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It has been shown that the rate of preterm birth in remote and rural populations in Australia is more than twice of those in the metropolitan population, and that increased access to quality antenatal care in such communities leads to a significant improvement. This paper describes a system that supports remote fetal heart rate monitoring, thus providing a technique that addresses this need for better...
This paper investigates the spectrum sensing issues in the cognitive radio (CR) networks of opportunistic unlicensed spectrum access. The cognitive radios can perform a communication using the incumbent user spectrum band without the interference caused by the cognitive radio users. In this case, the cognitive radios must know the real-time radio environments of the incumbent user spectrum band using...
FCC had decided to open the TV white spaces on an unlicensed basis for efficient usage of under-utilized spectrum and to enable the easy introduction of a new service on TV white spaces after DTV transition through the 2nd Report and Order adopted on Nov. 11 2008. According to the order, modified CFR will enable a new unlicensed TV white space device to operate on the TV white spaces after June 12...
In this paper we evaluate the coded and uncoded performance of a 2-antenna terminal relaying scheme, for downlink OFDM based systems, using efficient space-frequency block coding protocols. We consider that the relay and the base station are equipped with 2 antennas and the user terminal has a single antenna. Two types of relay protocols are accounted for: equalize-and-forward and decode-and-forward...
In this paper, we implement implantable cardioverter defibrillator (ICD) system. In order to implement the ICD, we propose the baseband according to modulation method, modulation index and bandwidth time product. From simulation results, we decide GFSK modulation with modulation index 0.2 and bandwidth time product 0.5. Also the receiver sensitivity of ICD link budget decides -83.22 dBm using receiver...
The Internet Protocol Television (IPTV) service provides rich multimedia services over IP networks and is widely believed to be the next killer application over the Internet. It is generating a lot of interest, especially in potential service providers who are eager to develop successful business models that will ensure their survival in this emerging market. We believe that the success of an IPTV...
Sensor networks are being researched and deployed in wide range of applications in healthcare. These networks when centered on the proximity of human body create an unique structure. The IEEE 802.15 Task Group 6 (TG6), body area networks (BAN) or Wireless BAN (WBAN) is formed to address specific needs of this area. The task group is developing a communication standard optimized for low power devices...
Wireless network based u-Health services enable people's health care anytime, anywhere. Recently technology advance in the area of sensing, networking, processing is developed rapidly. This advance of information technology is raising the change of traditional healthcare system. By using wireless and mobile networks, patients could be monitored and managed outside hospitals and also examined with...
This paper presents the trend of physical layer designs for WBAN systems in IEEE 802.15.6 proposals. According to the technical requirement of the WBAN task group, many companies and research institutes have proposed physical layer architectures to provide fundamental technologies for the WBAN communication systems. Since there are various service scenarios for in-body or on-body applications, the...
Cooperative communications has emerged as an efficient realization of multiple input and multiple output (MIMO) systems. To reap the benefits of cooperative communications we follow the block-Markov code book structure. Recently a low cost and efficient operational implementation of block-Markov coding, using network coding, has been proposed. In this paper, we derive the closed form expression for...
In a multiple-input multiple-output (MIMO) multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) system, coherent detection where the channel state information (CSI) is assumed to be exactly known at the receiver requires the transmission of a large number of symbols for channel estimation, thus reducing the bandwidth efficiency. This paper examines the use of unitary...
This study evaluated the level of performance improvement in the form of a simulated experiment by adding fixed node in the middle of the network as a way to improve mobile ad.hoc network performance. The result showed that the performance level was much higher when fixed node was used together than when mobile node was used only, and the comparison of the mobile speed of mobile node also showed that...
The threat of distributed denial of service (DDoS) has become a major issue in network security and is difficult to detect because all DDoS traffics have normal packet characteristics. Various detection and defense algorithms have been studied. One of them is an entropy-based intrusion detection approach that is a powerful and simple way to identify abnormal conditions from network channels. However,...
In multi-hop wireless networks, we often encounter a situation where there are some candidate paths between source node S and destination node D, and have to choose a path from the candidates. Although ordinary routing protocols select paths with minimum hops, QoS (quality of service) routing protocols evaluate paths using measures of QoS, such as expected transmission count (ETX). In multi-hop wireless...
e-Health services are gaining popularity due to largely reduced cost and wider range of advanced services. Securing e-health data transmission is challenging due to both (a) the criticality of personal medical information on effective medical treatment and privacy protection and (b) the significant computational needs of encryption algorithms. In this paper, a cost-effective security framework that...
In indoor visible light communication channels and LED road illumination communications for the Intelligent Transport Systems (ITS), inter symbol interference (ISI) due to multipath propagation prevents high data rate transmission. Indoor wireless optical communication systems utilizing white LED lights and on the road illumination have been studying about it. Generally, plural lights are installed...
The problem of multiple emitters direction finding using an array of sensors is addressed. We describe a sparsity-based covariance-matrix fitting method. The procedure consists of finding a sparse representation of the sample covariance matrix, using an over-complete basis obtained from array manifold samples. Sparsity is encouraged by an lscr1-norm penalty function. The penalty function is minimized...
This paper proposes an AI-based heuristic optimization techniques based on particle swarm optimization (PSO) to solve two applications i.e. identification of a DC motor and tuning PID controller parameters. The identification of a DC motor application, the 2nd order transfer function with time delays is obtained by the searching poles location mechanism based on PSO. This method has following steps...
This paper presents a new approach to add asynchronous sending devices like Laptops or Personal Computers to the RAPIEnet (Real-time Automation Protocol for Industrial Ethernet) network without affecting the real-time performance. As a research result in formal modeling, we present a way to generate bipartite conflict graphs out of a given network infrastructure and communication requests of the devices...
As EU directives require that all administration should perform their procurement processes electronically by 2010, an open-source application framework for building electronic public procurement (ePP) solutions was developed within the ELLECTRA-WeB project. As a part of this project the Republic of Macedonia adapted the ePP solution to support the public procurement lifecycle. This paper presents...
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