IEEE Transactions on Communications

Issue 1 • January 1973

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

    Publication Year: 1973, Page(s): 0
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    Freely Available from IEEE
  • A Queueing Model for Radio Nets - Part I: Methodology

    Publication Year: 1973, Page(s):6 - 13
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (774 KB)

    In voice radio communication nets, digital-frequency assignment patterns and multiple-access discrete address transceivers are being studied to improve grade of service, mean access delay, and other aspects of system performance. An analytical methodology based on a calling system-outer system queueing model is presented. This model permits study of these radio communication problems and system de... View full abstract»

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  • A Queueing Model for Radio Nets - Part II: Results

    Publication Year: 1973, Page(s):14 - 22
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (673 KB)

    In Part I of this paper an analytical methodology for quantitatively evaluating radio-communication nets was introduced and the details of the model and mathematics were explained. In this part of the paper the application of the methodology is quantitatively discussed. Results for particular net situations are presented. They are performance of single nets with multiple frequencies, nets with mut... View full abstract»

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  • Sequential M-ary PAM System

    Publication Year: 1973, Page(s):22 - 33
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (929 KB)

    This paper examines the followingM-level pulse-amplitude modulation (PAM) sequential communication system. Given that one of theMsignals is repetitively sent over an additive Gaussian channel during successive intervals of time, what is the optimum sequential procedure to follow at the receiver in order to pick the correct signal with a probability of wrong selection no great... View full abstract»

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  • New Touch Actuator Based on the Foil-Electret Principle

    Publication Year: 1973, Page(s):61 - 65
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (509 KB)

    A new touch actuator is described that consists of a single metalized foil electret, a number of independent metal backplate sections aligned with the holes of a front cover, and air gaps separating electret and backplate sections. The metal layer of the foil forms a transducer with capacitance Cawith each backplate section. The actuator is operated by touching the foil electret through... View full abstract»

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  • Visual Displays Using Pseudorandom Dot Scan

    Publication Year: 1973, Page(s):65 - 75
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2224 KB)

    Pseudorandom dot scan yields a visually tolerable smallarea flicker for low frame rate television as compared to the large-area flicker of a conventional scanning sequence. With a short-persistence phosphor, one can use 12 frames/s. With a long persistence (such as a P38), one can display 3 frames/s. The "drift illusion factors" of various scanning systems are calculated. Ifnsquare-wave... View full abstract»

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  • [Back cover]

    Publication Year: 1973, Page(s): 0
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    Freely Available from IEEE
  • On Optimum Sampled-Data FM Demodulation

    Publication Year: 1973, Page(s):40 - 50
    Cited by:  Papers (20)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (792 KB)

    Since the introduction of large-scale integration (LSI) techniques, there has been a continuing effort to develop digitalization techniques for communication equipment amenable to LSI implementation. Hopefully, this will permit expanded capability in the equipment while taking advantage of the cost reliability attributed of LSI. In this paper, a digitalized or sampled-data FM demodulator recursive... View full abstract»

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  • Digital Transmission Performance on Fading Dispersive Diversity Channels

    Publication Year: 1973, Page(s):33 - 39
    Cited by:  Papers (28)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (696 KB)

    The reception and detection of a single digit under known channel conditions are investigated. The probability of error for an optimum one-shot receiver instantaneously matched to the channel state is averaged over an ensemble of dispersive diversity channels. The average probability of error as a function of energy to noise ratio is found to be solely dependent on the ratio of rms dispersion widt... View full abstract»

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  • The Effect of a Bandpass Nonlinearity on Signal Detectability

    Publication Year: 1973, Page(s):51 - 60
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (760 KB)

    When an angle-modulated signal plus noise constitute the input to a bandpass device exhibiting a nonlinear input-output power characteristic and AM to PM conversion, the noise component of the output has altered first- and second-order statistics. A method of evaluating the two-dimensional first-order statistics of this noise is presented. The effect on signal detectability of a nonlinearity inser... View full abstract»

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  • Quasi-Optimum Digital Phase-Locked Loops

    Publication Year: 1973, Page(s):75 - 82
    Cited by:  Papers (41)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (616 KB)

    Quasi-optimum digital phase-locked loops (DPLL) are derived utilizing nonlinear estimation theory. Nonlinear approximations are employed to yield realizable loop structures. Baseband equivalent loop gains are derived, which, under high signal-to-noise ratio conditions may be calculated off line. Additional simplifications are made that permit the application of the Kalman filter algorithms to dete... View full abstract»

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  • Effect of the Change in Mean Holding Time Associated With an Equipment Irregularity on Network Trouble Detection and Customer Service

    Publication Year: 1973, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (568 KB)

    This paper describes a study of a mathematical model of the impact of an equipment irregularity on trouble detection and the quality of customer service in a telephone network. The essence of the model is that the holding time of any piece of equipment may be altered if it develops a fault. Customer service is shown to be less sensitive to increases in holding time than decreases. Trunk and some t... View full abstract»

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  • An Introduction to Error-Correcting Codes

    Publication Year: 1973, Page(s):83 - 84
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (176 KB)

    First Page of the Article
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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