Yung-Wey Chong

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The demand for anytime-anywhere connectivity has accelerated the emergence of new technologies and integrated networks for better quality of service (QoS). With the introduction of IEEE802.16, mobility in broadband services has become reality. Whilst broadband services in urban area are common, it is deemed luxury service in rural and remote area. Since(More)
The Shannon capacity predicts the theoretical maximum rate of information transfer through a channel, at a given noise level. However, this concept has limited application in LTE networks. As such, alpha-Shannon capacity, which is modified from Shannon capacity, has been proposed for use in LTE networks. Nonetheless, the existing alpha-Shannon capacity(More)
Modulation and Coding Schemes (MCSs) is one of the parameters that can be adapted according to the channel condition. The IEEE 802.16 system specifies several MCSs, such as QPSK, 16-QAM, 64-QAM in case of modulation and 1/2, 2/3, 3/4, 5/6 in case of coding. However, the specification does not provide a policy to select MCS for various link conditions. In(More)
Access point selection is an issue frequently faced by mobile user due to constant movement. By connecting to the best Wireless Local Area Network (WLAN) Access Point (AP), mobile users can enjoy the advantages of power consumption reduction while sustaining good communication quality. In this paper, a new approach to intelligently selecting access point in(More)
Peer-to-peer (P2P) systems have been widely used in today's network. The limitation of server-client systems in number of clients that can be served leads to invent p2p systems enable sharing of contents with individual nodes in the network. In p2p systems tasks such as video streaming are shared among individual nodes directly to other nodes in the(More)
Acoustic Echo Cancellation (AEC) has become a necessity in today’s conferencing system in order to enhance the audio quality of hands-free communication systems. In recent years, many researchers and manufacturers have developed various AEC algorithms for telecommunication solutions in order to improve the quality of service. Many factors influence the(More)
The ability of an intrusion detection system (IDS) to accurately detect potential attacks is crucial in protecting network resources and data from the attack's destructive effects. Among many techniques available for incorporation into IDS to improve its accuracy, classification algorithms have been demonstrated to produce impressive and efficient results(More)
Packet size and modulation scheme can play an important role on optimizing the data rate of Long Term Evolution (LTE) system. The performance of the existing LTE system is evaluated in this paper in term of throughput and packet loss for Orthogonal Frequency-Division Multiple Access (OFDMA) modulation scheme with different packet sizes. The performance of(More)