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IRE Transactions on Communications Systems

Issue 1 • Date May 1959

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Displaying Results 1 - 13 of 13
  • [Front cover and table of contents]

    Publication Year: 1959, Page(s): 0
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  • Quo vadis?

    Publication Year: 1959, Page(s):1 - 2
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  • Performance of Digital Phase-Modulation Communication Systems

    Publication Year: 1959, Page(s):3 - 6
    Cited by:  Papers (63)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (390 KB)

    This paper analyzes the performance of digital phase modulation systems in Gaussian noise and determines required signal-to-noise ratio as a function of the number of discrete phases and the desired error rate, under conditions of no fading. Both coherent detection with a locally-derived reference carrier and phase comparison detection are considered. The calculations show that multiphase modulati... View full abstract»

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  • Radio Channel Selection for Interference-Free Operation

    Publication Year: 1959, Page(s):7 - 13
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (878 KB)

    A procedure for the selection of mutually-interference-free (MIF) radio communication channels has been devised. Cross-modulation interference and various forms of intermodulation products were considered, as well as other interferences representative of real situations. The channel-selection process consists of the assignment of a priority to all previously-accepted channels over all later trial ... View full abstract»

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  • Performance Analysis of a Data Link System

    Publication Year: 1959, Page(s):14 - 24
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1748 KB)

    Because of the increased traffic densities and aircraft speeds contemplated in the near future, the present air-trafficcontrol (ATC) system must be improved by a far more efficient and partially automatic system. To prevent further burden on alreadyburdened voice-communication facilities and frequencies, there is a requirement for more efficient means of transferring information between air and gr... View full abstract»

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  • Doppler Phenomena in Space Communications

    Publication Year: 1959, Page(s):25 - 30
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (538 KB)

    The Doppler phenomenon is studied under spaceflight conditions. These conditions impose restrictions, and introduce influences which otherwise are of negligible importance. Examples of undesired effects of the Doppler shift in space communications and of applications for useful purposes are given. General relations are derived for the Doppler shift which permit consideration of the space-flight co... View full abstract»

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  • Performance Equations for a "Stationary" Passive Satellite Relay (22,000-Mile Altitude) for Communication

    Publication Year: 1959, Page(s):31 - 37
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    Performance equations are given for the use of a single fixed satellite used as a passive bounce point for almost hemispherical coverage of the earth for communication purposes. The antenna size and transmitter power per cps of bandwidth for desired signal-to-noise ratio (SNR) at RF are given for various types of passively-reflecting satellites. Possible limitations due to terrestrial and extrater... View full abstract»

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  • An Analog Computer for Finding an Optimum Route Through a Communication Network

    Publication Year: 1959, Page(s):37 - 42
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (541 KB)

    This paper describes an analog computer capable of solving a variety of communication network problems; in particular, the problem of finding an optimum route through an arbitrary network. For example, in routing a call through a communications network, it may be desirable to determine that path (or paths) containing the smallest number of switching centers-or again, if, in some predetermined sens... View full abstract»

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  • Prelimiting Bandpass Filtering on Fading Radio Circuits

    Publication Year: 1959, Page(s):42 - 46
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (601 KB)

    On channels subject to multipath propagation, the prelimiting bandpass filtering technique is shown to be a factor of great importance in determining the over-all performance. Minimum-loss, fiat-topped filters create serious transient effects which add greatly to the error rate in data transmission. Because of adjacent channel requirements, an over-all Gaussian response is not applicable. A practi... View full abstract»

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  • Radio Link Communication Reliability: A Three-Part Design Problem

    Publication Year: 1959, Page(s):47 - 52
    Cited by:  Papers (53)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2313 KB)

    The degree of reliability required for equipment used in a global communications system must be designed into the equipment from the inception of the original design specification and implemented through all stages of development, procurement, production, and testing. The design of a system based on three basic concepts, redundancy, rugged circuit design, and complete monitoring and alarm faciliti... View full abstract»

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  • Analysis of SSB Power Amplifiers

    Publication Year: 1959, Page(s):53 - 57
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (525 KB)

    It is well known that one of the critical items in a single sideband (SSB) transmitter is the power amplifier with which are associated the basic problems of distortion, output power and plate dissipation. Tubes are available which may be used either as quasi-linear RF amplifiers operated class AB or B or as gridmodulated amplifiers operated class C. In the class-AB case, the SSB signal is introdu... View full abstract»

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  • Two-Dimensional Predictive Redundancy in a Television Display

    Publication Year: 1959, Page(s):57 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (339 KB)

    The two-dimensional predictive redundancy of a television picture element is calculated as a function of the preceding point correlation for both interlaced and noninterlaced scanning. The resulting curves level off rapidly when the number of previous points taken into account is increased. This seems to indicate that while appreciable improvement would accrue if preceding point redundancy were us... View full abstract»

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  • Contributors and back cover

    Publication Year: 1959, Page(s): 0
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Aims & Scope

This Transactions ceased publication in 1962. The current retitled publication is  IEEE Transactions on Communications.

Full Aims & Scope