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Communications, Radar and Signal Processing, IEE Proceedings F

Issue 1 • Date February 1982

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Displaying Results 1 - 12 of 12
  • Editorial

    Publication Year: 1982
    IEEE is not the copyright holder of this material | PDF file iconPDF (148 KB)
    Freely Available from IEEE
  • Fully integrated radio paging receiver

    Publication Year: 1982, Page(s):2 - 6
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (756 KB)

    A review is made of radio paging receiver requirements and a new receiver architecture is described which uses a direct conversion (zero-IF) principle. This circuit is shown to have advantages over the conventional superheterodyne with high-frequency IF and in particular is shown to be suitable for monolithic realisation. A single chip which performs as a complete high-sensitivity VHF receiver is ... View full abstract»

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  • Departure of repeater housing crosstalk from the Gaussian amplitude distribution

    Publication Year: 1982
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1278 KB)

    For PCM digital transmission systems, used on symmetrical pair cables, the performance is usually limited by near-end crosstalk (NEXT), introduced into the disturbed pair by crosstalk paths in the first few hundred metres of the main cable. There are, however, also NEXT crosstalk paths inside the repeater housing and in the (electrically short) tail cables. Such crosstalk is referred to as `repeat... View full abstract»

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  • Performance of slotted ALOHA satellite channels with finite buffer

    Publication Year: 1982, Page(s):19 - 24
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (571 KB)

    The behaviour of the slotted ALOHA satellite channel with a finite buffer at each of the user terminals is studied. Approximate relationships between the queuing delay, overflow probabilities and buffer size are derived as functions of the system input parameters (i.e. the number of users, the traffic intensity, the transmission and the retransmission probabilities) for two cases found in the lite... View full abstract»

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  • Reliability considerations in long-haul fibre-optic transmission systems

    Publication Year: 1982, Page(s):25 - 27
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (387 KB)

    The paper considers various aspects of obtaining the design availability requirements for long-haul toll fibre-optic transmission systems in Canada, i.e. an availability of 99.98% for a reference length of 6400 km. The paper looks into unavailabilities of various subsystems (e.g. fibre splices, fibre connectors, protection switches etc.) and estimates the mean time between failure (MTBF) requireme... View full abstract»

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  • Adaptive transform coding of video signals

    Publication Year: 1982, Page(s):28 - 40
    Cited by:  Papers (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1917 KB)

    In the paper, five schemes for the adaptive transform coding of video signals are presented. Adaptation is based on adaptive quantisation and adaptive bit selection. A Max quantiser having a Laplacian density distribution is used to achieve adaptive quantisation, whereas classification according to the activity within the transform block and based on the human visual characteristics are used for a... View full abstract»

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  • Effect of Fresnel ripples on sidelobe suppression in low time-bandwidth product linear FM pulse compression

    Publication Year: 1982, Page(s):41 - 44
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (457 KB)

    The paper discusses the effects of Fresnel ripples on the suppression of peak time sidelobes in low time-bandwidth (TB) product linear-FM pulse compression systems employing internally Hamming weighted compression filters. Two methods for the reduction of these effects are investigated. The first, amplitude tapering of the rectangular FM pulse, yields significantly diminished sidelobes for TB prod... View full abstract»

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  • Inverse methods for branched ducts and transmission lines

    Publication Year: 1982, Page(s):45 - 51
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (994 KB)

    Whereas time-domain approaches to one-dimensional inverse scattering can be said to be well understood, many conceptual difficulties remain for more than one dimension, except in situations where elementary echo-location ideas apply. Algorithms appropriate for inverse problems involving branched ducts and transmission lines are presented here; such problems can be thought of as being intermediate ... View full abstract»

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  • Evaluation of sidelobe-canceller performance

    Publication Year: 1982, Page(s):52 - 58
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (754 KB)

    A sidelobe canceller (SLC) can be efficiently employed to reduce the effects of jammers on a radar system. The paper deals with the evaluation of SLC performance, taking into account the estimation errors of the weighting coefficients of the auxiliary antennas. An explicit formula for the cancellation is given as a function of the ratio of the closed-loop bandwidth of the adaptive circuits and the... View full abstract»

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  • Fast cosine transform implementation for television signals

    Publication Year: 1982, Page(s):59 - 68
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1046 KB)

    An algorithm is described for realisation of the discrete cosine transform. The algorithm has been designed to allow implementation in hardware for 625-line pictures. It employs factorisation of the transform matrix into sparse matrices, some of which are sparse factors of a Hadamard matrix. Further attention is given to the sharing of hardware components so as to reduce circuit complexity. View full abstract»

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  • Correspondence: Performance of recursive moving target indication (MTI) filters with finite number of samples

    Publication Year: 1982, Page(s):68 - 69
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (240 KB)

    The dynamic frequency response of a recursive MTI filter is usually calculated by simulating the in-phase and quadrature channels and the improvement factor determined by using numerical integration. An equivalent nonrecursive filter is described which simplifies calculation for recursive filter characteristics, with and without initialisation. View full abstract»

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  • Conference report. Second international conference on antennas and propagation

    Publication Year: 1982, Page(s):69 - 71
    IEEE is not the copyright holder of this material | PDF file iconPDF (487 KB)
    Freely Available from IEEE

Aims & Scope

The latest version of this title is Radar, Sonar & Navigation, IET.

Full Aims & Scope