Sakchai Thipchaksurat

King Mongkut's Institute of Technology Ladkrabang · Department of Computer Engineering

In this paper, we present the impact of mobility on our scheme called Location-based Routing with Adaptive Request Zone (LoRAReZ). In LoRAReZ, the size of expected zone and request zone are set adaptively based on the distance between the source node and destination node. We evaluate the impact of mobility on the performance of LoRAReZ in terms of...

In Mobile Ad Hoc Network (MANET), many routing protocols have been proposed to find the route from source node to the destination node. However, the process for discovering the route may increase the routing overhead. In this paper, we improve our previous scheme to reduces routing overhead with adaptive request zone which is called Adaptive Reques...

In wireless OFDM systems the system performance is suffered from frequency offset and symbol timing offset due to the Doppler effect Using the discrete Fourier transform (DFT) and Inverse discrete Fourier transform (IDFT) for traditional signal transformation from the time domain into frequency domain and vice versa the system performance may be se...

In this paper, we propose a modified scheme of MSODB and PMS, called Predictive User Mobility Behavior (PUMB) to improve performance of resource reservation and call admission control for cellular networks. This algorithm is proposed in which bandwidth is allocated more efficiently to neighboring cells by key mobility parameters in order to provide...

In this paper, we propose a scheme for improved performance of resource reservation and call admission control for cellular networks called Predictive User Mobility Behavior (PUMB) scheme. This algorithm is proposed in which bandwidth is allocated more efficiently to neighboring cells by key mobility parameters in order to provide Quality of Servic...

In this paper, we propose a scheme for improved performance of resource reservation and call admission control for cellular networks called predictive mobility support demand (PMSD) scheme. This scheme is proposed in which bandwidth is allocated more efficiently to neighboring cells by key mobility parameters in order to provide QoS guarantees for...

All mobile nodes participating in a group communicate with one another in the group through a shared radio link without cable or backbone composes an infrastructureless network, called mobile ad hoc network (MANET). Because network topology may be changed at any time as result of mobility of nodes and the failure of available routes, quality-of-ser...

All communications in a network made by mobile hosts through a shared radio link without cable or backbone, commonly called mobile ad hoc network (MANET). Since the network topology may change constantly because of mobility of nodes and the available routes may fail many times, quality-of-service (QoS) of real-time multimedia application may have d...

In this paper, we present the system control design via AC line for the security system. The system comprises houses and control node such as center control, node control and home control which are connected as the two levels network called master-slave model. Our system can support the data rate up to 9,600 bits per second with the maximum distanc...

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We investigate the validity of the analytical model of new call channel limiting scheme (NCCL) by means of simulation. NCCL limits new calls to access the total channels with parameter a while handover calls have no restriction to access the channels. We focus on the effects of users' mobility and the parameter a on the blocking probabilities of ne...

In cellular networks, the system performance can be degraded because of the inefficient use of channels with the two types of traffic, that is, the new call traffic and handover call traffic. This problem can be alleviated if the channels are used efficiently for new call traffic and handover call traffic. In this paper, we consider the proper rati...

Ad hoc network is a set of mobile nodes that each mobile host is able to move freely and the network is unpredictable topologies transformation. Therefore, the searching for transmission path becomes difficult and complicated. Because each mobile host in ad hoc network acts as a switching node that routes and forward packets to its neighboring mobi...

Thai speech synthesis is a process which artificially produces Thai speech for text-to-speech synthesis. In this paper, we propose a rule-base approach formant synthesis to synthesis Thai speech. This method is new technique in Thai speech synthesis. In this method, the core component is the construction of intonation patterns is called rules. Thes...

Ad hoc network is a set of mobile nodes that each mobile host is able to move freely and the network is unpredictable topologies transformation. Therefore, the searching for transmission path becomes difficult and complicated. Because each mobile host in ad hoc network acts as a switching node that routes and forward packets to its neighboring mobi...