By Topic

IEEE Transactions on Communications

Issue 6 • Date June 1977

Filter Results

Displaying Results 1 - 12 of 12
  • [Front cover and table of contents]

    Publication Year: 1977, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (146 KB)
    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1977, Page(s): 0
    Request permission for commercial reuse | PDF file iconPDF (320 KB)
    Freely Available from IEEE
  • Communications Processor System Study

    Publication Year: 1977, Page(s):604 - 608
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The activities and results of the Communications Processor System (CPS) study, performed at both North Electric Company and Data System Analysts, Inc., under the auspices of Rome Air Development Center (RADC), are described in this paper. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 400 Mbit/s Digital Repeater Circuitry Provided by a New Design Method and Beam Lead GHz Transistors

    Publication Year: 1977, Page(s):595 - 601
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    A stable, compact, and high-performance regenerative repeater circuitry, suitable for digital transmission systems up to several hundred Mbit/s, has been provided through utilization of new devices, such as 7 GHz beam lead shielded junction transistors, and through a new computer-aided design method, and has been successfully applied to the 400 Mbit/s experimental coaxial cable PCM system. Major f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Effects of Bandpass Limiters on n-Phase Tracking Systems

    Publication Year: 1977, Page(s):569 - 576
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    The combination of a bandpass limiter and an nthpower tracking loop is considered. It is shown that the performance of the combination does not depend on the form of the nonlinear function used to create the nthharmonic signal as long as some energy in that zone is produced. Furthermore, the order in which the limiter and ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New Phase Modulator

    Publication Year: 1977, Page(s):602 - 604
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A phase modulator is described which deviates from perfect linearity by ± 1 degree maximum in the range± 90 degrees. It can be adjusted to eliminate third order distortion. A digital application is illustrated. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Autocorrelation Function of the Output of an N-Level Quantizer with an Angle-Modulated Input Signal

    Publication Year: 1977, Page(s):621 - 627
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    A readily computable formula is given for the autocorrelation function of the output of an arbitrary time-invariant nonlinearity with an arbitrary angle-modulated input. The general result is specialized to the case of an odd-symmetric, but otherwise arbitrary, quantizer. It is shown that to evaluate the output autocorrelation the second-order characteristic function (SOCF) of the modulation is re... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Photoelectron Counter Dead Time Effects on Direct Detection Optical Communication Systems

    Publication Year: 1977, Page(s):615 - 621
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    The effects of photon counter dead time on a direct detection binary pulse position modulation optical communication system are computed for both a free space optical channel and an atmospheric channel subject to clear air turbulence. The degradation in the performance of an optimum receiver structure due to dead time losses was found to be typically 1 dB for the free space channel and less than 1... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design and Performance of a Digital Multifrequency Receiver

    Publication Year: 1977, Page(s):608 - 615
    Cited by:  Papers (9)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    An experimental multifrequency receiver for recognition of digitally encoded multifrequency signaling was designed, constructed and tested. The receiver is based on a quadrature detection technique that consists of digital demodulation followed by second-order, lowpass digital filtering. The post filtering processing produces an estimate of the amplitude of each of the six multifrequency tones and... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Echo Canceler with Two Echo Path Models

    Publication Year: 1977, Page(s):589 - 595
    Cited by:  Papers (65)  |  Patents (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    An adaptive echo canceler with two echo path models is proposed to overcome the false adaptation problem for double-talking. The echo canceler possesses two separate echo path models (EPMs), one (background EPM) for adaptively identifying echo path transfer characteristics and the other (foreground EPM) for synthesizing an echo replica to cancel out echo. The parameter values of the foreground EPM... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of a C-Message Weight Digital Filter

    Publication Year: 1977, Page(s):628 - 630
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    This note describes an 8.0 kHz sampling rate discrete implementation of the C-message weight filtering characteristic. Included for this filter are the filter coefficients for an eight-bit realization and a tabulation and graph of the frequency response. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Theory of Impulse Noise in Telephone Networks

    Publication Year: 1977, Page(s):577 - 588
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1344 KB)

    This paper presents a physical theory of impulse noise in telephone networks based on the assumption that impulsive disturbances can reverberate through a network for very long periods of time. A mechanism of regeneration and propagation of disturbances through signaling circuits is proposed, and the resulting reverberation is modeled as a random walk in one dimension. Theoretical results agree su... 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