By Topic

IEEE Transactions on Communications

Issue 9  Part 1 • September 1980

Filter Results

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

    Publication Year: 1980, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (327 KB)
    Freely Available from IEEE
  • Preface: Military communications - An overview of the special issue

    Publication Year: 1980, Page(s):1441 - 1444
    Request permission for commercial reuse | PDF file iconPDF (533 KB)
    Freely Available from IEEE
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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 (... View full abstract»

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

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

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • [Back cover]

    Publication Year: 1980, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (391 KB)
    Freely Available from IEEE
  • The Role of Blue/Green Laser Systems in Strategic Submarine Communications

    Publication Year: 1980, Page(s):1602 - 1607
    Cited by:  Papers (17)  |  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»

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

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

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

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Adaptive Retransmission Technique for Use in a Slotted-ALOHA Channel

    Publication Year: 1980, Page(s):1776 - 1778
    Cited by:  Papers (4)
    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»

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

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Prediction of Attenuation by Rain

    Publication Year: 1980, Page(s):1717 - 1733
    Cited by:  Papers (261)  |  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»

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

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

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

    Publication Year: 1980, Page(s):1573 - 1579
    Cited by:  Papers (2)
    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»

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

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integrated Voice/Data Packet Switching Techniques for Future Military Networks

    Publication Year: 1980, Page(s):1655 - 1662
    Cited by:  Papers (9)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    Virtual circuit and pure packet (datagram) based switching techniques are studied for future application to the integrated voice/data telecommunications. The coexistence of voice with both interactive and bulk data in an integrated network suggests the desirability of a mixed switching technique to allow the efficient sharing of both the switching and communications resources. Such a mixed packet ... View full abstract»

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

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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 (4)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimum Deployment of Communications Relays in an Interference Environment

    Publication Year: 1980, Page(s):1608 - 1615
    Cited by:  Papers (8)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Future Air Force Tactical Communications

    Publication Year: 1980, Page(s):1551 - 1572
    Cited by:  Papers (15)  |  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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Two-Level Coarse Code Acquisition Scheme for Spread Spectrum Radio

    Publication Year: 1980, Page(s):1734 - 1742
    Cited by:  Papers (32)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    A scheme for coarse acquisition of spread spectrum signals is described. It is characterized by a two-level acquisition process employing a passive correlator in tandem with a bank of active correlators. A threshold exceedance of the passive correlator initiates an interval of active correlation if any of the active correlators is idle. The scheme combines the rapid search capability of passive co... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Useful Tool in the Theory of Priority Queueing

    Publication Year: 1980, Page(s):1757 - 1762
    Cited by:  Papers (11)
    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»

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

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