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IEEE Transactions on Communications

Issue 9  Part 1 • Date 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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  • 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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  • [Back cover]

    Publication Year: 1980, Page(s): 0
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    Freely Available from IEEE
  • Performance Analysis of a Majority Logic Multiplex System

    Publication Year: 1980, Page(s):1675 - 1680
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    The code division multiplexing (CDM) of digitally modulated baseband signals is normally referred to as majority logic multiplexing (MLM). The employment of MLM techniques in spread spectrum multiple access (SSMA) systems is especially attractive because it allows many different types of baseband channels to be easily combined. The traffic level can be gradually reduced to obtain a desired increas... 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 (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The effects of the n th 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 illus... 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 (43)  |  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
    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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  • A Useful Tool in the Theory of Priority Queueing

    Publication Year: 1980, Page(s):1757 - 1762
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    A double input channel priority network, consisting of a low-priority queue with general interarrival distribution and Markovian service time and a high priority completely Markovian queue, is considered. A simple and handy estimate of the mean queue length for the two flows is presented together with its relative effectiveness. The analysis results show that the channel utilization can be improve... View full abstract»

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  • A Total AUTODIN System Architecture

    Publication Year: 1980, Page(s):1467 - 1471
    Cited by:  Papers (1)  |  Patents (82)
    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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  • Prediction of Attenuation by Rain

    Publication Year: 1980, Page(s):1717 - 1733
    Cited by:  Papers (143)  |  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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  • 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 (840 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 ( ... View full abstract»

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  • Three Typical Blocking Aspects of Access Area Teletraffic

    Publication Year: 1980, Page(s):1662 - 1667
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    In this paper, an effort is made to represent the military access area grade of service (i.e., probability of blocking) in a more realistic way than before. The circuit switching process is structured into three representative contention phases. The three phases are analytically tractable and are rather typical in existing military networks. All three phases apparently have service properties not ... View full abstract»

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  • Optimum Deployment of Communications Relays in an Interference Environment

    Publication Year: 1980, Page(s):1608 - 1615
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    The use of communications relays is examined as a means of improving the operation of line-sight-links in an interference or jamming environment. Expressions are derived that define optimum relay locations and the number of relays. These relationships are functions of the system and interference parameters, as well as of the link and interference source geometry. Bounds on flight path orbits of ai... View full abstract»

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  • Navy Communications Overview

    Publication Year: 1980, Page(s):1573 - 1579
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    The history of communications in the Navy has shown the importance of the role it plays in conducting military operations. A general overview of Navy communications is discussed, providing the framework for the new developments for the 1980's. Discussion focuses on three major areas: strategic, long-haul two-way, and tactical communications. 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 (3)
    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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  • An Adaptive Retransmission Technique for Use in a Slotted-ALOHA Channel

    Publication Year: 1980, Page(s):1776 - 1778
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    An algorithm for adaptive retransmission in a slottedALOHA communication channel has been designed and implemented. This algorithm maintains the stability of the slotted-ALOHA channel under a wide variety of conditions and provides improvements in the response time of the channel. Simulation was used to test the algorithm for steady-state and impulse response. The algorithm was compared to a binar... View full abstract»

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  • Error Performance Measurements on an Experimental 12/14 GHz Satellite Link

    Publication Year: 1980, Page(s):1779 - 1784
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    This correspondence presents results related to measurmg the error performance of an experimental 12/14 GHz satellite link established between Carleton University, Ottawa, Canada, and NASA Ames Research Center, California, in 1976-1977. The measurements were performed on a 9.6 kbit/s voiceband data channel which supported the continuous synchronous transmission of fixed length frames (composite pa... View full abstract»

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  • Military Message Systems: Current Status and Future Directions

    Publication Year: 1980, Page(s):1645 - 1654
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1288 KB)

    The need for timely message delivery coupled with decreasing computer costs is causing message handling in the Department of Defense to be increasingly automated. This paper describes the functional, security, and performance requirements of automated military message systems. In light of these requirements, four operational message systems are compared and contrasted. A summary of results is pres... View full abstract»

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  • 120-Channel Transmultiplexer Design and Performance

    Publication Year: 1980, Page(s):1709 - 1717
    Cited by:  Papers (10)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    A 120-channel transmultiplexer has been developed which interfaces two FDM basic supergroup signals (2 x 60 channels) directly to the digital time division switch or digital transmission systems. The equiplnent exploits a block processing digital SSB-FDM multiplex/demultiplex scheme, and has been built using newly developed high-speed CMOS pipeline multipliers and variable length shift registers. ... View full abstract»

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  • NATO Communications in Transition

    Publication Year: 1980, Page(s):1524 - 1539
    Cited by:  Papers (1)
    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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  • Future Air Force Tactical Communications

    Publication Year: 1980, Page(s):1551 - 1572
    Cited by:  Papers (11)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2600 KB)

    During the 1980's, many improvements will be made in the Air Force's ability to communicate in a battlefield environment. Programs like JTIDS, SEEK TALK, TRI-TAC, and the Ground Mobile Forces satellite communications terminals will improve the security, jam resistance, connectivity, and capacity of today's Air Force tactical communications. Even after these programs have been implemented, however,... View full abstract»

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  • Capacity Allocation and Reservation in Common-User Satellite Communications Systems with a Reconfigurable Multiple-Beam Antenna and a Nonlinear Repeater

    Publication Year: 1980, Page(s):1681 - 1692
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1088 KB)

    The use of a flexible transmit multiple-beam antenna (MBA) connected to a nonlinear satellite repeater is investigated as a means of adaptive resource allocation in a common-user communications network comprising different types and deployments of earth terminals. Such a general-purpose network is typically encountered in hybrid systems architectures supporting international command and control fu... View full abstract»

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  • A New Wide-Band System Architecture for Mobile High Frequency Communication Networks

    Publication Year: 1980, Page(s):1580 - 1590
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1240 KB)

    A new wide-band HF communication system architecture for a multiple, mobile terminal network has been proposed and analyzed. This architecture embodies the complete removal of high power switching and tuning and achieves control of unwanted radiation by the use of highly linear power amplifiers and adaptive interference cancellation methods. To provide maximum flexibility in system operation, prov... 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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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