By Topic

Fifth IEE Conference on Telecommunications 1995

26-29 Mar 1995

Filter Results

Displaying Results 1 - 25 of 71
  • A fiber in the loop cable TV system for broadcast and interactive services

    Publication Year: 1995, Page(s):110 - 114
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (508 KB)

    This paper describes a new optical CATV distribution system, which brings the fiber very near to the subscriber. In order to provide economic solutions for fiber to the building (FTTB) or fiber to the curb (FTTC) network topologies, the system uses cascaded optical amplifiers and passive optical splitters for the access network. It describes the system architecture and the major system elements of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • System controller for mobile audio visual terminal

    Publication Year: 1995, Page(s):115 - 119
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (244 KB)

    This paper contains the description of the system manager, one part of the demonstrator constructed during the third year of the MAVT project funded through the RACE program by the EEC. The system manager is the central control unit of the demonstrator with interfaces to the user interface, the DECT radio system, the video codec, and to the audio codec. Additional to the control functions, this un... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • BT screenphone services in the UK

    Publication Year: 1995, Page(s):155 - 159
    Cited by:  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (236 KB)

    The paper describes activities within BT leading towards the introduction of screenphones, as one of the methods of accessing multimedia services. BT is looking for a global solution reflecting the economies of scale that result coupled with the increase in growth of international telecommunications. The screenphone is based on the analogue display services interface (ADSI) specification and will ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High speed access for broadband multimedia services

    Publication Year: 1995, Page(s):120 - 124
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (292 KB)

    Providing access to the “information superhighway” for residential customers will be driven by the demand for new broadband multimedia services. Video-on-demand is considered as the most likely early application. The requirements imposed on the access network are considered in light of recent advances in digital video encoding. A critical review of both copper and fibre technologies ha... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Blind combiner for space diversity in cellular mobile systems

    Publication Year: 1995, Page(s):332 - 336
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (248 KB)

    This paper studies an implementation of space diversity reception. The diversity scheme analysed is the optimum combining. The combiner is optimum in the sense that it maximizes the signal-to-interference-plus-noise power ratio at the output of the antenna array. The novelty of this approach is that it uses a blind adaptive combiner. Therefore, no training sequences are used for updating the anten... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Implementation of a new teleworking communication platform to support services on agro-biotechnological applications

    Publication Year: 1995, Page(s):160 - 163
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (228 KB)

    A specialized teleworking environment is developed, by implementing a new teleworking communication platform based on distributed operational procedures according to agro-biotechnological needs. The implemented platform is capable of supporting agriculturists' diagnoses, by means of exchanged data in a multimedia environment between remote users, on cultivation diseases View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design outline for video on demand server

    Publication Year: 1995, Page(s):313 - 317
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (308 KB)

    Presents a design for a VOD server. The important thing in designing a service like VOD is the availability to a wide customer base and the real on demand response to their requests. Availability to marry simultaneous users and random access are the key issues here, since this feature will make the design suitable for other multimedia services, such as full interactive video systems and library se... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A study of methods for protecting an SCP from overload

    Publication Year: 1995, Page(s):125 - 129
    Cited by:  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (288 KB)

    This paper deals with overload control algorithms that should see to that throughput in an service control points (SCP) is kept high, also under severe overload conditions. A couple of basic overload control schemes like random admittance, call gapping and window flow control are examined. We stress that the algorithms should both be efficient and show fairness among a number of SSPs logically con... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Time envelope vocoder, a natural sounding speech coding algorithm operating at 1.6 kbits/sec

    Publication Year: 1995, Page(s):215 - 219
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (316 KB)

    The paper presents a linear prediction (LP) based vocoder in which speech waveforms are considered as having a `time envelope', the shape of which contains important perceptual information. By ensuring that the time envelope of the synthetic speech closely matches that of the original, natural sounding synthetic speech can be produced. The advantage over more traditional linear prediction vocoders... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Some years from now-what public service providers should provide

    Publication Year: 1995, Page(s):193 - 197
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (308 KB)

    This paper discusses some technical challenges which public telecommunication service providers will face in the near future. If they wish to keep their customers, they will need to provide services and functionality far beyond of what is being offered today. A brief description of today's situation is followed by a discussion of application layer issues to be addressed, including some lessons lea... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Study of optimum combining diversity for high bit rate indoor radio communication systems using sectored antennas

    Publication Year: 1995, Page(s):337 - 341
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (264 KB)

    This paper focusses on new applications of the sectored antenna system with optimum combining in order to accommodate the high data rate. It investigates the required Tx power for a TDMA system application and describes a reference signal generation. For example, the proposed configuration, with minimal ratio analysis requires only 15.9 dBm transmitter power in a 100 ft office (30 ns RMS delay) to... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interactive EDI-IT and commerce in the 21st century

    Publication Year: 1995, Page(s):164 - 169
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    It has taken 20 years for EDI to begin to become an accepted way of doing business. Change will not remain at this leisurely pace-the forces identified in the paper will lead to a explosive growth in the number of users, use and new technology. I-EDI will be a very significant factor in the development of information technology but not the only one. It is however, the natural successor to batch ED... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Overload control strategies in a multiprocessor system with distributed data

    Publication Year: 1995, Page(s):145 - 149
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    This paper addresses overload control issues for distributed control systems, i.e. multiprocessor systems, in telephone exchanges, signalling transfer points, service control points, home location registers, etc. Three different strategies for rejecting calls, due to severe overload conditions, are examined. The strategies differ in that they allow call rejection during different time epochs of th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Interactive video services

    Publication Year: 1995, Page(s):323 - 326
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (224 KB)

    The paper is to provides a summary technical description of the architecture and the system components of Scientific-Atlanta's digital interactive video service networks (DIVSN) solution. In addition, it contains references to other Scientific-Atlanta documents which contain more detailed information about individual system elements View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Information services and group activities in a national information infrastructure

    Publication Year: 1995, Page(s):302 - 307
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (392 KB)

    Collaborative working and groupware has three traditional families of services: dialogue support (e.g. bulletin boards and e-mail); shared editors; and information search and retrieval. However, these are augmented with the following services for enhanced collaborative information networking: information trading and procurement services which includes free market trading environments, information ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Discretised fluid-flow analysis for ATM connection admission control

    Publication Year: 1995, Page(s):135 - 139
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (192 KB)

    An important outstanding problem in ATM networking is the design of practical connection admission control algorithms which allow efficient use of bandwidth resources. Turning away custom should be a very rare event, otherwise competitors are likely to benefit. Turning away custom which could in fact be accepted is a serious mistake! This paper summarises a new fluid-flow analysis method which can... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multi-service management in a multi-provider environment

    Publication Year: 1995, Page(s):292 - 296
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    As the spread of digital networks makes access to data communications globally available, the interest of communication service providers is switching away from the provision of these bearer networks and towards the provision of the value added services that will operate over them. At the same time the liberalisation of telecommunication markets is precipitating a dramatic change in the profile of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Forward error control for future trans-oceanic optical systems

    Publication Year: 1995, Page(s):78 - 82
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (316 KB)

    This paper is concerned with an assessment of a range of (forward error control) FEC options appropriate to submarine transmission systems. Both established and novel coding arrangements are considered and promising avenues for further investigation are identified. We first briefly review the currently proposed RS tributary coding arrangement. We then present alternative coding schemes which offer... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance analysis of Osman Nuri Ucan (ONU)-receiver for trellis coded M-QAM schemes in partial response channels

    Publication Year: 1995, Page(s):88 - 91
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (144 KB)

    In this paper, for the first time, trellis coded M-QAM modulated signals are analysed in partial response channels.The named Osman Nuri Ucan (ONU)-receiver is composed of an k-parallel unit memory decoder, k/k+1 rated systematic encoder, cascaded with PRS channel model. The combined trellis structure of the ONU-receiver reduces the state number from 2k2ν2k+1 res... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Non-linear prototype waveform interpolation for voiced speech encoding

    Publication Year: 1995, Page(s):220 - 224
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (248 KB)

    Prototype waveform interpolation (PWI) is a practical and promising coding technique applicable to voiced speech. The waveform and duration of only one pitch cycle (the prototype) per frame is extracted and coded using LPC techniques. Segments of missing speech between the prototypes are reconstructed at the receiver by interpolation from the decoded prototype waveforms. Although waveform reconstr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Impact of mobility an a pan-European intelligent network a view from Eurescom project P230

    Publication Year: 1995, Page(s):248 - 252
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (284 KB)

    The number of services based on intelligent networks (IN) is increasing rapidly in the national markets of most public network operators (PNO). As intelligent network services continue to evolve and prove their value on a national level, and as customer bases expand internationally, there is a natural demand to extend these telecommunications capabilities globally. The increasing complexity makes ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Proceedings 5th IEE Conference on Telecommunications (Conf. Publ. No.404)

    Publication Year: 1995
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (56 KB)

    The following topics were dealt with: transmission network advances; corporate networks; radio access; channel coding and modulation; video transmission for multimedia; overload control; new applications; radio system aspects; telecommunications business; speech coding and quality; mobile and personal communications; ATM aspects; regulation; video on demand; radio transmission; provision and manag... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Scarce-state-transition error-trellis decoding of binary block codes

    Publication Year: 1995, Page(s):97 - 99
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (208 KB)

    A novel scarce-state-transition (SST) type Viterbi decoding system of block codes for discrete memoryless channels is proposed. In this work, we show that the SST-type Viterbi decoding system of convolutional codes devised by Kubota et al. (1986) can also be used to decode block codes. Like the SST-type Viterbi decoding of convolutional codes, the proposed system is well suited for CMOS LSI/VLSI i... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • How can Europe reap the benefits of advanced communications?

    Publication Year: 1995, Page(s):198 - 202
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (280 KB)

    This paper is based on work done in two collaborative projects in the RACE programme: R2091 URSA and T1023 Metier. It is widely recognised that there is considerable potential for growth in the demand for advanced communications (AC) services in Europe, provided that the price is right and that the right applications are developed and marketed. The paper identifies the right applications, the righ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Some technical aspects of regulation

    Publication Year: 1995, Page(s):278 - 281
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (232 KB)

    An approach to obtaining increased telecommunication efficiency is to privatise the monopolistic basic service provider. To help ensure the privatised operator strives for efficiency, competition is also introduced. The resultant competitive situation can however be unstable and some form of regulation is necessary. A pseudo-independent regulator can be appointed with the task of interpreting the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.