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TENCON '98. 1998 IEEE Region 10 International Conference on Global Connectivity in Energy, Computer, Communication and Control

17-19 Dec. 1998

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  • IEEE Region 10 International Conference on Global Connectivity in Energy, Computer, Communication and Control [front matter]

    Publication Year: 1998, Page(s):i - xvii
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    Freely Available from IEEE
  • Sir J.C. Bose revisited [MM wave research]

    Publication Year: 1998, Page(s):291 - 294 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The presentation of the work of Sir. J.C. Bose (1895, 1896, 1897, 1927) to the scientific community has resulted in a plethora of newspaper articles which claimed that perhaps the western scientific world of Lords Rayleigh and Kelvin which created Bose, attempted to deprive him of his Noble Prize for his work on electromagnetic phenomena which were carried out at the same time as that of Marconi. ... View full abstract»

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  • Millimeter waves and Gaussian beams in modern communication

    Publication Year: 1998, Page(s):627 - 629 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (173 KB)

    Summary form only given. Remarkable pioneering experimental work in millimeter-wave techniques was done by Sir Jagadis Chandra Bose in Calcutta in the 1890s. He developed and used many of the microwave and millimeter wave quasi-optical components that are in use today, including waveguides, horn antennas, dielectric lenses, prisms and wave polarizers, and made the first experimental demonstration ... View full abstract»

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  • Subcarrier multiplexed coherent lightwave systems using combined amplitude and frequency modulation scheme

    Publication Year: 1998, Page(s):356 - 359 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A subcarrier multiplexed (SCM) coherent lightwave system, where each subcarrier is modulated by two baseband signals in an AM-FM format, is proposed in this paper. The analysis as presented here shows that the proposed system has an efficiency that is twice that of the conventional analog SCM systems, while it maintains an overall performance at a similar level View full abstract»

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  • Making mobile IP more efficient

    Publication Year: 1998, Page(s):352 - 355 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    With the proliferation of compact laptops and notebook computers, and the spread of wireless network interfaces, the mobility of hosts connected to a network is becoming an important issue. Perkins (see IEEE Communications Magazine, p.84-99, 1997) proposed a mobile IP protocol, which relies on mobility support routers (MSR) and provides continuous network connectivity to the mobile hosts. These MS... View full abstract»

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  • Fault-tolerant routing in irregular MINs

    Publication Year: 1998, Page(s):638 - 641 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Efficient and simple routing algorithms have been developed for two irregular MINs-namely, MFDOT and QT. Static routing provides full access for MFDOT whereas minimal multiple paths to reach the destination are provided through dynamic routing in QT networks. Multiple paths of varying lengths are available to route the data to the destination in irregular MINs. The path length is just 2 for a favo... View full abstract»

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  • A practical method of estimation of train mobile radio coverage in the 320 MHz band

    Publication Year: 1998, Page(s):348 - 351 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Once the train leaves station, there is no communication between the running train and the station or controller. Hence, in case of failures or in emergencies in between stations immediate information cannot be given and a particular problem will escalate with valuable time lost. Hence, the introduction of a train radio communication system will not only improve the level of safety of Indian Railw... View full abstract»

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  • A new approach for security constrained economic emission dispatch in power systems

    Publication Year: 1998, Page(s):470 - 473 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    This paper presents the solution of security constrained economic emission dispatch in power systems using a stochastic search technique termed as SEEDSS. SEEDSS is a truly multi-objective technique that minimizes cost of generation, emission of hazardous gases and maximizes the security margin simultaneously. Various solutions provided by SEEDSS in a single run include those with minimum values o... View full abstract»

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  • Broadband via satellite

    Publication Year: 1998, Page(s):603 - 606 vol.2
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Asynchronous transfer mode is a widely accepted networking technology as a switching and multiplexing technique for broadband ISDN. Satellites provide services over a wide geographical area with very flexible bandwidth-on-demand capabilities and immunity to terrestrial disasters. ATM cells can be transported by using the existing digital transmission format over the satellite systems. This paper d... View full abstract»

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  • Artificial neural network based voltage controller for energy efficient induction motor drive

    Publication Year: 1998, Page(s):410 - 413 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    A loaded induction motor is generally obtained using a search technique which involves more time and the machine is subjected to many step changes of voltage which is undesirable. This paper presents two novel techniques for energy efficient operation of a voltage controlled induction motor drive using artificial neural networks (ANN). In the proposed methods, the time required to converge to the ... View full abstract»

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  • Numerical modeling of adsorption and scattering of EM energy radiated by cellular phones by human arms

    Publication Year: 1998, Page(s):261 - 264 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    The antenna radiation pattern and other characteristics are significantly altered by the presence of the human body. This interaction as well as the resultant deposition of microwave power in the body (specific absorption rates) are of particular interest for cellular phones and similar devices. For arbitrary shaped obstacles numerical methods prove to be very effective in analyzing such effects. ... View full abstract»

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  • The design and implementation of a high performance management information tree for a TMN platform

    Publication Year: 1998, Page(s):634 - 637 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    In telecommunication management network (TMN) systems, a managed object (MO) is an OSI abstract view of a logical or physical system resource to be managed. Instances of MO classes can be thought as logically containing other instances. The full set of MO instances available across a management interface are organized in a management information tree (MIT). Managed objects in an MIT may be accesse... View full abstract»

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  • Research and technology needs for human exploration and development of space

    Publication Year: 1998, Page(s):302 - 315 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (924 KB)

    The human exploration and development of space (HEDS) is one of four key NASA strategic enterprises aimed at opening the space frontier by exploring, using and enabling the development of space and expanding the human experience into the far reaches of space. Goals of HEDS are: to increase human knowledge of nature's processes using the space environment, exploring and settling the solar system, a... View full abstract»

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  • On the performance of interleaved convolutional codes and the comparison with BCH codes in different mobile channels

    Publication Year: 1998, Page(s):344 - 347 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The 3-state and 4-state Markov models are proposed as the long-bursting error possibility models of mobile channels. The coding and decoding of simple convolutional codes and the method of interleaving are combined. The error-correcting performance of interleaved convolutional codes in nine different channels with different modulation styles, vehicle speeds, and different information transmitting ... View full abstract»

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  • Comparison of performance of two configurations of ASVC for power transfer enhancement

    Publication Year: 1998, Page(s):466 - 469 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    Two types of ASVC, viz. multi-pulse ASVC and multi-PWM ASVC are considered for power transfer enhancement in a transmission corridor. Appropriate control systems for the two ASVCs are also proposed. Through detailed digital simulation, it is established that a significant increase in the power transfer capability is possible by the use of ASVC View full abstract»

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  • On-line instantaneous and delayed control of a fast tubular reactor

    Publication Year: 1998, Page(s):448 - 452 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    A control system for the tubular reactor-unit has been synthesized, which is a combination of feedforward, feedback and inferential control configurations. The reactor chosen is fast; transient period for a given disturbance varies between 20 and 100 sec, as found from numerical simulation. Therefore a fast on-line control scheme using heuristic approach has been used in which disturbances, manipu... View full abstract»

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  • An effective root based algorithm for power system topological observability

    Publication Year: 1998, Page(s):596 - 600 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    The paper presents a simple and direct “root based” algorithm with efficient data structure to determine the topological observability from the available measurement data set. The root based approach assigns measurements to the branches of the system graph and builds up a tree and determines the topological observability. If the system is unobservable from the available data set, it id... View full abstract»

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  • A new fixed-frequency zero-voltage switched low-cost single phase high quality rectifier circuits with minimum voltage stress across the switches

    Publication Year: 1998, Page(s):406 - 409 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    This paper presents a new family of circuits for single phase diode bridge rectifiers capable of drawing approximately sinusoidal current at unity power factor with high efficiency and minimum voltage stress across the switches. They can work as either boost or flyback converters. The circuits consist of a single-phase diode bridge rectifier, followed by a boost stage containing two switches-the m... View full abstract»

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  • Design of profibus compatible smart transmitter

    Publication Year: 1998, Page(s):365 - 368 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    The transmitter is a field mounted device used to sense and transmit process variable values over the cables to some remotely placed controller. Keeping an eye on the increased demand for local intelligence of the transmitter in the process industry, a smart transmitter (STx) is designed. This smart transmitter is expected to replace the conventional transmitter following the 4-20 mA current loop ... View full abstract»

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  • Fuzzy logic based speed controller for vector controlled cage induction motor drive

    Publication Year: 1998, Page(s):419 - 423 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The conventional speed controllers for vector controlled induction motor drive (VCIMD) suffer from the problem of stability, besides, these controllers show either steady state error (PD controller) or sluggish response (PI, PID) to the perturbation in reference setting or during load perturbation. This paper presents a fuzzy logic based speed controller and its design for vector controlled induct... View full abstract»

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  • A methodology for topological design of metropolitan area networks employing optical WDM

    Publication Year: 1998, Page(s):269 - 272 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    We present a cost-efficient topology design technique for optical metropolitan area networks (MANs) using WDM. The network employs a topology with a two level hierarchy. The lower level physical topology is a passive optical star interconnecting a number of electrical local area networks (LANs), while the higher level physical topology uses a wavelength routing switch (WRS) at the center for inter... View full abstract»

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  • Point to point communication at VHF in India

    Publication Year: 1998, Page(s):373 - 376 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    A high percentage of anomalous long distance TV signals at Delhi was observed on channel 2 (47-54 MHz) as compared to other channels of Band I (47-68 MHz) and Band III (174-230 MHz), when monitored between early morning and midnight during a solar cycle (1986-97). Various ionospheric modes of propagation have been identified for Band I. These propagation modes are sporadic-E layer during summer da... View full abstract»

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  • Design and analysis of modified Rotman type multiple beam forming lens

    Publication Year: 1998, Page(s):257 - 260 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    A modified approach to design Rotman (1963) type multiple beam forming lens has been proposed. The path length error at the wavefront has been calculated. The error obtained by the proposed approach and by the conventional approach has been compared. Two-dimensional electromagnetic field analysis of the lens obtained by the modified approach and by the conventional approach lens has been carried o... View full abstract»

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  • Optical control of beam steering planar phased array on ferrite substrate

    Publication Year: 1998, Page(s):249 - 252 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    A novel technique is presented to scan a beam of a phased antenna array through use of time delays instead of phase shifts provided by a nonlinear transmission line coupled to elements of the array. A coplanar transmission line loaded with varactor diodes when subjected to varied optical illumination offers bias dependent wide range time delays to the elements of the array. This technique has prov... View full abstract»

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  • An 8-element switched-beam array antenna for mobile satellite communications

    Publication Year: 1998, Page(s):241 - 244 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Conventional designs of phased array antennas for mobile satellite communications carry a high price tag. Hence antenna designers look for alternative low-cost solutions. In the paper, the design and development of a low-cost 8-element switched-beam array antenna is presented. The array elements are arranged in a circle on the side of a truncated cone whose inclination angle matches the satellite ... View full abstract»

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