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IEEE Transactions on Communications

Issue 9  Part 1 • September 1980

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Displaying Results 1 - 25 of 45
  • [Front cover and table of contents]

    Publication Year: 1980, Page(s): 0
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    Freely Available from IEEE
  • Preface: Military communications - An overview of the special issue

    Publication Year: 1980, Page(s):1441 - 1444
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  • DSCS III - Becoming an Operational System

    Publication Year: 1980, Page(s):1499 - 1504
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (593 KB)

    This paper addresses the progress of the Defense Satellite Communications System, Phase III (DSCS III), related developmental efforts directed toward facilitating operational employment of the new generation spacecraft, and an overview is provided illustrating how some of the innovations of the DSCS III will be used in the operational environment. The major features of the DSCS III are reviewed an... View full abstract»

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  • VHF Radio System Performance Model for Predicting Communications Operational Ranges in Irregular Terrain

    Publication Year: 1980, Page(s):1637 - 1644
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (828 KB)

    This paper describes a VHF communication system performance model which can predict the probability of successful communications (ps) in irregular terrain for both analog and digital systems. The Longley-Rice model is used to predict the propagation effects. A new noise model, based upon information in CCIR Report 258, is used to help estimate predetection signal-to-noise ratios (R... View full abstract»

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  • Signal-to-Noise Ratio of the nth Law Amplifier for Non-Gaussian Noise

    Publication Year: 1980, Page(s):1747 - 1753
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (493 KB)

    The effects of thenth law amplifier on signal-to-noise ratio has not been represented as a function of the input signal-to-noise ratio when the input of the nonlinear device contains nonGaussian noise. In this paper, we analyze these effects and determine the improvement factor represented by the ratio of the output SNR to the input SNR. The results are illustrated by the calculation of... View full abstract»

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  • Does a Larger Intersymbol Interference Result in a Higher Probability of Error?

    Publication Year: 1980, Page(s):1771 - 1773
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (290 KB)

    In this correspondence, we investigate an intuitive conjecture on data communication studies that a larger intersymbol interference (ISI) would result in a higher error probability. It is proved that if: 1) the eye is open, and 2) the additive noise has a symmetric probability density function and its complementary distribution function is concave upward (i.e., convexcup) on the positiv... View full abstract»

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  • [Back cover]

    Publication Year: 1980, Page(s): 0
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    Freely Available from IEEE
  • A Total AUTODIN System Architecture

    Publication Year: 1980, Page(s):1467 - 1471
    Cited by:  Papers (1)  |  Patents (83)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    This paper concerns data communications in the U.S Department of Defense. It includes a historical perspective on DoD common-user data systems: AUTODIN I, ARPANET, and AUTODIN II. It treats data communications on an end-to-end basis, including automation of communications center functions by the user. The Integrated AUTODIN System Architecture (IASA) project was defined by DoD to provide a total d... View full abstract»

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  • Future Communications Concepts in Support of U.S. Army Command and Control

    Publication Year: 1980, Page(s):1540 - 1550
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    This paper will describe the proposed communications concepts for the United States Army tactical field forces in the time frame 1990 and beyond. First, there will be a review of previous communications architectures. The review of past architectures provides the contrasts associated with the evolutions of warfare. The paper, then, will highlight technological advances that can provide those capab... View full abstract»

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  • An Error Recovery Technique for a Satellite Channel Assignment System with Distributed Control

    Publication Year: 1980, Page(s):1766 - 1771
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A distributed control system for a set of earth stations sharing satellite communication channels is studied. The stations communicate by messages which may be corrupted by errors. A sufficient set of message types are defined to allow stations to enter and leave the system, to arbitrate for communication channels, and to recover from error situations. The errorprocesses assumed are of a transient... View full abstract»

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  • Harmonic Distortion of a PLL FM Demodulator for Periodic Signals

    Publication Year: 1980, Page(s):1753 - 1762
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    This paper presents a method which evaluates the harmonic distortion of the phase-locked FM demodulator in the absence of noise. An approach of the harmonic-balance method with the digital Fourier transform is described, and then it is applied to the phase-locked loop in order to calculate the steady-state phase error and harmonic distortion. View full abstract»

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  • Dynamic Performance of a Frequency Controller

    Publication Year: 1980, Page(s):1762 - 1766
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    A simple first-order digital frequency controller, based on a voltage-controlled oscillator, is both described and analyzed. Experimental results of the dynamic response of the controller confirm the theoretical predictions. In particular, it is shown that by appropriate adjustment of the loop gain, synchronism may be achieved in one sample period. Some applications are suggested. View full abstract»

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  • The Role of Blue/Green Laser Systems in Strategic Submarine Communications

    Publication Year: 1980, Page(s):1602 - 1607
    Cited by:  Papers (19)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    A continuing interest exists in the Department of Defense to stress technology wherever it may result in the improvement of a military system. One important area where this is currently occurring is in laser communications. Specifically, an extensive effort is underway to exploit the "Blue/Green" transmission window in the ocean and develop a strategic laser communication system operating between ... View full abstract»

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  • An Integrated Distributed Control Structure for Global Communications

    Publication Year: 1980, Page(s):1505 - 1515
    Cited by:  Papers (5)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    The worldwide communications resources of the Defense Communications System (DCS) are controlled by a multilevel control complex, with distribution of control functions among many control facilities. The control structure is going through substantial changes, driven by considerations of reliability, survivability, crisis management capability, and of course, cost. This paper introduces the control... View full abstract»

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  • Conceptual Approaches to Switching in Future Military Networks

    Publication Year: 1980, Page(s):1491 - 1498
    Cited by:  Papers (2)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    This paper presents conceptual approaches to the synthesis of switching functions in future military networks. The special requirements of military communications are shown to favor the implementation of integrated networks which provide all services (voice, data, imagery) within a single unified network structure. Transparent and transactional methods are defined as contrasting approaches to the ... View full abstract»

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  • Prediction of Attenuation by Rain

    Publication Year: 1980, Page(s):1717 - 1733
    Cited by:  Papers (262)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1712 KB)

    A new model is presented for the prediction of attenuation by rain on either terrestrial or slant earth-to-space propagation paths. The model was developed using geophysical observations of the statistics of point rain rate, of the horizontal structure of rainfall, and of the vertical temperature structure of the atmosphere. The model was tested by comparison with attenuation distribution observat... View full abstract»

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  • On Gaussian Error Probabilities in Optical Receivers

    Publication Year: 1980, Page(s):1742 - 1747
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    The output voltage of an optical receiver is statistically a mixture random variable, composed of the sum of a discrete count variable and a continuous Gaussian thermal noise variable. Based on some computer analyses, it is shown here that threshold crossing probabilities using the mixture density can be reliably approximated by integrations of an equivalent continuous Gaussian density. The condit... View full abstract»

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  • Some Aspects of the Fast Karhunen-Loeve Transform

    Publication Year: 1980, Page(s):1773 - 1776
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    A few important properties of the fast Karhunen-Loeve transform (FKLT) proposed by Jain [3] are discussed. The purpose here is to emphasize the role of the boundary conditions upon which the entire theory is based. The effects of the zero boundary conditions are also discussed. It is argued that the transform is not as efficient as it might appear when used in bit rate reduction. View full abstract»

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  • NATO Communications in Transition

    Publication Year: 1980, Page(s):1524 - 1539
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1784 KB)

    In 1970, the Defense Ministers of the Alliance approved an ambitious program to develop a modern, NATO-wide commonuser communications system called the NATO Integrated Communications System (NICS) and created a NICS Management Agency, NICSMA, with the responsibility of planning, engineering, and implementing the system. The aim of the NICS is to provide rapid, secure, survivable, flexible, and rel... View full abstract»

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  • IFF System Concept Based on Time Synchronization

    Publication Year: 1980, Page(s):1630 - 1637
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    Identification of friend or foe (IFF) in the tactical theater is a complex technical and operational problem with extremely important implications to the nation's success in waging war. A practical, inexpensive IFF system which can reliably identify friends in a hostile ECM environment is desperately needed by the United States and NATO. This paper presents an IFF system concept which utilizes exi... View full abstract»

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  • The Application of Charge-Coupled Devices to Spread-Spectrum Systems

    Publication Year: 1980, Page(s):1693 - 1705
    Cited by:  Papers (10)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1120 KB)

    The application of charge-coupled device (CCD) technology to spread-spectrum systems is presented. In particular, CCD pseudonoise matched filters and recursive integrators are described functionally and as semiconductor devices. Then, applications to various modulation formats are considered in terms of integrated circuit architecture. Acquisition and synchronization for directsequence and hybrid ... View full abstract»

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  • An Analysis of Meteor Burst Communications for Military Applications

    Publication Year: 1980, Page(s):1591 - 1601
    Cited by:  Papers (54)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1128 KB)

    This paper presents a methodology for the design and analysis of meteor burst communication systems, with special emphasis on system characteristics of importance to military applications (intercept resistance, jam resistance, nuclear survivability, and encryption considerations). Using stochastic models for the meteor burst process, expressions for the average throughput and average message waiti... View full abstract»

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  • Cost Implications for Survivability of Terrestrial Networks Under Malicious Failure

    Publication Year: 1980, Page(s):1668 - 1674
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    Protection against malicious failure is a very important issue in many network applications. While no general theory is easily developed, the following general statement emerges from any analysis: the combined link cost (topology) to guard against such failure is much higher than to protect against random failure. In this paper we first define precisely the concept of malicious failure and immedia... View full abstract»

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  • Voice Communication in Integrated Digital Voice and Data Networks

    Publication Year: 1980, Page(s):1478 - 1490
    Cited by:  Papers (35)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1400 KB)

    Voice communication networks have traditionally been designed to provide either analog signal paths or fixed-rate synchronous digital connections between individual subscribers. These designs were aimed at accommodating the "streamlike" character of speech, which has traditionally been considered to flow from source to destination at a more or less constant rate. By way of contrast, interactive an... View full abstract»

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  • Computer Security and Networking Protocols: Technical Issues in Military Data Communications Networks

    Publication Year: 1980, Page(s):1472 - 1477
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    Two problems which limit information sharing among computers are fear of compromise of sensitive data (through accidental disclosure or theft), and designing networking protocols which support effective interconnection of heterogeneous systems. These problems are presented in the context of defense systemsapproaches to their solution are discussed-and issues and open questions which must be addres... View full abstract»

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Aims & Scope

IEEE Transactions on Communications focuses on all telecommunications including telephone, telegraphy, facsimile, and point-to-point television by electromagnetic propagation.

 

 

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Naofal Al-Dhahir
University of Texas at Dallas