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    A Study of Network Throughput Gain in Optical-Wireless (FiWi) Networks Subject to Peer-to-Peer Communications

    Zeyu Zheng ; Jianping Wang ; Jin Wang
    Communications, 2009. ICC '09. IEEE International Conference on

    DOI: 10.1109/ICC.2009.5198676
    Publication Year: 2009 , Page(s): 1 - 6
    Cited by:  Papers (9)

    IEEE Conference Publications

    Optical-Wireless (FiWi) access network is a newly emerged access network architecture which integrates passive optical networks (PONs) with wireless mesh networks (WMNs) to provide the ubiquitous, low cost, high bandwidth last mile Internet access. Though the PON subnetwork of FiWi network can provide high bandwidth, the interference in the wireless subnetwork still limits the throughput of FiWi network if all traffic goes online to the Internet. However, when peer-to-peer communication from one wireless client to another wireless client is introduced, the proposed integration of PONs and WMNs can significantly improve the network throughput. In traditional WMNs, peer-to-peer communication from one wireless client to another wireless client is carried in the wireless network, which is subject to interferences in wireless communications. In FiWi network, peer-to-peer communication can be carried through the wireless-optical-wireless mode in which the traffic is sent from the source wireless client to its nearest ONU, which is then sent to the ONU close to the destination wireless client through the PON subnetwork and then delivered to the destination wireless client. Such wireless-optical-wireless communication mode introduced by FiWi networks can sustain the interference in wireless subnetwork, thus improving the network throughput. This paper aims to study the network throughput gain in FiWi network subject to peer-to-peer communications and parameters which can affect the network throughput gain. We first have a fair modeling of FiWi networks and traditional WMNs. We then present an LP based routing algorithm for FiWi networks. Extensive simulations have been carried to study the network throughput gain in FiWi networks subject to peer-to-peer communications compared with traditional WMNs. The work provides insightful observations for fully utilizing advantages brought by the integration of PONs and WMNs in FiWi networks. View full abstract»

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    Optical wireless communication to eco-system

    Deicke, F. ; Fisher, W. ; Faulwasser, M.
    Future Network & Mobile Summit (FutureNetw), 2012

    Publication Year: 2012 , Page(s): 1 - 8

    IEEE Conference Publications

    Currently, there is enormous progress in the field of optical wireless communication. There is the well known IrDA organization approved 1 Gbps Giga- IR standard and established a new 10 Giga-IR WG recently. In addition there are many more players fostering that kind of wireless technology. There is the IEEE 802.15.7 task group founded in 2008 and focusing on visible light communication in combination with state of the art illumination. Data rates are available up to 100 Mbps with link distances up to some meters. Furthermore, there are other organizations like VLCC, ISO and the Li-Fi Consortium as well as various scientific approaches to make optical wireless usable in the public. Additionally optical wireless communication can be seen in a broader field meaning a complete optical eco-system comprising wireless communication, navigation, natural user interfaces and many more. This paper will introduce different cutting-edge technologies regarding optical wireless communication, research and standardization work as well as provide an overview of various applications where those technologies can be used advantageously. Current application scenarios are, for example, complete wireless terminal solutions for portable devices, Car2X communication or wireless indoor communication. It also explains Li-Fi and the idea of a new eco-system combining different optical wireless technologies. View full abstract»

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    Optical wireless communication for real time swimmers feedback: A review

    Hagem, R.M. ; Thiel, D.V. ; O'Keefe, S.G. ; Fickenscher, T.
    Communications and Information Technologies (ISCIT), 2012 International Symposium on

    DOI: 10.1109/ISCIT.2012.6380853
    Publication Year: 2012 , Page(s): 1080 - 1085
    Cited by:  Papers (2)

    IEEE Conference Publications

    Underwater optical wireless communication applications include robot communication, data monitoring and collection and control applications (SCADA). Underwater optical wireless communication using visible light is used because of the high data rate compared to acoustic technology and low path attenuation compared to radio frequency (RF) technology. The blue-green wavelength has minimum attenuation for absorption and scattering. One application for optical wireless communications is real time swimmers feedback. This system requires short range communication over 1 m between sensors mounted at the swimmer's wrist and a receiver on his/her goggles. The link was sometimes line of sight (LOS) and sometimes non line of sight (NLOS). Air bubbles generated from a swimmer causes additional link attenuation. Pool lighting may cause interference both above and below the water. The final unit should be low cost, have low power consumption and small size to reduce drag. This paper reviews technology used to give real time feedback to a swimmer during swimming. This new technology should help swimmers improve their performance during training. Different optical wireless systems using LEDs as a light source are presented. The authors investigated in the previous work the effect of air bubbles and they designed, implemented and tested an optical wireless communication system based on light emitting diode (LED) and integrated detector preamplifier (IDP). Both the position and the orientation of the transmitter and the receiver change during the swimmer's actions. Simulation results for the line of sight (LOS) communication link and the non line of sight (NLOS) with the effect of air bubbles were used to evaluate the effect on the underwater optical signal. Link budgets were calculated for different light sources. This paper reviews research in underwater optical wireless communication system using LEDs as a light source. The applications to swimming monitoring is presented. View full abstract»

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    A Duplex Wireless Audio Communication System

    Ying, Yun ; Shuguang, Dai ; Ping'an, Mu ; Tianfa, Su
    Electronic Measurement and Instruments, 2007. ICEMI '07. 8th International Conference on

    DOI: 10.1109/ICEMI.2007.4350642
    Publication Year: 2007 , Page(s): 2-150 - 2-153

    IEEE Conference Publications

    This paper mainly introduced the principle, hardware, software, functions and technical difficulties of the system. This system applied wireless communication technique, audio frequency technique and network technique. The functions were carried out by embedded system. Its core part was micro-controller unit ET44M210, and it included several sub-systems. They were J2A audio encoding and decoding sub-system, RF wireless communication sub-system, OLED manifestation sub-system, alarm sThis paper mainly introduced the principle, hardware, software, functions and technical difficulties of the system. This system applied wireless communication technique, audio frequency technique and network technique. The functions was carried out by embedded system. Its core part was micro-controller unit ET44M210, and it included several sub-systems. They were J2A audio encoding and decoding sub-system, RF wireless communication sub-system, OLED manifestation sub-system, alarm sub-system and FLASH memory sub-system. This system was used in the hospital and it can make real-time communication, medical record management, calling alarm and calling manifestation integrate together then worked perfectly with each other. This duplex wireless audio communication system contacted patient and paramedic quickly and efficiently, so it can raise the nursing efficiency, lighten the intensity of labour, improve the service level of hospital. View full abstract»

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    Technology Study of Wireless Communication System under the Coal Mine Tunnel

    Pan Tao
    Intelligent System Design and Engineering Application (ISDEA), 2010 International Conference on

    Volume: 2
    DOI: 10.1109/ISDEA.2010.206
    Publication Year: 2010 , Page(s): 553 - 556
    Cited by:  Papers (1)

    IEEE Conference Publications

    Wireless communication is very important for the safety production in coal mine. In this paper, two key technologies which are operating frequency and network structure about the wireless communication system in the coal mine tunnel have been studied. Through the study, we get the conclusion that the recommended operating frequency is above 2GHz and the favorable network structure adopts the structure of base station with switch. We also develop a multifunction wireless communication system which can achieve the functions of wireless communication, personnel management and video surveillance. Practical applications showed that the multifunction wireless communication system can satisfy the need about wireless dispatch communication in the coal mine tunnel. View full abstract»

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    Modeling and simulation of magnetic induction wireless communication for a deepwater mooring system

    Zhen Zhao ; Ge, S.S. ; Wei He ; Yoo Sang Choo
    Information and Automation (ICIA), 2012 International Conference on

    DOI: 10.1109/ICInfA.2012.6246833
    Publication Year: 2012 , Page(s): 373 - 378

    IEEE Conference Publications

    Subsea is a challenging environment for wireless communication due to that the propagation medium is no longer air, but different densities of water, soil in the seabed, iceberg, and rock. The most popular underwater wireless communication technique using acoustic wave does not work well for that the transmission speeds show different characteristics in the underwater environment. In this paper, the principle for magnetic wireless communication is analyzed. Meanwhile, transmission loss between tranceivers is investigated based on the analysis. The simulation model of the MI wireless communication is built based on the theoretical analysis. The simulation result shows the feasibility and effectiveness of the proposed magnetic induction wireless communication model. View full abstract»

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    Dynamic simulation and performance optimization of wireless communication in urban rail transportation

    Wen Wei ; Jin Shi ; Ming Jiang ; Huijun Che ; Lei Chen
    Intelligent Rail Transportation (ICIRT), 2013 IEEE International Conference on

    DOI: 10.1109/ICIRT.2013.6696287
    Publication Year: 2013 , Page(s): 163 - 168

    IEEE Conference Publications

    A systematic numerical algorithm is proposed for the planning and optimization of wireless communication network in urban rail transportation. The algorithm is based on a few statistical wireless channel parameters which are relatively easy to obtain. In this method, the performance of the wireless communication network can be dynamically evaluated via simulation while adjusting base stations' positions in a WYSWYG way. Also, transportation management information, such as the dynamic train speed, the online number of vehicles and the daily operating time, are taken into consideration in calculating the performance of wireless communication network. Further, a numerical multi-object optimization method is described to calculate the optimal network planning under different restrictions. Both the simulations performed in a lab using real wireless communication equipment and the project of Communication Based Train Control lately tested in Beijing metro line 8 have shown the effectiveness of this method. View full abstract»

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    An algorithm of dynamic resource reservation for multimedia wireless communication

    Ying-Hong Wang ; Kuo-Jan Tseng ; Yi Hsieh
    Advanced Information Networking and Applications, 2005. AINA 2005. 19th International Conference on

    Volume: 2
    DOI: 10.1109/AINA.2005.89
    Publication Year: 2005 , Page(s): 55 - 59 vol.2

    IEEE Conference Publications

    Wireless communication that provides voice only is not sufficient to support the necessity of user. In the future, the major advantage of third generation wireless communication (3G) are providing packet data communication, mobile Internet, and mobile multimedia data communication. This kind of data type requires more bandwidth to transmit data. Sometimes, the communication would be encountered the transmitting block because the new cell has no enough resource allocating to mobile station (MS or MH) in handoff. How to reduce the losing probability of data packets in wireless communication networks is important things which can raise the quality of service (QoS) and degrade the time and resource consume. In this paper, a resource reservation method is proposed to improve QoS and resource switching management to reduce data packet loss for multimedia communication at handoff operation. View full abstract»

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    The applications of networking of consumption data acquisition system by combining broadband powerline communication and wireless communication

    Zhiming Wang ; Weichun Ge ; Chenggang Wang ; Chaoming Zeng
    Innovative Smart Grid Technologies - Asia (ISGT Asia), 2012 IEEE

    DOI: 10.1109/ISGT-Asia.2012.6303277
    Publication Year: 2012 , Page(s): 1 - 4

    IEEE Conference Publications

    The main approach of the uplink channel of powerline broadband meter reading from the community to the control master station is wireless, that is, the concentrator connects the master station by the internal wireless module. A new networking approach was proposed in this paper to solve the uplink channel problem in non-signal or poor-signal areas encountered in the on-site implementation.At present, wireless communication modules of the concentrator are installed as discrete modules. The uplink wireless communication and the local powerline communication were achieved by the internal gateway of the concentrator.Specifically, to select a building with good powerline communication and install a powerline broadband private gateway and wireless communication module (with antenna) on the high window with good signal but little shelter to make a "upside-down" communication structure.At the same time, the downlink from the main station to the concentrator is also reversible. Compared with the original method, the difficulty of construction and the investment on resources and manpower of the new approach are more cost-effective; from the perspective of the working principle, in the two-way transmission of the powerline by broadband carrier communication, the wireless access point can be selected more flexibly and the information is of much reliability, stability and security, as well as the data transfer rate is higher, and the bandwidth recourses can be fully utilized. View full abstract»

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    SWICOM: An SDR-Based Wireless Communication Gateway for Vehicles

    Boncheol Gu ; Jinman Jung ; Kyongdong Kim ; Junyoung Heo ; Namhoon Park ; Gwangil Jeon ; Yookun Cho
    Vehicular Technology, IEEE Transactions on

    Volume: 59 , Issue: 4
    DOI: 10.1109/TVT.2009.2040004
    Publication Year: 2010 , Page(s): 1593 - 1605
    Cited by:  Papers (1)

    IEEE Journals & Magazines

    A wide range of emerging and promising wireless communication protocols are rapidly being introduced into vehicles. They are commonly used for in-car infotainment, telematics, and safety applications. However, adopting new wireless communications into vehicles requires them to be equipped with the corresponding hardware devices. This hardware dependency incurs extra costs to customers to deploy and maintain wireless services in vehicles. To alleviate this problem, this paper proposes a novel wireless communication gateway for vehicles that is called the software-defined radio (SDR)-based wireless communication gateway (SWICOM). It exploits the SDR technology that uses software running on a generic hardware platform to perform signal processing instead of dedicated hardware. The SWICOM can thus integrate multiple wireless hardware devices into a single generic wireless gateway device, which improves flexibility, adaptability, and connectivity of wireless communications. We built its prototype implementation and performed measurements to quantify its run-time performance. The worst-case execution time (WCET) analysis is also given using synchronous data flow (SDF) graphs. All entire results clearly show the viability of the SWICOM. View full abstract»

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    Reliability Analysis of DSRC Wireless Communication for Vehicle Safety Applications

    Fan Bai ; Krishnan, H.
    Intelligent Transportation Systems Conference, 2006. ITSC '06. IEEE

    DOI: 10.1109/ITSC.2006.1706767
    Publication Year: 2006 , Page(s): 355 - 362
    Cited by:  Papers (30)

    IEEE Conference Publications

    The 802.11-p based dedicated short range communication (DSRC) is being seriously considered as a promising wireless technology for enhancing transportation safety and highway efficiency. However, to-date, there is very little research done in characterizing the reliability of DSRC communication based on real-world experimental data, and its effect on the reliability of vehicle safety applications. Our experimental set-up includes a fleet of three vehicles equipped with DSRC communication system, GPS receiver and a number of vehicle safety applications based on vehicle-to-vehicle communication. This paper analyzes the link-level behavior of DSRC vehicle-to-vehicle communication in a wide variety of traffic environments based on real-world experimental data. In addition, we also characterize the application level reliability of DSRC for vehicle safety communication (VSC) system. Based on our experiments, we show that the reliability of DSRC vehicle-to-vehicle communication is adequate since packet drops do not occur in bursts most of the time. We also show that the application level reliability of VSC applications based on DSRC communication is quite satisfactory. Finally, we develop an analytical model to relate application level reliability with communication reliability and VSC system parameter, laying out a clear way to improve reliability of VSC applications under harsh traffic environments. To the best of our knowledge, this paper is the first to characterize the application-level reliability of DSRC communication for VSC applications based on real-world experimental data. Our findings develop a deep insight into significant characteristics of DSRC communication for highly mobile vehicle-to-vehicle wireless network, which will contribute to better design and evaluation of communication protocols for VSC applications in the future View full abstract»

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    Research on Zigbee wireless communication technology

    Wei Wang ; Guangyu He ; Junli Wan
    Electrical and Control Engineering (ICECE), 2011 International Conference on

    DOI: 10.1109/ICECENG.2011.6057961
    Publication Year: 2011 , Page(s): 1245 - 1249

    IEEE Conference Publications

    Zigbee wireless communication technology is a kind of newly arisen wireless network technology; the characteristic is short distance communication, low speed, low power dissipation, and low cost. It, application of Zigbee wireless communication technology, makes that inconvenient wire repeat can be avoided in the area of home, factory, hospital, etc. With the rapid development of IT industry and the strong functional expansion of SCM, Zigbee wireless communication technology will play an important role in wireless sensor network (WSN). In this paper, Zigbee wireless communication technology and the process of establishing Zigbee network are introduced, the application of Zigbee wireless communication technology is studied in the real world. View full abstract»

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    On 10Gbps Terahertz wireless communication systems

    Li Mingliang ; Wang Cong
    Control Conference (CCC), 2010 29th Chinese

    Publication Year: 2010 , Page(s): 4180 - 4184

    IEEE Conference Publications

    In order to increase the short range wireless communication to 10 Gbps, a Terahertz wireless communication system combing electro-optical technology with THz band (125 GHz) for carrier was build, which adopted 125 GHz optical THz generator, UTC-PD module, HEMT module and cassegrain antenna (CA) or Gaussian optic lens antenna (GOA) to improve system performance. It gives the researches about theoretical analysis and simulation results on output power, noisiness, relation between communication quality and antenna, data transmission feature, maximum transmission distance and so on. Experimental result shows that: the carrier to noise ratio of emission signal meets error-free transmission demand, 125 GHz waveband wireless communication supports OC-192 network interface and 10 GbE network interface. So, it's feasible to realize 10 Gbps wireless communication using electro-optical technology. View full abstract»

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    The research and design of wireless communication system for substation

    Wei Lei ; Zhu Hong ; Jiao Qun ; Huang Zaichao
    Electricity Distribution (CICED), 2010 China International Conference on

    Publication Year: 2010 , Page(s): 1 - 9
    Cited by:  Papers (2)

    IEEE Conference Publications

    Along with the advancing of intelligent grid construction, the information access inside substations has become increasingly flexible, and traditional in-substation wire communication could not meet such demand any longer. Through comparative analysis on the transmission bandwidth, QOS, reliability and safety of various wireless communication techniques in common use at present, and with IEEE802.11 (Wi-Fi) as in-substation wireless communication method and Mesh as networking technology, this paper has designed a set of whole-substation-through wireless communication systems. Such systems could realize overall coverage of communication in substations, make it convenient for the seamless access and interconnection of different communication equipments, and materialize the plug and play of communication equipments. In addition, in the electromagnetic environment of some 220kV substation in Nanjing, and based on the experiment and computational analysis on the anti-electromagnetic interference ability of secondary equipment in the substation, this paper has determined the feasibility of substation wireless communication systems. View full abstract»

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    Experimental study of propagation characteristic for maritime wireless communication

    Ki-Beom Kim ; Ali, M. ; Jee-Hoon Lee ; Seong-Ook Park
    Antennas and Propagation (ISAP), 2012 International Symposium on

    Publication Year: 2012 , Page(s): 1481 - 1484

    IEEE Conference Publications

    Wireless communication is one of the most important communication system at sea. But insufficient knowledge of radio channel characteristics over sea limits the development of wideband wireless communication systems for maritime applications. In maritime communication, the presence of sea and nearby islands gives rise to multi-path fading. Due to the difficulties to determine base station position for maritime wireless communication and the cost of satellite communications in the marine environment, the analysis of propagation characteristics on coast and sea is very essential for broadband wireless communication. An experimental study on wave propagation in Korea West Sea at 2.58 GHz is presented in this paper. Measurement setup and associated measurement procedure are described in section 2. while kfactor and propagation curve results are analyzed in the sections 3. and 4. respectively. View full abstract»

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    Impact of wireless communication delay on load sharing among distributed generation systems through smart microgrids

    Song Ci ; Junjie Qian ; Dalei Wu ; Keyhani, A.
    Wireless Communications, IEEE

    Volume: 19 , Issue: 3
    DOI: 10.1109/MWC.2012.6231156
    Publication Year: 2012 , Page(s): 24 - 29
    Cited by:  Papers (1)

    IEEE Journals & Magazines

    Load sharing among distributed generation systems (DGS) is one of the most important topics in wireless-enabled smart microgrids, where a set of power inverters at different geographical locations work coordinately and collaboratively through wireless networks to meet the load requirement. Parallel power inverters operated in distributed generation systems rely on the underlying wireless communication channels to exchange power information among them for load sharing control. However, existing work in the area of load sharing has largely ignored the effect of wireless communication delay. Study has shown that the time-varying wireless communication delay may have a significant impact on the performance of power inverters. In this work, we aim to fill this gap and study the performance of distributed power inverters under the scenario of wireless-enabled smart microgrids. We first study the power inverter performance by taking into account the time-varying wireless communication delay. Then, we propose an optimal controller to overcome the delay problem and to provide a smooth load sharing performance. Both theoretical and simulation results show the effectiveness and responsiveness of the proposed controller design. View full abstract»

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    An SDR-Based Wireless Communication Gateway for Vehicle Networks

    Boncheol Gu ; Junyoung Heo ; Sangchul Oh ; Namhoon Park ; Gwangil Jeon ; Yookun Cho
    Asia-Pacific Services Computing Conference, 2008. APSCC '08. IEEE

    DOI: 10.1109/APSCC.2008.61
    Publication Year: 2008 , Page(s): 1617 - 1622
    Cited by:  Papers (1)

    IEEE Conference Publications

    As telematics and infotainment services are becoming more and more prevalent on the roadway, modern vehicles need to be equipped to support various wireless communication standards. The conventional ways for implementing those standards are dependent on their dedicated hardware chips, and thus in order to add a new standard or change an obsolete standard, a new dedicated hardware chip should be installed. Software defined radio (SDR) technology enables software components running on a generic hardware platform to perform signal processing instead of hardware chips. Thus, it is possible to support multi-standard, multi-band and multi-mode solutions and easy to enhance and reconfigure wireless communication. In this paper, we propose an SDR-based wireless communication gateway for vehicle networks. It integrates multiple wireless devices into one single wireless gateway reducing maintenance costs of hardware chips and improving flexibility, adaptability and connectivity of wireless communication. In order to provide the proof of concept, we present its application to digital multimedia broadcasting service. View full abstract»

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    Reliability analysis for various communication schemes in wireless CORBA

    Xinyu Chen ; Lyu, M.R.
    Reliability, IEEE Transactions on

    Volume: 54 , Issue: 2
    DOI: 10.1109/TR.2005.847268
    Publication Year: 2005 , Page(s): 232 - 242
    Cited by:  Papers (15)

    IEEE Journals & Magazines

    For the purpose of designing more reliable networks, we extend the traditional reliability analysis from wired networks to wireless networks with imperfect components. Wireless network systems, such as wireless CORBA, inherit the unique handoff characteristic which leads to different communication structures with various components & links. Therefore, the traditional definition of two-terminal reliability is not applicable any more. We propose a new term, end-to-end expected instantaneous reliability, to integrate those different communication structures into one metric, which includes not only failure parameters but also service parameters. Nevertheless, it is still a monotonously decreasing function of time. The end-to-end expected instantaneous reliability, and its corresponding MTTF, are evaluated quantitatively in different wireless communication schemes. To observe the gain in overall reliability improvement, the reliability importance of imperfect components are also evaluated. The results show that the failure parameters of different components take different effects on MTTF & reliability importance. With different expected working time of a system, the focus of reliability improvement should change from one component to another in order to receive the highest reliability gain. Furthermore, the number of engaged components during a communication state is more critical than the number of system states. For simplicity, we assume that the wired & wireless communication links are perfect, and omit them in the reliability analysis. If these two are engaged into the proposed end-to-end expected instantaneous reliability, it can give a more detailed & complete reliability assessment of a wireless network system. Our quantitative measurements are conducted as an example with the assumption that the failure & service rate are constant; however, in practice, failure & service processes may follow other distributions. After all, our investigation provides an initial yet overall approach to measure the reliability of wireless networks. Although our analysis is conducted on wireless CORBA platforms, it is easily extensible to generic wireless network systems. View full abstract»

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    Simulation research of wireless communication system of LDPC code based on the adaptive modulation and precoding joint optimization technology

    Zhi-hua Yang ; Shao-qing Zhang ; Kai Zhang
    Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

    DOI: 10.1109/MACE.2011.5987977
    Publication Year: 2011 , Page(s): 4388 - 4391

    IEEE Conference Publications

    In order to improve the wireless communication system reliability and throughput, the adaptive modulation and preceding joint optimization wireless communication system model is designed Simulated experiments of this joint optimization wireless communication system model are done in VC++ environment. The experimental results show that the designed wireless communication system of LDPC code based on the adaptive modulation and precoding joint optimization technology can considerably increase wireless transmission system throughput, and has Lowerber BER than Higher-order modulation preceding wireless communication system. View full abstract»

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    A physical layer secure wireless communication scheme with partial CSI for high speed railway

    Cui Yaping ; Xuming Fang
    High Mobility Wireless Communications (HMWC), 2013 International Workshop on

    DOI: 10.1109/HMWC.2013.6710289
    Publication Year: 2013 , Page(s): 48 - 52

    IEEE Conference Publications

    The high speed railway wireless communication system is quite different from public wireless communication system, because the service is train control message, which are closely related to the safety of train transportation. Thus it has much higher requirements for the safety and reliability. In this paper, secrecy capacity and outage probability at the high speed railway scenario with traditional MIMO and beamforming schemes are analyzed. The analytic results show that MIMO scheme can not meet the safety requirements and the beamforming scheme is also helpless while the eavesdropper is close to eNodeB. In order to guarantee the transmission safety of train control messages, a physical layer secure scheme with artificial noise (AN) is proposed for high speed railway communication system. In this proposed scheme, beamforming and AN transmitting directions are adjusted accordingly with the onboard legitimate receiver's channel state information (CSI) and eavesdropper's partial CSI to degrade the eavesdropper while maximize the system secrecy capacity. Simulation results demonstrate the proposed scheme decreases the outage probability under the secrecy capacity constraint, and can meet the safety communication requirements. View full abstract»

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    Congestion Control for Industrial Wireless Communication Gateway

    Tang Zhong ; Mei Zhan ; Wang Hong
    Intelligent Computation Technology and Automation (ICICTA), 2010 International Conference on

    Volume: 1
    DOI: 10.1109/ICICTA.2010.342
    Publication Year: 2010 , Page(s): 1019 - 1022

    IEEE Conference Publications

    The wireless communication technologies, such as wireless sensor network, can bring great economic benefits to industrial plants. But the open channel and multi-hop network topology will influence its real-time and reliable performance. Funneling effect is a kind of congestion caused by the wireless hop-by-hop and many-to-one networks. IEEE802.15.4 is a wireless personal area network standard that can be used in industry field monitoring and control. An industrial wireless communication protocol for factory automation systems is presented based on IEEE802.15.4. To solve the funneling effect, an on-demand TDMA is expanded in the Media Access Control layer superframe of the gateways and a priority-based communication scheduling mechanism is adopted in the routing devices near the gateways. The analysis shows this technique can be compatible with IEEE802.15.4, avoid the funneling effect, guarantee the communication performance and satisfy the requirements of the industrial applications. View full abstract»

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    Wireless chip-to-chip communication in three-dimensional integrated circuits using microbump antennas

    Wing-Fai Loke ; Lu, J.H.-L. ; Peroulis, D. ; Byunghoo Jung
    Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International

    DOI: 10.1109/MWSYM.2013.6697411
    Publication Year: 2013 , Page(s): 1 - 4
    Cited by:  Papers (1)

    IEEE Conference Publications

    Three-dimensional integrated circuits (3-D ICs) present the possibility of high performance computing networks. Complicated wired data communication between 3-D ICs in such networks limits the overall computing performance. Wireless data communication between 3-D ICs can be used to alleviate the latency, flexibility, and expandability issues faced by wired communication. We present a hybrid 3-D IC structure that uses both wireless and wired communications. The wireless communication uses a novel meandering microbump antenna. Simulations show that the proposed antenna has a wide bandwidth (28.3 GHz), allowing high wireless data capacity in several tens of Gbps. The compact size of the antenna and the high wireless data capacity demonstrate the feasibility of a hybrid wired/wireless 3-D IC structure. View full abstract»

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    Wireless communication protocol for agricultural machines synchronization and fleet management

    Revenaz, A. ; Ruggeri, M. ; Martelli, M.
    Industrial Electronics (ISIE), 2010 IEEE International Symposium on

    DOI: 10.1109/ISIE.2010.5637476
    Publication Year: 2010 , Page(s): 3498 - 3504
    Cited by:  Papers (3)

    IEEE Conference Publications

    In the last years, Precision Farming and Farm Automation in Agricultural field, have been requesting short range wireless communication systems for machine synchronization and long range wireless communication for fleet management, and for production and task control in real time. Existing protocols can meet the requirements only partially: different legislation and product availability in different countries make it difficult to identify a solution for the global market. TCP/IP protocol and GPRS/GSM networks meet the requirements for long range communication, but not for real time communication needed for short range communication. The paper presents a comprehensive proposal based on UDP and TCP/IP protocols with embedded controls, apt to create a quasi-isochronous wireless communication for machine synchronization. View full abstract»

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    Wireless traffic service communication platform for cars

    Khadraoui, D. ; Sukuvaara, T.
    Information Infrastructure Symposium, 2009. GIIS '09. Global

    DOI: 10.1109/GIIS.2009.5307088
    Publication Year: 2009 , Page(s): 1 - 7
    Cited by:  Papers (2)

    IEEE Conference Publications

    Rapidly changing weather conditions, especially in winter, have caused numerous disastrous traffic accidents in Northern Europe and in the Alpine region during recent years. Information about hazardous weather and road conditions is often potentially available but difficult or sometimes even impossible to deliver to drivers. This paper presents the international CARLINK (wireless platform for linking cars) project of the Celtic Cluster Programme Call 3 whose aim was to develop an intelligent wireless traffic service platform between cars supported with wireless transceivers along the roads. The project was conducted between 2006 and 2008. The platform consisted of a specific set of services, however not only these but variety of other services can be integrated to this kind of a system. Two of the major services were real-time local road weather service and incident warning service. The real-time local road weather service is a solution where up-to-date local weather related information is being collected from cruising vehicles and then further delivered to other vehicles in the area. Incident warning service operates in the same manner, but concentrates to the parameters related to traffic incidents or accidents, and (depending on seriousness of the incident) delivers a warning of such events to the vehicles in the traffic network without delay. The ultimate goal was to develop an intelligent communication platform for vehicles so that they can deliver their own observations of traffic and weather conditions to the platform core. Vehicular networking is nowadays a widely studied research field, and a large number of suggestions for vehicle-to-vehicle and vehicle-to-infrastructure communications have been presented. The focus is typically on bilateral communication between two vehicles or on broadcasting information from one vehicle or infrastructure to vehicles in the surrounding area. The CARLINK project developed an intelligent hybrid wireless traffic service pla- tform between cars supported with wireless base stations beside the road(s). Communication between the cars were arranged in an ad-hoc manner, supported with a wireless base station connection to the backbone network, whenever possible. The ultimate goal was to enhance traffic safety and smoothness, but also to generate completely new communication entity, allowing new types of applications, services and business opportunities. Not only the encountering cars and the infrastructure can broadcast data, but all the data can be delivered instantly over the communications network to all CARLINK-compliant vehicles. High impact and extreme weather generated challenges are increasing throughout the world, not least because of the climate change. CARLINK can truly contribute to meeting these challenges. The preliminary network simulations, communication tests and weather service prototypes have already shown that a new kind of wireless communication environment can be created and it is indeed capable of enhancing traffic safety. View full abstract»

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    A brief chronology of the origin and developments of wireless communication and supporting electronics

    Salazar-Palma, M. ; Sarkar, T.K. ; Sengupta, D.
    Applied Electromagnetics Conference (AEMC), 2009

    DOI: 10.1109/AEMC.2009.5430591
    Publication Year: 2009 , Page(s): 1 - 4

    IEEE Conference Publications

    This paper presents a brief chronology of the developments of wireless communication and supporting electronics up to 1912. The name wireless indicates communication without the use of wires. Various mechanisms have been used for such purpose: electrostatic coupling, conduction, magnetic induction and electromagnetic radiation. The first three, while indeed wireless were extremely limited in the distance they were capable of covering. The breakthrough in wireless communication was the successful use of the fourth one which allowed long distance transmission. The term radio was coined as a short name for electromagnetic radiation. Hence it is possible to speak of some wireless systems as not being radio systems. However, because all the other types of wireless mechanisms were abandoned, nowadays the word wireless is synonymous of radio. Also, because the earliest radio communications used Morse's code for transmitting information, it should be distinguished between this early form of radio communication and radio transmission of information in a readily understandable audio (and/or visual) form. Finally, it must be pointed out that when speaking about the history of wireless communication one can focus on three different types of discoveries: those that made it possible, those that made it realistic, and those that provided quality. Because of all these issues, it is not easy to objectively state who the Father of Radio was. View full abstract»

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