoring mechanism. Four sensors are integrated which are temperature, humidity, methane and light irradiance sensor. Other applications which are added to the Tmote Sky are camera, and buzzer. This hardware is integrated through Tmote Sky’s ADC port. From the testing, it was found that the maximum distance which the Tmote Sky could communicate with base station is approximately 50 meters compared to the given distance of 125 meters. Tmote Sky could also operate well underwater for approximately 20 centimeters depth. Methane gas concentration, temperature, humidity, and light irradiance from different locations were collected and analyzed as well.

Results / Conclusion This project involves designing, developing and deployment of Tmote Sky with the sensors attached for different types of environmental monitoring. The characteristics of the Tmote Sky and the sensors were studied. The performance of several wireless network structures, namely STAR, RING and MULTIHOP have been studied to obtain a suitable wireless network structure that is suitable for environmental studies. As a result, The MULTIHOP concept of the Tmote Sky allows us to improve the size of the coverage area. The Methane gas sensor was designed and developed and was put into test at different area. The comparison of Methane gas occurs in different test sites are depicted in following figure. In summary, there is a high density of Methane gas is observed in the hostel toilet test site.

 

Project Title Effective Queuing System for a Mobile Application
Student Name Yau Wei Keong
Supervisor Mr Khairil Anuar
Year of Completion 2008
Description An effective queuing system for a mobile application developed for this project involves booking of queue numbers via Short Message Service (SMS), thus SMS Queuing System is introduced. SMS Queuing System allows users to conveniently request for queue numbers remotely via mobile devices which has SMS capability. It is also designed to increase the efficiency of the current queuing system and to reduce the waiting time of users. The hardware and software required for this project is carefully selected at minimum cost. A mobile phone with Global System for Mobile (GSM) modem capability and open source software are used throughout the development of this project. The algorithm of SMS Queuing System is written solely in MySQL database environment to minimize the processing time. With the use of SQL statements and queries, the programme is able to generate a SMS reply based on the received SMS message from the user. The SMS messages sent by users must contain valid keywords so that the application can generate replies based on the users’ request. Additional feature such as appointment bookings via SMS is added to enhance the system’s functionality and at the same time, allowing users to have higher degree of convenience. Time delay test for the system using different SIM cards from different wireless service providers are done to measure to the end-to-end time delay. The time take by the application to generate the SMS reply is also measured to evaluate the system efficiency.

Results / Conclusion Upon the completion of this project, the SMS Queuing System is fully operational and functions without any major problem with the suggested hardware and software. The basic functions as well as the additional feature which allows bookings for appointment via SMS are able to integrate well with the application. Thus, the completed SMS Queuing System allows users to have more flexibility and extra convenience in bookings queues and appointments using only their mobile devices. Companies which integrate this system with their current Electronic Queuing/Ticketing System, will see better customers flow at the queuing counters. This system also allows companies to serve more customers due to the increase efficiency.