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WCC 2000 - ICCT 2000. 2000 International Conference on Communication Technology Proceedings (Cat. No.00EX420)

21-25 Aug. 2000

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  • 2000 International Conference on Communication Technology Proceedings [front matter]

    Publication Year: 2000, Page(s):0_1 - 27
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  • Practical traffic grooming scheme for single-hub SONET/WDM rings

    Publication Year: 2000, Page(s):1193 - 1200 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (730 KB)

    In SONET/WDM networks, one fiber supports multiple wavelengths and each wavelength supports several low rate tributary streams. "Traffic grooming" then is defined as properly using a SONET add/drop multiplexer (ADM) to electronically multiplex and demultiplex the required tributary traffic patterns with minimal resource cost (wavelengths and ADMs). This paper studies the traffic grooming problem i... View full abstract»

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  • Author index

    Publication Year: 2000, Page(s):1 - 8
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    Freely Available from IEEE
  • The implementation of Viterbi decoder on TMS320C6201 DSP in W-CDMA system

    Publication Year: 2000, Page(s):1693 - 1696 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    This paper describes the design and implementation of a soft-decision Viterbi decoder on TMS320C6201 DSP developed by Texas Instruments (TI) in 1998. With an incomparable operating speed, which is 200 MHz (5 ns cycle time), the TMS320C6201 DSP can achieve the performance of up to 1600 million instructions per second (MIPS) and consequently has gained more and more popularity in many applications. ... View full abstract»

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  • Further results on the equivalence between SOVA and max-log-MAP decodings

    Publication Year: 2000, Page(s):1689 - 1692 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    Turbo codes are preferred for high rate data services in the third generation mobile communication system IMT-2000. Thus low decoding delay and low complexity interactive decoding is of paramount importance. The modified soft output Viterbi algorithm (SOVA) and the max-log-maximum a posterioi (MAP) algorithm are such decoding techniques. The equivalence of modified SOVA and max-log-MAP decodings h... View full abstract»

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  • QoS routing in self-organized network

    Publication Year: 2000, Page(s):1304 - 1309 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    A self-organized network is a multi-hop temporary autonomous system of mobile nodes with wireless transmitters and receivers but without a preestablished network infrastructure. In such an environment, it may be necessary for one mobile node, in order to communicate with another node, to depend on a chain of intermediate nodes to forward packets, due to the limited propagation range of each mobile... View full abstract»

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  • WebMUX protocol state analysis with CPN modelling

    Publication Year: 2000, Page(s):1421 - 1430 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (796 KB)

    The WebMUX protocol is an experimental multiplexing protocol. It is a transport sub-layer built on top of existing Internet transport protocols in HTTP-NG (hypertext transport protocol-next generation), which aims to enhance the performance of HTTP and overcome some intrinsic limitations. After describing the mechanisms of the WebMUX protocol, we define the service primitives of WebMUX. Based on t... View full abstract»

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  • A new implementation algorithm for multiplexing and channel coding scheme in W-CDMA

    Publication Year: 2000, Page(s):1685 - 1688 vol.2
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    Multiplexing and channel coding is of great importance in W-CDMA. It provides a data passageway from MAC (medium access control) layer to physical layer to ensure the efficient and reliable transmission of data streams. The channel coding scheme is a combination of error detection, error collecting and rate matching, interleaving and transport channel mapping on to/splitting from physical channels... View full abstract»

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  • Routing protocols overview and design issues for self-organized network

    Publication Year: 2000, Page(s):1298 - 1303 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    A self-organized network is a kind of wireless network that can be deployed instantly and provide easy network communication without the support of pre-established network infrastructures, such as base stations. This network architecture brings promise of much better mobility and communication capacity. Various routing protocols have been presented. This paper gives a detailed study of whether eac... View full abstract»

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  • Performance, improvement and perspective application of an all-optical shift register

    Publication Year: 2000, Page(s):1554 - 1556 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    An all-optical shift register based on self electro-optic effect devices is introduced. The switching behavior, system performance and some possible improvements are presented, Calculations show the system bit rate could be up to 790 Mbit/s with 1 mW clock power. An improved scheme is discussed, which can provide 2 Gbit/s throughput for 1 mW clock power. Finally we present an application of this a... View full abstract»

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  • An efficient delay-constrained multicast routing algorithm

    Publication Year: 2000, Page(s):1244 - 1247 vol.2
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    We propose a simple multicast routing heuristic for delay-sensitive applications. The running complexity of it is O(m|V), where m is the number of group members and |V is the number of nodes in the network. Experimental results through simulations show that the DCMA achieves good performance View full abstract»

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  • Implement of system control part in a multimedia communication terminal

    Publication Year: 2000, Page(s):1372 - 1375 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    This paper presents how to realize the system control part of a multimedia communication terminal on a LAN. The system control part is the core of the terminal. The design partly refers to ITU-T H.323. System control is composed of call control and H.245 control. Call control signals are used for call establishment, disconnect and other call control functions. H.225.0 defines the syntax of call-si... View full abstract»

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  • Semantic expression in management information exchange

    Publication Year: 2000, Page(s):1416 - 1420 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    This paper presents semantic expression of management information and an information exchange model. They are particularly suitable for management integration in a multi-vendor environment and adaptation to new technologies and services in network management View full abstract»

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  • Research of bound multicast tree

    Publication Year: 2000, Page(s):1453 - 1456 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    In multicast communication, messages are sent to multiple destinations that belong to the same multicast group. One of the core issues in providing such mechanisms is routing. Typical approaches of multicast routing require the transmission of packets along the branches of a tree spanning the source and destination nodes. In order to improve multicast routing quality under interactive real-time ap... View full abstract»

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  • A statistical simulation model for correlated Nakagami fading channels

    Publication Year: 2000, Page(s):1680 - 1684 vol.2
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Efficient simulation models for correlated Nakagami-m fading channels are required for the development, performance evaluation and validation of diversity combining systems in general fading channels. We propose a theoretical explanation of the Nakagami-m distribution, as a natural extension of the Rayleigh fading model. In this model, a Nakagami random variable is viewed as the norm of an m-dimen... View full abstract»

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  • Key issues of resource management in distributed multimedia computer systems

    Publication Year: 2000, Page(s):1629 - 1632 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    The guarantee of quality of service (QoS) of multimedia applications is a kernel issue in the resource management of distributed multimedia computer systems. Some key issues for resource management in multimedia transmission are researched in this paper as follows: (1) the relation between QoS and resource management, (2) the algorithm for scheduling distributed multimedia tasks, (3) the paradigm ... View full abstract»

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  • A mobile agent based system for distributed database access on the Internet

    Publication Year: 2000, Page(s):1587 - 1590 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    This paper presents a mobile agent based system for accessing distributed databases on the Internet. This system is developed on 100% pure Java code. It adopts a master-worker work function and a three-tier (3TC) commit protocol for distributed transactions. The 3TC protocol can significantly reduce the bottleneck of communication View full abstract»

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  • Some characteristics of a multi-cluster wireless multi-hop network

    Publication Year: 2000, Page(s):1294 - 1297 vol.2
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    This paper considers a multi-cluster wireless multi-hop network where terminals and base stations coexist. This paper considers three-kinds of cluster generating schemes. This paper assumes that a cluster consists of a base station and terminals. This paper evaluates the probability that the clusters include every terminal and members in each cluster are connected View full abstract»

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  • Generalized attenuation coefficients and their application in counter-pumped fiber Raman amplifier simulation

    Publication Year: 2000, Page(s):1550 - 1553 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    With the introduction of a pair of generalized attenuation coefficients, a novel algorithm for counter-pumped fiber Raman amplifier (FRA) is derived for unequal signal and pump loss coefficients, leading to a significant increase in the iterative step size under saturated amplification. The simulation results agree well with experimental data. This method is also effective in the numerical simulat... View full abstract»

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  • Multicast distribution for multimedia on demand services

    Publication Year: 2000, Page(s):1236 - 1243 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Recent advances in information and communication technologies have made multimedia on demand services technically and economically feasible. An important aspect of such systems is the resource sharing technique, which allows the simultaneous service of a large number of users with considerable savings in terms of network bandwidth and server resources. In this paper, we report the results of a stu... View full abstract»

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  • Time-critical multimedia components and cell delay jitter

    Publication Year: 2000, Page(s):1364 - 1371 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    The delivery of multimedia services easily faces the problem of guaranteeing the required delay performance for delay sensitive service components. The problem is especially severe with isochronous service components, such as voice and video. The transport network should guarantee, e.g., required bit rate, end-to-end delay, delay variation and error ratio performance, for each tributary of a multi... View full abstract»

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  • Toward realizing IS-95 in software radio

    Publication Year: 2000, Page(s):1106 - 1111 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Software radio techniques are becoming more and more attractive because of the recent development of the computer central processor unit (CPU) and the analog-to-digital and digital-to-analog (A/D/A) technique. For mobile communication systems, the advantages of this novel system architecture is obvious: when the IS-95 base station is implemented in software, the system will enjoy a more flexible f... View full abstract»

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  • Study on data replacement algorithm in continuous media server with hierarchical storage

    Publication Year: 2000, Page(s):1387 - 1394 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    In this paper, ELFU (extended least frequently used algorithm), a new data replacement algorithm based on the characteristics of continuous media services, is presented. This algorithm reduces the video page miss ratio by conducting an active replacement policy. First we give a thorough study of the characteristics of continuous media services. Second we expound on the storage model of a continuou... View full abstract»

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  • Differentiated service fast-TCP policy for flow control and resource management

    Publication Year: 2000, Page(s):1645 - 1652 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    This paper presents an enhancement of the flow control mechanism of traditional TCP, which is called a differentiated service fast-TCP policy. The basic idea of this policy is delaying ACK of differentiated services from the destination towards the source to different extents. It can not only shape the output rate of the sources and palliate congestion in the routers, but can also manage the resou... View full abstract»

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  • Clearinghouse activity for geodata obtaining in the World Wide Web

    Publication Year: 2000, Page(s):1412 - 1415 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Digital geodata are precious resources both for a nation and for a person. With the rapid development of networks such as the Information Highway and WWW, widely distributed geodata stimulate users' needs. There is now an urgent appeal for the publication of the geodata. Because of the abundant information on the Internet, geodata may be difficult to discover and to use. In this article, we introd... View full abstract»

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